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# · 10 terms
A · 40 terms
- A stablecoin peg is a target; its market price is a trade
- Aave aTokens: the receipt for a supplied asset
- Aave category borrowing permissions
- Aave collateral swap how works
- Aave efficiency mode: correlated assets and a narrower risk assumption
- Aave eMode explained
- Aave frozen reserve versus paused reserve
- Aave paused frozen reserve difference
- Aave Umbrella backstop staking risk
- Aave Umbrella slashing and cooldown
- ABI
- Accepting stablecoin payments what a merchant receives
- Accepting stablecoin payments: what a merchant receives
- account abstraction
- add one token to a liquidity pool
- ADL insurance fund crypto meaning
- administrative powers
- Alameda Research
- algo stablecoins
- Algorithmic stablecoins: when the peg depends on incentives
- AMM
- An out-of-range liquidity position: what changes and what remains?
- Anatomy of a Bitcoin block: the header, the coinbase and the weight limit, using block 0
- application binary interface
- approve transaction
- APR
- APR versus APY: how compounding changes a displayed rate
- APY
- Arbitrum Nitro rollup
- Arbitrum Nova and AnyTrust: trading a data assumption for lower costs
- Arbitrum Nova AnyTrust
- Arbitrum One explained
- Arbitrum One versus Nova
- are NFT royalties enforced
- are OP Stack chains identical
- Are stablecoins covered by US bank-deposit insurance?
- Are stablecoins mined Minting and network validation
- Are stablecoins mined? Minting and network validation
- Attestations, audits and proof of reserves answer different questions
- Automated market makers: trading against a programmed inventory
B · 218 terms
- b-money
- backup bitcoin wallet file
- backup bitcoin wallet file explained
- backwards compatible soft fork
- Bad debt socialization: how a lending loss reaches suppliers
- Balancer 80 20 pool price calculation
- Balancer weighted pool 80 20 explained
- banking risk in stablecoins
- base fee burn
- Base network explained
- Base versus Ethereum
- batch token transfer
- Batch-auction swaps: how orders can settle together
- bc1 address
- bc1p address
- bech32
- BFX token
- BIP 101
- BIP 39
- BIP bitcoin
- BIP process
- BIP39
- bit gold
- Bitcoin address reuse: what it reveals
- bitcoin address types
- Bitcoin address types: why some start with 1, some with 3, and some with bc1
- bitcoin all time price chart
- bitcoin batch payments
- bitcoin batch payments explained
- bitcoin block
- bitcoin block 0
- bitcoin block explorer explained
- bitcoin block subsidy
- bitcoin block taking an hour
- bitcoin block taking an hour explained
- bitcoin blockchain
- bitcoin burn address
- Bitcoin Cash 2017
- Bitcoin Cash fork
- Bitcoin Cash hard fork
- Bitcoin Cash: why Bitcoin split on 1 August 2017, and what happened to both sides after
- Bitcoin change addresses: where the rest of a payment goes
- bitcoin circulating supply
- Bitcoin coin selection: which UTXOs a wallet spends
- bitcoin coinjoin explained
- bitcoin coinjoin explained explained
- Bitcoin CoinJoin: collaborative transactions and privacy limits
- bitcoin confirmations
- bitcoin confirmations double spend
- bitcoin confirmations explained
- Bitcoin confirmations: what they mean, why six became the convention, and why none is final
- Bitcoin Core explained: node software, wallet and RPC interface
- bitcoin core RPC security
- bitcoin core RPC security explained
- Bitcoin creator
- bitcoin days destroyed
- bitcoin difficulty
- bitcoin difficulty adjustment
- Bitcoin dust: a relay-policy threshold, not a smallest coin
- bitcoin energy consumption
- bitcoin energy per transaction
- bitcoin explained
- Bitcoin faucet
- Bitcoin fee rates: sat/vB versus the total fee
- bitcoin finality
- bitcoin for beginners
- bitcoin fork
- Bitcoin Foundation chief scientist
- bitcoin full node
- bitcoin genesis block address
- Bitcoin Gold 51% attack
- bitcoin governance
- Bitcoin halving 2024
- Bitcoin halving dates
- Bitcoin halving explained
- bitcoin hash rate
- bitcoin hash rate China
- Bitcoin hash rate: what it measures, why it is only an estimate, and why it matters
- bitcoin hot wallet vs cold wallet
- bitcoin hot wallet vs cold wallet explained
- bitcoin import vs sweep
- bitcoin import vs sweep explained
- Bitcoin Improvement Proposal
- Bitcoin Improvement Proposals: how ideas become Bitcoin, and why a BIP is not a law
- Bitcoin initial synchronization: downloading is only part of the job
- bitcoin invoice expired paid
- bitcoin invoice expired paid explained
- Bitcoin layer 2
- Bitcoin mainnet, testnet, signet and regtest
- bitcoin max supply
- bitcoin mempool
- Bitcoin merchant invoices: paid, expired, short and overpaid
- Bitcoin Merkle proofs: proving inclusion without the full block
- Bitcoin message signatures: proof of control with clear limits
- bitcoin miners
- bitcoin mining hardware ASIC
- bitcoin mining hardware ASIC explained
- Bitcoin mining hardware: hash rate, power and ASIC efficiency
- bitcoin mining pool
- bitcoin mining renewable energy
- Bitcoin multisig: what a two-of-three wallet actually requires
- bitcoin network hashrate estimate
- bitcoin node
- Bitcoin node connection problems: peers, headers and local access
- bitcoin node electrum server
- bitcoin node electrum server explained
- bitcoin node no connections
- bitcoin node no connections explained
- bitcoin node requirements
- bitcoin node sync slow
- bitcoin node sync slow explained
- Bitcoin nodes explained: what a full node does, and why people run one
- bitcoin onchain vs lightning
- bitcoin onchain vs lightning explained
- Bitcoin Ordinals
- Bitcoin paper wallets: what to understand before spending from one
- bitcoin payjoin explained
- bitcoin payjoin explained explained
- Bitcoin Payjoin: a payment built with inputs from both sides
- Bitcoin payment batching: many recipients in one transaction
- Bitcoin payment channels
- Bitcoin payment requests and QR codes: what a scan actually tells you
- Bitcoin Pizza Day
- Bitcoin Pizza Day: the 10,000 BTC pizza order that proved Bitcoin could buy things
- bitcoin Ponzi scheme
- Bitcoin Ponzi schemes and scams: a short history, and how to spot the next one
- bitcoin price 2010
- bitcoin price 2013
- bitcoin price 2017
- bitcoin price 2021
- bitcoin price by year
- bitcoin price history
- Bitcoin price history, year by year: 2010 to 2025 from one sourced dataset
- bitcoin privacy
- bitcoin proof of work
- bitcoin pseudonymous
- bitcoin QR code payment
- bitcoin QR code payment explained
- Bitcoin received but missing from your wallet: what to check
- bitcoin received not showing
- bitcoin received not showing explained
- bitcoin refund
- bitcoin refund explained
- Bitcoin refunds: why returning a payment requires a new transaction
- bitcoin rejected stale shares
- bitcoin rejected stale shares explained
- Bitcoin reorganizations: when a confirmed transaction changes branch
- bitcoin rescan vs reindex
- bitcoin rescan vs reindex explained
- Bitcoin RPC security: why a node API needs restricted access
- Bitcoin Savings and Trust
- bitcoin scams history
- bitcoin send max
- bitcoin send max explained
- bitcoin sign message proof ownership
- bitcoin sign message proof ownership explained
- Bitcoin SV split
- bitcoin testnet signet regtest
- bitcoin testnet signet regtest explained
- Bitcoin timelocks: absolute dates and relative waiting periods
- bitcoin transaction fees
- Bitcoin transaction fees and the mempool: how fees are set and why they spike
- Bitcoin transaction ID versus wallet address
- bitcoin transaction id vs address
- bitcoin transaction id vs address explained
- bitcoin transaction inputs and outputs
- bitcoin units
- bitcoin utxo explained
- Bitcoin virtual size: bytes, weight and vbytes
- Bitcoin vs Bitcoin Cash
- bitcoin wallet
- bitcoin wallet backup
- bitcoin wallet gap limit
- bitcoin wallet gap limit explained
- Bitcoin wallet gap limits: why an address can be missed during recovery
- Bitcoin wallet rescan versus node reindex
- Bitcoin wallet-file backups: what a seed may not preserve
- Bitcoin wallets explained: hot, cold, hardware, custodial, and what they actually store
- bitcoin white paper explained
- bitcoin whitepaper summary
- bitcoin withdrawal fee network fee
- bitcoin withdrawal fee network fee explained
- Bitcoin withdrawal fees versus network fees
- bitcoin.pdf
- BitConnect
- Bitfinex 120000 bitcoin
- Bitfinex hack 2016
- Bitfinex hack seizure 2022
- Bitfinex stolen bitcoin recovered
- blob
- Blob fees: a separate fee market for rollup data
- block 170
- block header
- block reward
- block weight
- blockchain analysis clustering
- Blockchain bridges: verifying an event across separate systems
- blockchain explained
- Blockchain oracles: getting observations into contract decisions
- blockchain reorg
- blockchain vs bitcoin
- BOLT 12 offers: reusable Lightning requests and fresh invoices
- bolt12 offers lightning
- bolt12 offers lightning explained
- Borrow caps: limiting debt without guaranteeing liquidity
- Borrowed governance power: what snapshots can and cannot prevent
- brainwallet vs seed phrase
- brainwallet vs seed phrase explained
- Brainwallets versus seed phrases: why a memorable sentence is different
- BRC-20 tokens fees
- bridged stablecoins
- broadcast bitcoin transaction
- broadcast bitcoin transaction explained
- Broadcasting a signed Bitcoin transaction: what acceptance proves
- Bug bounties and audits: different security evidence and incentives
- bug bounty vs smart contract audit
- burn NFT meaning
- Burning an NFT: which record disappears and what can remain?
C · 87 terms
- calculate a perpetual funding payment
- calculate DAO cash runway
- call and put option payoff examples
- Calldata: the bytes sent to an Ethereum contract
- Cambridge Bitcoin Electricity Consumption Index
- Cambridge bitcoin mining map
- can a spot perpetual hedge lose money
- can bitcoin be frozen
- can bitcoin be frozen explained
- Can Bitcoin be frozen? Keys, custodians and miner censorship
- can bitcoin be hacked
- can bitcoin be traced
- can borrowed tokens influence governance
- Casey Rodarmor ord
- Cash-backed stablecoins: what sits behind the token?
- Casper FFG
- CCTP
- Chain IDs: why the same address can exist on different networks
- Chancellor on brink of second bailout for banks
- change collateral without closing borrowing
- change output bitcoin
- check bitcoin address valid
- check bitcoin address valid explained
- Checking a Bitcoin address: format, network and recipient
- Checking Bitcoin wallet downloads and software signatures
- Child pays for parent: how a second transaction can lift the first
- China bitcoin mining ban
- China crypto ban 2021
- China’s 2021 Bitcoin mining ban: what happened, and where the miners went
- Circle CCTP: moving native USDC by burning and minting
- claim Uniswap v3 trading fees
- Coin control: choosing which bitcoin to spend
- Coinbase maturity: why newly mined bitcoin must wait
- coinbase transaction
- CoinJoin
- Collateral and health factors: measuring a loan against its limits
- Collateral looping: gross exposure hidden inside repeated deposits
- collateral ratio
- Collateral swaps: replacing backing while keeping a loan open
- collateralized stablecoins
- Collecting LP fees: claiming earnings versus increasing a position
- compare Ethereum layer 2 networks
- Comparing Ethereum layer 2s: the questions behind a cheap transfer
- composable finance
- compounding validator
- Concentrated liquidity: providing inventory inside a price range
- connect wallet
- Connecting a wallet: account access, signatures and approvals
- consensus client
- Constant-product pools: deriving the output from x times y
- Contract ABIs: the interface used to encode calls
- contract account
- Contract proxies: one address, replaceable implementation
- COPA v Wright
- cost of switching a DeFi debt asset
- counterfeit stablecoins
- CoW batch auction explained
- CPFP
- Craig Wright and the COPA ruling: what the High Court found, in its own words
- Craig Wright contempt
- Craig Wright not Satoshi
- Craig Wright ruling
- Craig Wright Satoshi
- CREATE2: predictable contract addresses and their limits
- Cross and isolated margin: which collateral supports a position?
- cross margin vs isolated margin crypto
- cross-chain bridge
- cross-pool arbitrage
- crypto anarchist manifesto
- crypto call put option explained
- Crypto calls and puts: a right, a premium and a payoff
- crypto giveaway scam
- crypto inverse linear options settlement
- Crypto Open Patent Alliance
- crypto options implied volatility meaning
- crypto swap intent solver explained
- crypto take profit order execution
- Crypto-backed stablecoins: debt, collateral and liquidation
- crypto-collateralized stablecoins
- Curve StableSwap amplification explained
- Custodial and self-custodial Lightning wallets
- custodial lightning wallet
- custodial lightning wallet explained
- custodial wallet
- cypherpunk manifesto
- cypherpunks
- cypherpunks mailing list
D · 66 terms
- Dai and Sky
- DAI and USDS: connected tokens in the Sky system
- DAI versus USDS
- DAO quorum proposal threshold difference
- DAO treasury runway own token liquidity
- DAO treasury runway: separating a token valuation from spendable funds
- DAOs: how a group makes and executes shared decisions
- data availability
- David Chaum blind signatures
- decentralised autonomous organisation
- decentralised exchange
- decentralised finance
- Decentralized exchanges: how a token trade reaches settlement
- DeFi
- DeFi arbitrage: why prices converge and differences can remain
- DeFi audit
- DeFi bad debt lenders loss
- DeFi composability: reusing capabilities and inheriting dependencies
- DeFi cover insurance exclusions claim
- DeFi cover: covered events, exclusions and the claims process
- DeFi debt refinancing: changing a debt asset or lending market
- DeFi debt swap refinance loan
- DeFi hacks
- DeFi lending pools: supply claims, debt and available liquidity
- DeFi liquidations: exchanging debt repayment for collateral
- DeFi liquidity versus solvency
- DeFi pool
- deflationary Ethereum
- Delegatecall: whose code runs, and whose storage changes?
- depegging
- DEX
- DEX swap costs: separating pool fees, gas and interface charges
- DEX trading fee versus gas fee
- difficulty retarget
- disable Aave collateral with active debt
- disable collateral Aave meaning
- disconnect wallet
- disconnect WalletConnect session
- distributed ledger
- distributed validator technology
- Distributed validators: how several machines share Ethereum signing
- divergence loss
- do Uniswap fees compound automatically
- Documented DeFi exploits: separating mechanism, scope and outcome
- does a bug bounty mean a protocol is safe
- does a Snapshot vote move treasury funds
- does DeFi collateral earn interest
- does DeFi cover pay for every exploit
- does funding count as realized profit
- does out of range liquidity earn fees
- does removing liquidity sell my tokens
- does RPC see wallet address
- Does supplied collateral earn interest? Read the market accounting
- does supplied collateral earn lending interest
- Dorian Nakamoto
- dormant bitcoin addresses
- dormant bitcoin whale
- Dormant bitcoin whales: what it means when old coins wake up after a decade
- double signing
- double spend bitcoin
- double spend problem
- double spending
- Double spending: the problem Bitcoin was built to solve, and how it solves it
- Dread Pirate Roberts
- Dutch-auction swap orders: a price that changes until someone fills
- DVT Ethereum staking
E · 113 terms
- early bitcoin mining
- EH/s
- EIA bitcoin mining electricity
- EIP proposed versus activated
- EIP-4844
- EIP-7702
- ENS address record wrong network
- ENS address records: one name, different destinations
- ENS lookalike names
- ENS lookalike names and normalization: checking what you resolve
- ENS multiple addresses
- ENS name expired
- ENS name normalization
- ENS owner manager difference
- ENS owner, manager and resolver: who controls which settings?
- ENS primary names: showing a name for your wallet address
- ENS registration commit reveal
- ENS renewal and expiry: what happens when a .eth name runs out?
- ENS resolver explained
- ENS reverse resolution
- ENS subdomains
- ENS subname parent control
- ENS subnames: what control does a parent name retain?
- EOA
- ERC-1155: many token types and batch transfers in one contract
- ERC-20 tokens: balances, decimals and spending permissions
- ERC-4337
- ERC-4626 vaults: assets, shares and conversion previews
- ERC-721 NFTs: the token, its metadata and what ownership means
- ERC1155
- ERC20
- ERC721
- ETH burn
- ETH meaning
- ETH2
- Ethena dollar
- Ether and Ethereum: the asset, the network and the units
- ether vs Ethereum
- Ethereum access lists: declaring accounts and storage in advance
- Ethereum accounts: keys, contract code and delegated accounts
- Ethereum address checksums: what mixed-case letters can detect
- Ethereum archive node
- Ethereum archive nodes: asking what an account held in the past
- Ethereum blobs and data availability
- Ethereum block time slots
- Ethereum blockchain
- Ethereum chain reorg
- Ethereum checkpoints and weak subjectivity: starting from recent history
- Ethereum Classic 51% attack
- Ethereum client diversity
- Ethereum client diversity: why software choice affects shared risk
- Ethereum derivation path
- Ethereum derivation paths: why one seed can show different accounts
- Ethereum epoch
- Ethereum execution consensus layers
- Ethereum explained
- Ethereum explorer
- Ethereum finality
- Ethereum gas fees: units, prices and the amount actually paid
- Ethereum hardware wallet signing
- Ethereum layer 2: execution elsewhere, settlement on Ethereum
- Ethereum light client
- Ethereum light clients: checking headers without executing every block
- Ethereum mainnet and testnets: separate networks for separate purposes
- Ethereum mainnet testnet difference
- Ethereum Merge
- Ethereum missed slot
- Ethereum Name Service explained
- Ethereum network upgrades process
- Ethereum node
- Ethereum node syncing
- Ethereum nodes and RPC: how wallets see the chain
- Ethereum nonce
- Ethereum penalties
- Ethereum proof of stake: blocks, votes and checkpoint finality
- Ethereum proof of work end
- Ethereum receipts: status, gas used and event logs
- Ethereum removed transaction logs
- Ethereum reorganizations: when a recent block leaves the chosen chain
- Ethereum rollup
- Ethereum RPC privacy
- Ethereum slashing protection database
- Ethereum slashing: conflicting signatures, penalties and downtime
- Ethereum slots and missed blocks: why a slot can have no block
- Ethereum snap checkpoint sync
- Ethereum staking and withdrawals: balances, duties and queues
- Ethereum staking as a service
- Ethereum staking deposit contract
- Ethereum staking deposits: checking the contract and deposit data
- Ethereum staking pool explained
- Ethereum staking rewards source
- Ethereum state and storage: what contracts remember
- Ethereum sync committee
- Ethereum transaction cost
- Ethereum transaction hashes: an identifier, not proof of success
- Ethereum transactions and nonces: how requests stay in order
- Ethereum validator activation queue
- Ethereum validator activation: from deposit to active duties
- Ethereum validator offline
- Ethereum virtual computer
- Ethereum wallet disconnected error
- Ethereum weak subjectivity
- Ethereum withdrawal credentials
- EURC
- euro stablecoins
- EVM
- EVM compatible
- Exact-input and exact-output swaps: which amount is fixed?
- execution client
- extended public key
- Extended public keys: useful backups with privacy consequences
- externally owned account
- extranonce pattern
F · 27 terms
- fake MetaMask website
- Fake wallet websites: how phishing reaches a real Ethereum account
- fault proofs
- FDV
- fee bump
- Fee-on-transfer tokens: when the received amount is smaller
- fiat-backed stablecoins
- find the correct Uniswap pool address
- Finding the correct stablecoin contract for a network
- Finney attack
- first bitcoin block
- first bitcoin purchase
- first bitcoin transaction
- Fixed and variable DeFi borrowing: which risk does a fixed rate remove?
- fixed maturity debt versus changing borrowing rates
- fixed rate vs variable rate DeFi loans
- flash loan governance voting attack
- Flash loans: borrowing that must settle inside one transaction
- forgot MetaMask password
- fraud proofs
- free bitcoin 2010
- FTX bankruptcy
- FTX collapse
- FTX customer funds
- fully diluted valuation
- Function selectors: the first four bytes of a contract call
- fungible token
G · 19 terms
- GameKyuubi
- gas limit
- gas price
- Gasper
- Gavin Andresen
- Gavin Andresen and the Bitcoin faucet: free coins, and the developer Satoshi handed Bitcoin to
- Gavin Andresen Craig Wright
- Gavin Andresen Satoshi
- genesis block
- genesis block 50 BTC unspendable
- genesis block explained
- get test ETH faucet
- GHash.io 51%
- Governance delegation: voting power without transferring the tokens
- Governance quorum and proposal thresholds: two different gates
- Governance timelocks: a delay, not an automatic veto
- Governance tokens: voting authority, delegation and its limits
- gwei
- gwei fee
H · 63 terms
- Hal Finney
- Hal Finney Alcor
- Hal Finney ALS
- Hal Finney Satoshi
- Hal Finney: early Bitcoin, RPOW and the first test payment
- hard fork
- hardware wallet
- hardware wallet blind signing
- Hardware wallets for Ethereum: what the device protects
- Hardware wallets: what the device protects and what it cannot check
- hash rate and security
- hashcash
- hashrate
- historical Ethereum balance
- hodl meaning
- hodl origin
- hodl vs hold
- hold on for dear life
- hot wallet vs cold wallet
- Hot wallets versus cold wallets: compare signing and recovery paths
- how are bitcoins created
- How Bitcoin mining pools work: shares, payouts and the pool that started it in 2010
- how bitcoin mining works
- How Bitcoin mining works: the job, the reward and the race
- how bitcoin transactions work
- how do CoW batches match trades
- how does a UniswapX Dutch auction work
- how does bitcoin difficulty work
- how does bitcoin work
- how does blockchain work
- how does proof of work work
- how does StableSwap amplification work
- How Ethereum upgrades: proposals, client releases and activation
- how hardware wallets work
- how hardware wallets work explained
- how lending losses reduce vault shares
- how many bitcoin nodes are there
- how many bitcoins are lost
- How many bitcoins are lost forever? What the estimates can and cannot tell you
- how many bitcoins are there
- How many bitcoins are there? The 21 million cap, explained
- how many bitcoins does Satoshi have
- how many confirmations bitcoin
- how many satoshis in a bitcoin
- how mining pools work
- how much electricity does bitcoin use
- How much energy does Bitcoin use? How it is measured, and what actually drives it
- how much LP fees cover impermanent loss
- how perpetual funding payments calculated
- how repay Aave loan full amount
- How stablecoin cross-border payments work
- How stablecoin refunds work
- how to fully repay an Aave debt
- How to identify counterfeit stablecoin tokens
- how to read a block explorer
- How to read a block explorer: transactions, fees, confirmations and addresses
- How to read a stablecoin reserve report
- How to read an Ethereum block explorer
- How to receive Bitcoin: addresses, amounts and arrival checks
- How to send Bitcoin: review the destination, amount and fee
- how to spot a crypto scam
- how vault fee shares dilute ownership
- HTLC
I · 25 terms
- I am hodling
- Identifying a DEX pool: token pair, network, fee and contract
- Ilya Lichtenstein Heather Morgan
- Impermanent loss: comparing pool inventory with simply holding
- implied volatility versus historical volatility
- Implied volatility: what an option price says, and what it does not
- import custom token wallet
- Importing versus sweeping Bitcoin private keys
- Incentives and earned fees: identifying where a yield comes from
- Individual X bitcoin
- Initial and maintenance margin: opening a position versus keeping it
- initial maintenance margin difference
- Insufficient DEX liquidity: no route, poor quote or unavailable inventory?
- insufficient funds for gas value
- insufficient liquidity for this trade
- Intent-based swaps: authorizing an outcome for solvers to execute
- Internal transactions: an explorer label for execution traces
- intrinsic value versus time value
- IOC FOK GTC crypto orders
- IOC versus FOK order
- IPFS pinning NFT image
- is bitcoin anonymous
- Is Bitcoin anonymous? No, it is pseudonymous, and the difference matters
- is Polygon PoS Ethereum layer 2
- Isolated lending markets: which risks are actually separated?
K · 1 terms
L · 54 terms
- L2
- last bitcoin mined 2140
- Laszlo Hanyecz
- layer two
- legacy address
- Lending interest indexes: accruing balances without daily transfers
- Lending liquidity versus solvency: can assets be withdrawn or recovered?
- lending market
- leverage notional margin example
- Leverage, margin and notional: the exposure behind a deposit
- lightning address vs bitcoin address
- lightning address vs bitcoin address explained
- Lightning addresses: an email-like name that requests an invoice
- lightning channel backup recovery
- lightning channel backup recovery explained
- Lightning channel backups: why a seed alone may not be enough
- Lightning channels: balances, commitments and closing
- lightning force close waiting
- lightning force close waiting explained
- Lightning force closes: why funds can take time to return
- Lightning inbound liquidity: why receiving needs capacity
- lightning invoice explained
- lightning invoice explained explained
- Lightning invoices: amount, expiry and payment status
- Lightning Network explained
- Lightning Network how it works
- lightning payment pending failed
- lightning payment pending failed explained
- Lightning payment pending, failed or succeeded: when to retry
- Lightning routing fees: base fees and proportional fees
- lightning submarine swap loop
- lightning submarine swap loop explained
- Lightning submarine swaps: moving between channels and on-chain funds
- lightning watchtower
- lightning watchtower explained
- Lightning watchtowers: monitoring channels while a wallet is offline
- liquid staking token
- Liquid staking: a transferable claim on a staking arrangement
- Liquidation bonuses: who receives the discount?
- liquidation threshold
- Liquidity locks and burned LP tokens: what the claim actually proves
- liquidity mining
- Liquidity pools: shared inventory with different accounting rules
- Liquidity provider positions: what an LP token or NFT represents
- liquidity receipt
- loan liquidation
- locked liquidity burned LP token meaning
- lost bitcoins
- LP break-even fees: when trading revenue covers the holding shortfall
- LP fees versus holding tokens
- LP position
- LST
- LTV
- LTV and liquidation threshold: two different collateral limits
M · 29 terms
- majority attack
- majority consensus client risk
- mark price index price last price
- mark price versus oracle and last trade
- Mark, index and last price: different numbers with different jobs
- Market cap versus fully diluted valuation
- MAST
- Maximal extractable value: the consequences of transaction order
- May 22 2010
- mempool.space how to use
- merkle root
- MetaMask account missing after restore
- MetaMask password and recovery phrase: which one restores access?
- miner extractable value
- minimum output versus maximum input
- mining difficulty drop
- mining explained
- mining pool
- mining pool concentration
- Mining pool payouts: PPS, FPPS and PPLNS
- mining pool shares
- mint price versus gas
- Morpho curator versus allocator permissions
- Morpho vault curator allocator roles
- moved on to other things
- Moving an Ethereum validator safely: slashing-protection records
- Moving stablecoins across chains bridge or exchange
- Moving stablecoins across chains: bridge or exchange?
- multi-token standard
N · 27 terms
- Native, bridged and wrapped stablecoins
- next Bitcoin halving
- NFT approve all meaning
- NFT burn versus dead address
- NFT image missing ownership
- NFT IPFS permanence
- NFT listing signature
- NFT listings and offers: how signatures become marketplace trades
- NFT metadata: where the name, image and attributes live
- NFT minting explained
- NFT not showing wallet
- NFT offer cancellation
- NFT operator approvals: what does “approve all” allow?
- NFT ownership
- NFT royalties ERC2981
- NFT royalties: what ERC-2981 specifies and what it does not enforce
- NFT safe transfer failed
- NFTs and IPFS: a content address is not a storage guarantee
- Nick Szabo Satoshi
- non-custodial wallet
- Non-dollar stablecoins: stable against which currency?
- non-fungible token
- non-USD stablecoins
- nonce
- not enough liquidity to swap token
- not your keys not your coins
- notional divided by margin explained
O · 30 terms
- Off-chain votes and on-chain execution: following the authority chain
- Offline Bitcoin signing: build, inspect, sign and broadcast
- old bitcoin wallet moves
- On-chain Bitcoin versus Lightning: choose the correct payment route
- On-chain limit orders: price conditions and execution dependencies
- onchain money-market funds
- onchain program
- one-transaction loan
- OneCoin
- OP Mainnet explained
- OP Stack and the Superchain: shared software versus shared guarantees
- OP Stack Superchain explained
- Open interest versus volume: outstanding contracts and completed trades
- open interest vs trading volume
- Optimism network OP Stack
- Optimism withdrawal prove finalize
- Optimistic rollups: state claims, challenges and withdrawal waits
- option premium intrinsic time value crypto
- Option premiums: intrinsic value, time value and the break-even price
- Option settlement currency: why a dollar payoff can become a token amount
- Oracle heartbeats and deviation thresholds: when prices update
- order book depth bid ask spread
- order book spread and average fill price
- Order time in force: GTC, IOC and fill-or-kill
- Order-book depth and spread: reading the liquidity behind a quote
- Ordinals and inscriptions: how images and text ended up inside Bitcoin blocks
- Ordinals inscriptions explained
- Ordinals spam debate
- Output descriptors: describing what a Bitcoin wallet can find
- outstanding futures contracts versus turnover
P · 54 terms
- P2SH address starts with 3
- partially signed transaction
- password versus seed phrase
- Patoshi pattern
- pay per share
- Paymasters: who pays for a smart-account operation?
- PayPal USD
- PBOC crypto notice September 2021
- peer-to-peer electronic cash
- peer-to-peer electronic cash system
- peg versus price
- pending ETH transaction
- Pending Ethereum transactions: what the wallet is waiting for
- Pendle PT accounting asset and maturity
- Pendle PT YT explained
- Permit signatures: authorizing token spending without an approval transaction
- perpetual contracts versus owning spot tokens
- Perpetual funding payments: who pays whom, and on what amount?
- Perpetual futures: price exposure without owning the underlying token
- Perpetual insurance funds and auto-deleveraging: allocating a shortfall
- PlusToken scam
- Polygon PoS versus a rollup: different security and bridge assumptions
- Polygon PoS versus rollup
- Pooled Ethereum staking: sharing a validator and adding dependencies
- Poon Dryja paper
- PoR
- post only order rejected
- Post-only orders: requiring a maker order instead of an immediate fill
- PoW
- PPS FPPS PPLNS bitcoin
- PPS FPPS PPLNS bitcoin explained
- prevent a closing order from reversing a position
- price oracle
- primary-market stablecoins
- Principal and yield tokens: separating a yield-bearing claim
- private key
- Private keys, public keys and seed phrases: what actually controls your bitcoin
- Private transaction submission: hiding an order from which audience?
- Projected and realized yield: measuring what actually happened
- proof of stablecoin backing
- proof of work explained
- Proof of work, explained without the math: why Bitcoin runs on a lottery
- proposal threshold versus quorum
- proto-danksharding
- Protocol backstop staking: rewards paid for absorbing a defined loss
- protocol incidents
- Protocol pauses and reserve freezes: which actions still work?
- Protocol upgrades and admin powers: who can change what
- Pruned Bitcoin nodes: full validation with less historical storage
- pruned node
- PSBT
- PSBT: passing a Bitcoin transaction between signers
- public key
- PYUSD
R · 51 terms
- race attack
- random NFT in wallet
- range liquidity
- Razzlekhan
- RBF
- Reading Ethereum wallet requests: connection, signing and calls
- Realized and unrealized trading P&L: what changed in the account?
- realized unrealized PnL perpetual futures
- Rebasing tokens: balances can change without a transfer
- receive bitcoin
- receive bitcoin explained
- Reconciling stablecoin payments with invoices
- recovery phrase
- recursive borrowing balance sheet
- recursive borrowing collateral looping
- reduce only order meaning
- Reduce-only orders: closing exposure without reversing it
- register eth name
- Registering an ENS name: why registration has separate steps
- Rejected and stale mining shares: reading a pool dashboard
- Removing liquidity versus selling tokens: different exit actions
- renew eth domain
- repay Aave with collateral explained
- Repaying a DeFi loan: debt asset, accrued interest and the final balance
- Repaying with collateral: the swap inside the repayment
- replace-by-fee
- Replace-by-fee: replacing a pending Bitcoin payment
- reserve attestations
- Reserve maturity: why cash and a Treasury bill are different
- reserve-backed stablecoins
- Restaking: additional services and additional slashing conditions
- restore imported wallet accounts
- Reverted Ethereum transactions: failed execution and paid gas
- revoke approval
- revoke NFT operator approval
- reward emissions
- rollup challenge period
- rollup operator
- rollup security differences
- Rollup sequencers: who puts transactions in order?
- rollup withdrawal pending
- Ross Ulbricht
- Ross Ulbricht pardon
- RPC endpoint
- RPOW
- rug pull fraud versus contract vulnerability
- rug pull versus smart contract exploit
- Rug pulls and protocol exploits: different mechanisms behind a loss
- run a bitcoin node
- run Ethereum validator at home
- Running bitcoin tweet
S · 162 terms
- Sam Bankman-Fried
- same seed different Ethereum address
- same token pair different liquidity pools
- Sandwich attacks: trading around someone else’s swap
- sat per vbyte
- sat/vB
- Satoshi alert key
- Satoshi bitcoins lost
- satoshi era wallet
- Satoshi hornet’s nest
- Satoshi last email
- Satoshi last message
- Satoshi Nakamoto bitcoins
- Satoshi Nakamoto disappearance
- Satoshi Nakamoto identity
- Satoshi Nakamoto paper
- Satoshi Nakamoto white paper
- Satoshi Nakamoto WikiLeaks
- Satoshi Nakamoto’s disappearance: the last posts, the last emails and the handover
- Satoshi successor
- satoshi to bitcoin
- sats
- Savings USDS
- SBF sentence
- Schnorr signatures
- seed phrase
- Segregated reserves: what separation can and cannot establish
- Segregated Witness
- SegWit activation 2017
- segwit address
- SegWit explained
- SegWit explained: what Segregated Witness changed in Bitcoin, and how it activated in 2017
- sell supplied collateral to repay a loan
- send bitcoin
- send bitcoin explained
- send maximum ETH balance
- send NFT to smart contract
- Sending all your bitcoin: why Send Max differs from the displayed balance
- Sending an NFT to a contract: why safe transfers can fail
- Sent a stablecoin on the wrong network: what to check
- Sepolia Hoodi testnet
- sequencer
- Sergio Demian Lerner
- set ENS primary name
- shared collateral versus isolated position
- sign bitcoin offline
- sign bitcoin offline explained
- Sign In with Ethereum
- Sign-In with Ethereum: what a wallet login proves
- Signature replay: when the same authorization can be used again
- Silk Road and Ross Ulbricht: the marketplace, the life sentence, and the 2025 pardon
- Silk Road bitcoin
- Silk Road bitcoin traced
- Silk Road FBI seizure 2013
- Silk Road life sentence
- single sided liquidity deposit price impact
- Single-sided liquidity deposits: why adding one token can have a cost
- SIWE wallet login
- six confirmations
- Slippage and price impact: two reasons a swap rate can differ
- slippage versus price impact
- Slush pool
- smallest unit of bitcoin
- Smart accounts: programmable authorization, recovery and gas
- smart contract explained
- smart contract upgrade
- Smart contracts: programmed rules, examples and outside promises
- smart wallet
- Smart-account bundlers: turning user operations into transactions
- Smart-account recovery: replacing access without a seed phrase
- Smart-contract audits: reading the scope, findings and limits
- Smart-contract events: logs, indexed fields and their limits
- Snapshot vote does it execute transaction
- soft confirmation
- soft fork
- soft fork vs hard fork
- Soft forks and hard forks: how Bitcoin changes its rules without a boss
- solo bitcoin mining odds
- solo bitcoin mining odds explained
- Solo Bitcoin mining odds: expected time is not a deadline
- solo staking Ethereum requirements
- Solo staking Ethereum: what running a validator involves
- Soulbound tokens: transfer restrictions and issuer powers
- Speeding up or cancelling an Ethereum transaction
- Speedy Trial
- spend bitcoin paper wallet
- spend bitcoin paper wallet explained
- spot perpetual hedge basis risk
- Spot-perpetual basis risk: why a hedged position can still lose
- SPV
- SPV wallets: what a lightweight Bitcoin check can establish
- stable coin
- stablecoin blacklisting
- stablecoin blocklisting
- stablecoin bridge vs exchange
- stablecoin cross border payments
- stablecoin currency risk
- Stablecoin depegging: observe the price, then investigate the cause
- stablecoin deposit memos
- Stablecoin deposit memos and destination tags
- stablecoin deposit not credited
- stablecoin discount
- stablecoin eligibility
- Stablecoin freezes and issuer control
- Stablecoin market cap: supply times price, not a reserve audit
- stablecoin merchant payments
- stablecoin minting vs mining
- stablecoin off ramps
- Stablecoin off-ramps from tokens to a bank balance
- Stablecoin off-ramps: from tokens to a bank balance
- stablecoin payment reconciliation
- stablecoin payment refunds
- stablecoin payroll
- Stablecoin payroll payment rails and wage obligations
- Stablecoin payroll: payment rails and wage obligations
- stablecoin premium
- stablecoin price failure
- Stablecoin redemption arbitrage: why a peg can still slip
- stablecoin returns
- Stablecoin sent but not credited a diagnostic guide
- Stablecoin sent but not credited: a diagnostic guide
- stablecoin test transfers
- Stablecoin transfer fees: why you may still need the native token
- stablecoins
- stablecoins vs bitcoin
- Stablecoins vs Bitcoin different monetary designs
- Stablecoins vs Bitcoin: different monetary designs
- stablecoins vs cbdcs
- Stablecoins vs CBDCs who issues the money
- Stablecoins vs CBDCs: who issues the money?
- Stablecoins vs tokenized bank deposits
- stablecoins vs tokenized deposits
- StableSwap pools: low slippage near balance and risk away from it
- stake ETH
- stake less than 32 ETH
- staked USDe
- Staking as a service: which keys and duties go to the operator?
- staking deposit pending activation
- staking downtime penalties
- staking fee recipient withdrawal address
- staking provider withdrawal keys
- Starknet Cairo versus EVM
- Starknet explained
- Stefan Thomas IronKey
- stop loss stop limit crypto difference
- stop trigger versus limit price
- Stop-market and stop-limit orders: trigger price is not execution price
- Stratum mining: how pool jobs reach mining hardware
- Stratum protocol
- stratum v1 vs v2 bitcoin
- stratum v1 vs v2 bitcoin explained
- stuck bitcoin transaction
- Supply caps: limiting deposits into a lending reserve
- sUSDe
- sUSDS
- swap deadline expired quote
- Swap deadlines: why an old quote can stop executing
- swap exact input vs exact output
- Swap routing and aggregators: selecting a path through liquidity
- Syncing an Ethereum node: why downloads and verification take time
- Synthetic dollars: a dollar target built from positions
- synthetic stablecoins
T · 55 terms
- take profit market versus limit order
- Take-profit orders: triggers, partial fills and an open remainder
- Taproot activation
- taproot address bc1p
- Taproot explained
- Taproot explained: Schnorr signatures, hidden scripts and Bitcoin’s 2021 upgrade
- Test ETH and faucets: practicing without buying mainnet ether
- testnet ETH value
- tether authorized vs issued
- Tether authorized vs issued supply what the labels mean
- Tether authorized vs issued supply: what the labels mean
- Tether dollar
- The 2016 Bitfinex hack: 120,000 stolen bitcoin, a haircut for customers, and a record seizure
- The Beacon Chain after the Merge: consensus alongside execution
- The Bitcoin halving explained: what it is, when it happens, and what it does not do
- The Bitcoin white paper, explained: a plain-English walk through all nine pages
- The collapse of FTX: the run, the bankruptcy, and the 25-year sentence
- The cypherpunks: the mailing list and the ideas that came before Bitcoin
- The difficulty adjustment: Bitcoin’s two-week thermostat, explained
- The Ethereum Virtual Machine: how different computers agree
- The genesis block explained: the Times headline, the frozen 50 BTC and block 0
- The Lightning Network explained: payment channels, routing, and what it is good and bad at
- The Merge: Ethereum changed consensus while preserving its history
- The Patoshi pattern: the fingerprint of Bitcoin’s dominant early miner
- time-weighted average price
- token allowance
- Token approvals: what a spender can do after you authorize it
- token balance not showing
- token decimals
- Token emissions: rewards, dilution and the unit of account
- Token unlocks and vesting: when restricted supply becomes available
- token voting
- token wrapper
- tokenized MMFs
- Tokenized money-market funds: a fund share on blockchain rails
- tokenized vault
- total value locked
- Total value locked: what TVL measures and what it misses
- trade routing
- transaction hash
- transaction hash lookup
- transaction malleability
- transaction receipt
- Transaction simulation: useful rehearsal with an uncertain future
- transaction weight
- transfer versus redemption
- Transferring a stablecoin is not redeeming it
- tron usdt energy bandwidth
- trusted checkpoint Ethereum
- Turning collateral on or off: supply balance is not borrowing power
- TVL
- TWAP
- TWAP oracles: averaging prices over time
- typed data
- Typed-data signatures: reading EIP-712 messages
U · 29 terms
- UAHF
- unavailable withdrawal versus bad debt
- unconfirmed transaction
- unexpected token airdrop
- Unexpected tokens and NFTs: what does receiving an airdrop mean?
- Uniswap liquidity out of range what happens
- Uniswap v2 and v3: full-range versus concentrated liquidity
- Uniswap v4 hooks: custom pool behavior and extra dependencies
- UniswapX Dutch auction order
- unlimited approval
- unspent transaction output
- update bitcoin core safely
- update bitcoin core safely explained
- Updating Bitcoin software: releases, backups and compatibility
- USD Coin
- USD₮
- USDC and USDT: comparing two issuer-backed stablecoins
- usdc on solana
- USDC on Solana token accounts, SOL and transfers
- USDC on Solana: token accounts, SOL and transfers
- USDe
- USDt
- USDT TRC-20 vs ERC-20 the network difference
- USDT TRC-20 vs ERC-20: the network difference
- usdt trc20 vs erc20
- utilisation rate
- Utilization and borrowing rates: pricing a pool’s available funds
- UTXO
- utxo set
V · 22 terms
- validator deposit data
- validator fee recipient
- Validator fee recipients: where tips go versus staking withdrawals
- validator migration slashing protection
- validator rewards tips MEV
- Validator signing keys and withdrawal credentials: different powers
- validator signing withdrawal key
- validator slashing
- validator withdrawals
- validity proof
- Validity rollups: what does the proof prove?
- Variable debt tokens: tracking a borrower’s growing obligation
- Vault curators and allocators: who chooses the lending exposure?
- Vault inflation attacks: donations, rounding and first deposits
- Vault management and performance fees: how shares can pay the manager
- vault performance management fee example
- Vault share price: converting between shares and assets
- vbytes
- Verified contract source: what verification does and does not prove
- verify bitcoin wallet download
- verify bitcoin wallet download explained
- vsize
W · 137 terms
- wallet connection
- wallet connection error 4001
- wallet descriptor
- Wallet passphrases: seed extensions versus wallet-file encryption
- wallet signature request
- wallet support asking seed phrase
- WalletConnect session explained
- WalletConnect sessions: pairing a wallet with an application
- Watch-only wallets: seeing funds without the spending keys
- wei
- Wei and gwei: converting Ethereum amounts and gas prices
- Weighted liquidity pools: why every AMM is not fifty-fifty
- What a 51% attack can and cannot do to Bitcoin
- what a liquidity lock does not protect
- What a small stablecoin test transfer can prove
- What can an Ethereum RPC provider learn about a wallet?
- what does a bitcoin wallet store
- what does a signed swap intent authorize
- what does bc1q mean
- what does hodl mean
- what does the bitcoin whitepaper say
- what does unconfirmed mean bitcoin
- what happened to FTX
- What happens when an Ethereum validator goes offline?
- what happens when an insurance fund runs out
- What happens when you mint an NFT?
- What HODL means: the 2013 typo that became Bitcoin’s favorite word
- what is a BIP
- what is a blockchain
- What is a blockchain, and what does Bitcoin’s actually record?
- what is a hard fork
- what is a perpetual futures contract
- what is a private key bitcoin
- what is a satoshi
- What is a satoshi? Bitcoin’s smallest unit, and why it has a name
- What is a stablecoin? A target price and the system behind it
- What is a UTXO? How Bitcoin keeps track of coins without any accounts
- what is an inscription bitcoin
- What is Arbitrum One? Following a Nitro rollup transaction
- What is Base? Its network, execution and Ethereum settlement
- what is Beacon Chain
- what is bitcoin
- what is bitcoin core
- what is bitcoin core explained
- what is bitcoin mining
- What is Bitcoin? Money that runs on a public network instead of a bank
- what is bold
- What is BOLD Liquity V2’s stablecoin
- What is BOLD? Liquity V2’s stablecoin
- what is crvusd
- What is crvUSD Curve’s lending stablecoin
- What is crvUSD? Curve’s lending stablecoin
- What is DeFi? Financial applications built from smart contracts
- what is ENS name
- What is ENS? Names, addresses and the resolver between them
- What is Ethereum? A shared network for running programs
- What is EURC? A euro peg still carries dollar exchange-rate risk
- what is fdusd
- What is First Digital USD (FDUSD)
- What is First Digital USD (FDUSD)?
- what is frxusd
- What is frxUSD Frax USD explained
- What is frxUSD? Frax USD explained
- what is gho
- What is GHO Aave’s stablecoin
- What is GHO? Aave’s stablecoin
- What is Global Dollar (USDG)
- What is Global Dollar (USDG)?
- what is hash rate
- what is in a bitcoin block
- what is lusd
- What is LUSD Liquity V1’s stablecoin
- What is LUSD? Liquity V1’s stablecoin
- What is OP Mainnet? The chain, the OP Stack and its settlement
- What is Pax Dollar (USDP)
- What is Pax Dollar (USDP)?
- what is pax gold
- What is PAX Gold (PAXG) Gold tokens vs dollar stablecoins
- What is PAX Gold (PAXG)? Gold tokens vs dollar stablecoins
- what is proof of work
- What is PYUSD? Issuance, backing and controls
- What is Ripple USD (RLUSD)
- What is Ripple USD (RLUSD)?
- what is rlusd
- what is SegWit
- What is Starknet? Cairo accounts and validity proofs on Ethereum
- What is sUSDe? A staking receipt, not the same token as USDe
- What is sUSDS? Shares in a USDS savings arrangement
- what is Taproot
- what is the Bitcoin halving
- what is the Lightning Network
- What is USDC? The token, its reserves and its redemption route
- What is USDe? The synthetic dollar and its hedge
- what is usdg
- what is usdp
- What is USDT? Tether’s token and the meaning of its reserves
- What is ZKsync Era? Validity proofs and Ethereum application compatibility
- where did bitcoin miners go
- Where do Ethereum staking rewards come from?
- Where does stablecoin yield come from?
- Who can mint or redeem a stablecoin?
- who decides bitcoin changes
- who is Satoshi Nakamoto
- Who is Satoshi Nakamoto? What the record actually shows, and what it does not
- why a dollar strike option pays BTC
- Why an on-chain stablecoin can still depend on banks
- Why are accounts missing after restoring MetaMask?
- why are bitcoin fees so high
- Why Bitcoin blocks sometimes take an hour
- Why can’t I send my entire ETH balance?
- why cannot I withdraw my lending balance
- why cannot withdraw supplied tokens Aave
- why did Bitcoin split
- why did my swap expire
- why did Satoshi leave
- why does a DEX swap cost so much
- Why does an Ethereum token balance not appear in my wallet?
- Why dollar stablecoins still carry currency risk
- Why Ethereum burns fees, and why supply does not always fall
- Why is my Bitcoin transaction still unconfirmed?
- Why is my NFT missing from a wallet or marketplace display?
- Why is my rollup withdrawal still waiting?
- why liquidation happens before balance reaches zero
- Why sending USDT on TRON uses Energy and Bandwidth
- why was my post only order cancelled
- Why won’t an Ethereum app connect to my wallet?
- WikiLeaks and Bitcoin: the 2010 blockade, Satoshi’s plea, and the donations that followed
- WikiLeaks bitcoin
- WikiLeaks bitcoin donations 2011
- WikiLeaks payment blockade
- withdraw pool liquidity without swapping
- Withdrawal queues: a claim today and settlement later
- Withdrawing lending supply: liquidity, collateral and transaction limits
- Wrapped assets: an interface change or a separate backing claim
- wrapped stablecoins
- Wrapped staked ether: shares instead of a rebasing balance
- wstETH
Y · 2 terms
Browse all 425 entries
Bitcoin
Understand the original cryptocurrency, its history, and the evidence recorded on its chain.
- Bitcoin · ExplanationReplace-by-fee: replacing a pending Bitcoin paymentUnderstand how a pending Bitcoin transaction can be replaced, what changes, and why replacement is a node policy rather than a confirmation guarantee.3 min · 5 sources
- Bitcoin · ExplanationChild pays for parent: how a second transaction can lift the firstSee how a child transaction can make a package more attractive to miners, including the fee calculation and the requirement to control a spendable output.3 min · 5 sources
- Bitcoin · ExplanationWhy is my Bitcoin transaction still unconfirmed?Diagnose an unconfirmed Bitcoin payment by separating broadcast, mempool acceptance, fee competition, conflicts and confirmation.3 min · 6 sources
- Bitcoin · ExplanationBitcoin change addresses: where the rest of a payment goesFollow a Bitcoin payment with a change output and learn why an unfamiliar output address may still belong to the sender’s wallet.3 min · 4 sources
- Bitcoin · ExplanationBitcoin coin selection: which UTXOs a wallet spendsUnderstand how selecting Bitcoin UTXOs changes transaction size, fees, change and the relationships revealed on the public ledger.3 min · 5 sources
- Bitcoin · ExplanationCoin control: choosing which bitcoin to spendLearn what coin-control features let a Bitcoin wallet user choose, and distinguish input selection from a guarantee of transaction privacy.3 min · 6 sources
- Bitcoin · ExplanationBitcoin dust: a relay-policy threshold, not a smallest coinDistinguish Bitcoin dust relay policy from consensus validity and the satoshi unit, including why the threshold depends on the output type and fee setting.3 min · 7 sources
- Bitcoin · ExplanationBitcoin virtual size: bytes, weight and vbytesConvert Bitcoin transaction weight to virtual size and understand why raw bytes and fee-paying vbytes are not interchangeable.3 min · 2 sources
- Bitcoin · ExplanationBitcoin fee rates: sat/vB versus the total feeCalculate a Bitcoin fee from virtual size and sat/vB, and distinguish a rate estimate from the amount actually paid or a promised confirmation time.3 min · 3 sources
- Bitcoin · ExplanationBitcoin multisig: what a two-of-three wallet actually requiresUnderstand threshold signing, a two-of-three example, backup requirements and why three keys do not necessarily mean three independent people.3 min · 3 sources
- Bitcoin · ExplanationPSBT: passing a Bitcoin transaction between signersLearn what a PSBT contains, which roles update or sign it, and why possessing the file is not the same as possessing the coins.3 min · 2 sources
- Bitcoin · ExplanationOutput descriptors: describing what a Bitcoin wallet can findUnderstand how Bitcoin descriptors describe scripts and key derivation, why their checksum is useful, and why some descriptors are sensitive.3 min · 3 sources
- Bitcoin · ExplanationExtended public keys: useful backups with privacy consequencesLearn what an extended public key can derive, what it reveals about a wallet and why hardened derivation boundaries matter.3 min · 2 sources
- Bitcoin · ExplanationWatch-only wallets: seeing funds without the spending keysUnderstand the capabilities and limits of a wallet that monitors Bitcoin outputs without possessing the private keys needed to spend them.3 min · 5 sources
- Bitcoin · ExplanationWallet passphrases: seed extensions versus wallet-file encryptionDistinguish a BIP-39 seed passphrase from a wallet-file password and understand why a different passphrase can open a different wallet without an error.3 min · 3 sources
- Bitcoin · ExplanationBitcoin address reuse: what it revealsSee what repeated use of a Bitcoin address reveals and why fresh addresses improve separation without making the transaction graph anonymous.3 min · 4 sources
- Bitcoin · ExplanationBitcoin timelocks: absolute dates and relative waiting periodsCompare absolute and relative Bitcoin timelocks, block-height and time-based conditions, and the difference between becoming spendable and being paid automatically.3 min · 5 sources
- Bitcoin · ExplanationBitcoin Merkle proofs: proving inclusion without the full blockUnderstand how a transaction inclusion proof connects a Bitcoin transaction to a block header and which questions that proof does not answer.3 min · 3 sources
- Bitcoin · ExplanationSPV wallets: what a lightweight Bitcoin check can establishLearn what Bitcoin SPV checks using headers and Merkle branches, and how its assurances differ from full transaction validation.3 min · 4 sources
- Bitcoin · ExplanationPruned Bitcoin nodes: full validation with less historical storageUnderstand how Bitcoin pruning reduces retained block storage while preserving validation, and which historical queries it makes unavailable locally.3 min · 3 sources
- Bitcoin · ExplanationBitcoin reorganizations: when a confirmed transaction changes branchFollow what happens when a Bitcoin node switches to a valid branch with more accumulated work and why a transaction’s confirmation count can change.3 min · 3 sources
- Bitcoin · ExplanationCoinbase maturity: why newly mined bitcoin must waitLearn why newly created Bitcoin coinbase outputs have a 100-block maturity condition and distinguish it from ordinary payment confirmation policies.3 min · 4 sources
- Bitcoin · ExplanationLightning channels: balances, commitments and closingUnderstand how a Lightning payment channel updates a shared balance off-chain and how funding, commitment transactions and closing connect it to Bitcoin.3 min · 2 sources
- Bitcoin · ExplanationLightning inbound liquidity: why receiving needs capacityLearn why a Lightning wallet can have funds available to send but insufficient capacity to receive, with a simple channel-balance example.3 min · 3 sources
- Bitcoin · ExplanationLightning routing fees: base fees and proportional feesCalculate a Lightning forwarding fee from a base charge and proportional rate, and distinguish routing fees from on-chain channel costs.3 min · 2 sources
- Bitcoin · ExplanationHow to receive Bitcoin: addresses, amounts and arrival checksLearn what to share to receive bitcoin, verify the destination and distinguish a visible payment from an available balance.3 min · 9 sources
- Bitcoin · ExplanationHow to send Bitcoin: review the destination, amount and feeFollow a Bitcoin payment from a trusted request through amount and fee review, signing, broadcasting and confirmation.3 min · 7 sources
- Bitcoin · ExplanationBitcoin payment requests and QR codes: what a scan actually tells youUnderstand Bitcoin payment QR codes and URI fields, including decimal BTC amounts, labels, alternative routes and recipient checks.3 min · 3 sources
- Bitcoin · ExplanationBitcoin refunds: why returning a payment requires a new transactionLearn why a Bitcoin refund is a new payment, how to choose its destination and why copying an original input address can lose the refund.3 min · 6 sources
- Bitcoin · ExplanationBitcoin received but missing from your wallet: what to checkDiagnose a Bitcoin receipt that appears on the chain but is absent from your wallet by checking network, account, synchronization and address discovery.3 min · 12 sources
- Bitcoin · ExplanationSending all your bitcoin: why Send Max differs from the displayed balanceUnderstand Send Max by separating spendable inputs, transaction fees, watch-only balances and the recipient’s final amount.3 min · 4 sources
- Bitcoin · ExplanationBitcoin payment batching: many recipients in one transactionSee how Bitcoin batching combines recipients, changes fee overhead and reveals payment relationships, with an illustrative size comparison.3 min · 3 sources
- Bitcoin · ExplanationBitcoin withdrawal fees versus network feesReconcile a Bitcoin service withdrawal fee with the amount received and the miner fee, especially when withdrawals are batched.3 min · 5 sources
- Bitcoin · ExplanationBitcoin merchant invoices: paid, expired, short and overpaidRead Bitcoin invoice states without confusing a payment request, detected funds, settlement, partial payment and a merchant refund.3 min · 2 sources
- Bitcoin · ExplanationChecking a Bitcoin address: format, network and recipientCheck Bitcoin address syntax and network compatibility while keeping recipient authentication separate from checksum validity.3 min · 6 sources
- Bitcoin · ExplanationHardware wallets: what the device protects and what it cannot checkUnderstand hardware-wallet signing, device-screen checks and recovery without assuming the hardware can authenticate every request.3 min · 6 sources
- Bitcoin · ExplanationHot wallets versus cold wallets: compare signing and recovery pathsCompare hot and cold Bitcoin wallets by key exposure, payment workflow and recovery rather than by where a balance is displayed.3 min · 5 sources
- Bitcoin · ExplanationOffline Bitcoin signing: build, inspect, sign and broadcastFollow an offline Bitcoin signing workflow and understand the limits of unsigned files, transfer media and broadcast confirmation.3 min · 3 sources
- Bitcoin · ExplanationImporting versus sweeping Bitcoin private keysCompare importing a private key with sweeping its funds into a new Bitcoin wallet, including fees and future backup requirements.3 min · 4 sources
- Bitcoin · ExplanationBitcoin paper wallets: what to understand before spending from oneUnderstand legacy Bitcoin paper wallets, private-key copies, change outputs and the difference between importing and sweeping funds.3 min · 6 sources
- Bitcoin · ExplanationBrainwallets versus seed phrases: why a memorable sentence is differentDistinguish a human-chosen brainwallet sentence from a randomly generated mnemonic and understand why word count does not measure unpredictability.3 min · 2 sources
- Bitcoin · Explanation12 versus 24 seed words: entropy, checksums and compatibilityCompare 12- and 24-word BIP-39 mnemonics using entropy and checksum arithmetic, while keeping wallet-format compatibility separate.3 min · 4 sources
- Bitcoin · ExplanationBitcoin wallet gap limits: why an address can be missed during recoveryLearn how Bitcoin address gap limits affect recovery, why later receipts can be missed and how to investigate without exposing the seed.3 min · 3 sources
- Bitcoin · ExplanationBitcoin wallet-file backups: what a seed may not preserveUnderstand Bitcoin wallet-file backups, imported keys and local metadata, and why restoring a seed may not recreate the entire application state.3 min · 7 sources
- Bitcoin · ExplanationChecking Bitcoin wallet downloads and software signaturesCheck Bitcoin wallet software origin, release signatures and signer identity without mistaking a matching hash for proof of a safe program.3 min · 4 sources
- Bitcoin · ExplanationBitcoin Core explained: node software, wallet and RPC interfaceUnderstand the roles of Bitcoin Core’s node, optional wallets and RPC interface without confusing running software with earning bitcoin.3 min · 6 sources
- Bitcoin · ExplanationBitcoin initial synchronization: downloading is only part of the jobUnderstand Bitcoin initial block download, header and block progress, validation work and why a sync percentage is not a reliable countdown.3 min · 6 sources
- Bitcoin · ExplanationYour Bitcoin node versus a wallet server: who supplies the answers?Compare a wallet’s use of public servers with a personal Bitcoin node and understand which privacy and verification assumptions change.3 min · 5 sources
- Bitcoin · ExplanationBitcoin wallet rescan versus node reindexDistinguish a Bitcoin wallet rescan from rebuilding node indexes and chainstate, including what neither operation can recover.3 min · 6 sources
- Bitcoin · ExplanationBitcoin mainnet, testnet, signet and regtestCompare Bitcoin mainnet, testnet, signet and regtest so testing does not get confused with real payments or identical network behavior.3 min · 5 sources
- Bitcoin · ExplanationBitcoin node connection problems: peers, headers and local accessDiagnose a Bitcoin node by separating peer connectivity, block processing and access from a local wallet application.3 min · 5 sources
- Bitcoin · ExplanationBitcoin RPC security: why a node API needs restricted accessUnderstand Bitcoin Core RPC authority, local authentication and remote-access risks without confusing the API with ordinary peer networking.3 min · 2 sources
- Bitcoin · ExplanationUpdating Bitcoin software: releases, backups and compatibilityPlan a Bitcoin software update around authentic releases, usable backups and wallet or API compatibility rather than assuming installation changes the network rules.3 min · 8 sources
- Bitcoin · ExplanationBroadcasting a signed Bitcoin transaction: what acceptance provesDistinguish a signed Bitcoin transaction, a local mempool test, network broadcast and block inclusion, including privacy and retry implications.3 min · 7 sources
- Bitcoin · ExplanationBitcoin message signatures: proof of control with clear limitsUnderstand what Bitcoin signed messages can demonstrate, why format compatibility matters and why a signature does not prove identity or permanent control.3 min · 1 sources
- Bitcoin · ExplanationOn-chain Bitcoin versus Lightning: choose the correct payment routeCompare a Bitcoin on-chain payment with Lightning by payment destination, settlement, fees, availability and recovery needs.3 min · 11 sources
- Bitcoin · ExplanationLightning invoices: amount, expiry and payment statusRead Lightning invoices: amount, network, expiry, payment hash and why a fresh invoice is usually needed for a fresh payment.3 min · 3 sources
- Bitcoin · ExplanationLightning addresses: an email-like name that requests an invoiceUnderstand Lightning Addresses, their email-like syntax and the service that turns them into invoices.3 min · 2 sources
- Bitcoin · ExplanationCustodial and self-custodial Lightning walletsCompare custodial and self-custodial Lightning wallets by signing control, service reliance, backups and withdrawal.3 min · 6 sources
- Bitcoin · ExplanationLightning channel backups: why a seed alone may not be enoughUnderstand what Lightning channel backups recover, why a seed alone may be insufficient and how LND static channel backups differ from live state.3 min · 3 sources
- Bitcoin · ExplanationLightning watchtowers: monitoring channels while a wallet is offlineUnderstand Lightning watchtowers, the revoked-state problem they monitor and why they do not replace backups or guarantee payment availability.3 min · 7 sources
- Bitcoin · ExplanationLightning force closes: why funds can take time to returnUnderstand a Lightning force close, its delayed outputs, sweep transactions and the difference from a cooperative close.3 min · 5 sources
- Bitcoin · ExplanationLightning payment pending, failed or succeeded: when to retryInterpret pending, failed and successful Lightning payments without treating a dispatch timeout as final failure.3 min · 3 sources
- Bitcoin · ExplanationLightning submarine swaps: moving between channels and on-chain fundsUnderstand how submarine swaps move between on-chain and Lightning balances, including fees, timeouts and refund work.3 min · 2 sources
- Bitcoin · ExplanationBOLT 12 offers: reusable Lightning requests and fresh invoicesUnderstand reusable BOLT 12 offers and how a wallet requests a fresh Lightning invoice before paying.3 min · 4 sources
- Bitcoin · ExplanationBitcoin mining hardware: hash rate, power and ASIC efficiencyRead Bitcoin mining hardware specifications: hash rate, wall power, energy efficiency and the practical limits of a rated performance figure.3 min · 4 sources
- Bitcoin · ExplanationMining pool payouts: PPS, FPPS and PPLNSCompare PPS, PPLNS, FPPS and PPS+ mining pool payouts and understand where block-finding variance and transaction fees enter the calculation.3 min · 4 sources
- Bitcoin · ExplanationSolo Bitcoin mining odds: expected time is not a deadlineEstimate solo Bitcoin mining odds without turning an expected waiting time into a promised reward date.3 min · 3 sources
- Bitcoin · ExplanationRejected and stale mining shares: reading a pool dashboardUnderstand accepted, stale and rejected mining shares and why local and pool hash-rate displays can differ.3 min · 3 sources
- Bitcoin · ExplanationStratum mining: how pool jobs reach mining hardwareUnderstand Stratum mining communication, the role of a pool or proxy and what Stratum V2’s optional job declaration changes.3 min · 6 sources
- Bitcoin · ExplanationCan Bitcoin be frozen? Keys, custodians and miner censorshipDistinguish freezing a Bitcoin exchange account from changing Bitcoin spending rules, censoring a transaction or using a wallet’s local coin lock.3 min · 7 sources
- Bitcoin · ExplanationWhy Bitcoin blocks sometimes take an hourUnderstand why Bitcoin blocks can arrive seconds or much longer apart even though the target interval is about ten minutes.3 min · 5 sources
- Bitcoin · ExplanationBitcoin transaction ID versus wallet addressDistinguish a Bitcoin transaction ID from a receiving address, an output index and a SegWit witness transaction ID.3 min · 3 sources
- Bitcoin · ExplanationBitcoin Payjoin: a payment built with inputs from both sidesUnderstand Payjoin, where the receiver adds inputs to a Bitcoin payment and why that weakens the common-input ownership assumption.3 min · 4 sources
- Bitcoin · ExplanationBitcoin CoinJoin: collaborative transactions and privacy limitsUnderstand CoinJoin as collaborative Bitcoin transaction construction, including signing control and the limits of equal-output privacy.3 min · 3 sources
- Bitcoin · ExplanationWhat is Bitcoin? Money that runs on a public network instead of a bankBitcoin is digital money that moves over a public network with no bank in the middle. What it is, where it came from and how it works, with sources.8 min · 6 sources
- Bitcoin · ExplanationWhat is a blockchain, and what does Bitcoin’s actually record?A blockchain is a record built in batches, each sealed to the last. How Bitcoin’s works, what it stores, and why the word means less than it sounds.9 min · 7 sources
- Bitcoin · ExplanationHow Bitcoin mining works: the job, the reward and the raceBitcoin mining is how new blocks get added and new coins get made. What miners actually do, how they are paid, and why it takes so much hardware.9 min · 6 sources
- Bitcoin · ExplanationProof of work, explained without the math: why Bitcoin runs on a lotteryBitcoin proof of work is a hash-target test, not a useful puzzle with a hidden solution. Separate mining effort, block validity and chain selection.10 min · 6 sources
- Bitcoin · ExplanationWhat is a satoshi? Bitcoin’s smallest unit, and why it has a nameOne bitcoin equals 100 million satoshis. Convert BTC to sats, distinguish the unit from its market price, and follow the original naming record.8 min · 8 sources
- Bitcoin · ExplanationBitcoin wallets explained: hot, cold, hardware, custodial, and what they actually storeA Bitcoin wallet holds keys, not coins. What hot, cold, hardware and custodial wallets are, how they differ, and where the risk sits in each one.10 min · 5 sources
- Bitcoin · ExplanationPrivate keys, public keys and seed phrases: what actually controls your bitcoinA private key is a secret number that can spend bitcoin; a seed phrase is 12 or 24 words that regenerate every key. How both work, and why losing them is final.7 min · 10 sources
- Bitcoin · ExplanationBitcoin address types: why some start with 1, some with 3, and some with bc1Bitcoin addresses come in four common formats: legacy, P2SH, native SegWit and Taproot. What each prefix means, where it came from, and which BIP defines it.9 min · 8 sources
- Bitcoin · ExplanationWhat is a UTXO? How Bitcoin keeps track of coins without any accountsA UTXO is an unspent transaction output: a lump of bitcoin a transaction created and nobody has spent yet. How the model works and why change outputs exist.8 min · 7 sources
- Bitcoin · ExplanationBitcoin confirmations: what they mean, why six became the convention, and why none is finalA confirmation is a block built on top of the one holding your transaction. Why six became the convention, what a reorg is, and why nothing is ever final.8 min · 5 sources
- Bitcoin · ExplanationBitcoin transaction fees and the mempool: how fees are set and why they spikeHow Bitcoin transaction fees work: why you pay per byte, what the mempool is, why fees spike when blocks fill up, and how replace-by-fee unsticks a payment.6 min · 11 sources
- Bitcoin · ExplanationBitcoin nodes explained: what a full node does, and why people run oneA Bitcoin full node checks every block and transaction against the rules itself. What that involves, what pruning keeps, why people bother, and how many exist.6 min · 8 sources
- Bitcoin · ExplanationThe difficulty adjustment: Bitcoin’s two-week thermostat, explainedEvery 2,016 blocks Bitcoin re-tunes how hard mining is so blocks keep coming every ten minutes. How the retarget works, the 4x clamp, and the record 2021 drop.7 min · 7 sources
- Bitcoin · ExplanationBitcoin hash rate: what it measures, why it is only an estimate, and why it mattersHash rate is the number of mining guesses per second across the Bitcoin network. Nobody measures it directly; it is inferred from difficulty and block times.9 min · 8 sources
- Bitcoin · ExplanationAnatomy of a Bitcoin block: the header, the coinbase and the weight limit, using block 0Inside a Bitcoin block: the six header fields, the coinbase transaction that mints new coins, and how size and weight are counted, with block 0 as the example.9 min · 8 sources
- Bitcoin · ExplanationDouble spending: the problem Bitcoin was built to solve, and how it solves itA Bitcoin double spend is a conflict over the same transaction output. Follow a simple example and separate confirmation depth from absolute finality.10 min · 5 sources
- Bitcoin · ExplanationWhat a 51% attack can and cannot do to BitcoinA 51% attack is what a miner with most of the hash power could do: reverse recent payments and block others. It cannot steal or mint coins. Here is the record.9 min · 8 sources
- Bitcoin · ExplanationSoft forks and hard forks: how Bitcoin changes its rules without a bossCompare soft forks and hard forks by which blocks old and new rules accept. Learn why a protocol change does not always produce a lasting chain split.9 min · 8 sources
- Bitcoin · ExplanationBitcoin Improvement Proposals: how ideas become Bitcoin, and why a BIP is not a lawA BIP number identifies a proposal, not approval. Learn how to read a Bitcoin Improvement Proposal’s status, motivation and deployment requirements.9 min · 8 sources
- Bitcoin · ExplanationHow Bitcoin mining pools work: shares, payouts and the pool that started it in 2010Mining pools combine hash power and split block rewards for a steadier income. How shares and payouts work, the first pool in 2010, and Stratum.9 min · 8 sources
- Bitcoin · ExplanationSegWit explained: what Segregated Witness changed in Bitcoin, and how it activated in 2017SegWit changed transaction identifiers and introduced block weight. Learn what it fixes, how virtual size works and why savings depend on the transaction.9 min · 7 sources
- Bitcoin · ExplanationTaproot explained: Schnorr signatures, hidden scripts and Bitcoin’s 2021 upgradeTaproot combines Schnorr signatures with key-path and script-path spending. Compare what each path reveals and the limits of its privacy benefits.9 min · 7 sources
- Bitcoin · ExplanationThe Lightning Network explained: payment channels, routing, and what it is good and bad atThe Lightning Network moves bitcoin through payment channels instead of the blockchain. How channels and routing work, why it is a second layer, and its limits.10 min · 8 sources
- Bitcoin · ExplanationBitcoin Cash: why Bitcoin split on 1 August 2017, and what happened to both sides afterBitcoin Cash’s 2017 split: shared earlier history, incompatible block rules and replay protection. Distinguish the historical fork from current network settings.10 min · 8 sources
- Bitcoin · ExplanationThe Bitcoin halving explained: what it is, when it happens, and what it does not doEvery 210,000 blocks Bitcoin halves the reward for mining a block. Why the rule exists, the halvings of 2012, 2016, 2020 and 2024, and what it does not change.8 min · 11 sources
- Bitcoin · ExplanationWho is Satoshi Nakamoto? What the record actually shows, and what it does notWhat Bitcoin’s paper, software and correspondence establish about Satoshi Nakamoto—and where evidence ends and identity speculation begins.6 min · 6 sources
- Bitcoin · ExplanationSatoshi Nakamoto’s disappearance: the last posts, the last emails and the handoverSatoshi Nakamoto’s last forum post was on 12 December 2010. Private emails in April 2011 said he had moved on. Here is the record of how Bitcoin’s creator left.7 min · 8 sources
- Bitcoin · ExplanationHal Finney: early Bitcoin, RPOW and the first test paymentHal Finney’s role in early Bitcoin, his own account of the first test payment, and what block 170 can establish independently of the biography.7 min · 7 sources
- Bitcoin · ExplanationCraig Wright and the COPA ruling: what the High Court found, in its own wordsIn 2024 the High Court in London found that Craig Wright is not Satoshi Nakamoto and did not write the white paper. What the judge found, and what came after.10 min · 7 sources
- Bitcoin · ExplanationGavin Andresen and the Bitcoin faucet: free coins, and the developer Satoshi handed Bitcoin toIn June 2010 Gavin Andresen built a website that gave five bitcoin to anyone who asked. Satoshi liked it. Six months later, Satoshi handed him the project.8 min · 8 sources
- Bitcoin · ExplanationThe cypherpunks: the mailing list and the ideas that came before BitcoinCompare the privacy and digital-cash ideas behind Bitcoin: blind signatures, Hashcash, b-money and bit gold, with links to the original proposals.11 min · 8 sources
- Bitcoin · ExplanationThe Bitcoin white paper, explained: a plain-English walk through all nine pagesRead Bitcoin’s white paper by problem: double spending, proof of work, incentives and privacy. Separate the 2008 design from later protocol rules.11 min · 8 sources
- Bitcoin · ExplanationThe genesis block explained: the Times headline, the frozen 50 BTC and block 0Bitcoin’s genesis block, its embedded headline and the original unspendable 50 BTC output. Learn why later payments to the address are different.6 min · 6 sources
- Bitcoin · ExplanationBitcoin Pizza Day: the 10,000 BTC pizza order that proved Bitcoin could buy thingsWhy Bitcoin Pizza Day is 22 May: the original offer, the reported 10,000 BTC trade and the different evidence supplied by the forum and blockchain.8 min · 4 sources
- Bitcoin · ExplanationWhat HODL means: the 2013 typo that became Bitcoin’s favorite wordHODL began as a misspelling in a December 2013 Bitcoin forum post. Read its origin and meaning without treating the slogan as an investment rule.8 min · 6 sources
- Bitcoin · ExplanationWikiLeaks and Bitcoin: the 2010 blockade, Satoshi’s plea, and the donations that followedHow the 2010 payment blockade pushed WikiLeaks toward bitcoin, why Satoshi asked it to wait, and what happened when donations began in 2011.8 min · 8 sources
- Bitcoin · ExplanationSilk Road and Ross Ulbricht: the marketplace, the life sentence, and the 2025 pardonSilk Road ran from 2011 to 2013 and took only bitcoin. What the courts found about Ross Ulbricht, why he got life, and what the January 2025 pardon changed.8 min · 8 sources
- Bitcoin · ExplanationThe 2016 Bitfinex hack: 120,000 stolen bitcoin, a haircut for customers, and a record seizureIn August 2016 a hacker took about 120,000 bitcoin from Bitfinex. How customers were repaid, why the coins sat still, and how the US recovered most of them.9 min · 8 sources
- Bitcoin · ExplanationThe collapse of FTX: the run, the bankruptcy, and the 25-year sentenceFTX, a crypto exchange, collapsed in November 2022 when customer money turned out to be missing. What happened, what courts found, and why Bitcoin kept running.9 min · 7 sources
- Bitcoin · ExplanationChina’s 2021 Bitcoin mining ban: what happened, and where the miners wentIn 2021 China ordered bitcoin mining shut down and declared crypto business illegal. What the notices said, how far hash rate fell, and where the miners moved.8 min · 8 sources
- Bitcoin · ExplanationOrdinals and inscriptions: how images and text ended up inside Bitcoin blocksOrdinal theory numbers individual satoshis; inscriptions attach files to them using Taproot witness data. How it works, the 2023 launch and the spam debate.9 min · 8 sources
- Bitcoin · ExplanationBitcoin Ponzi schemes and scams: a short history, and how to spot the next oneFrom Bitcoin Savings and Trust in 2011 to PlusToken, BitConnect and OneCoin: what the court and regulator records say, and the shapes these frauds keep taking.4 min · 4 sources
- Bitcoin · ExplanationHow many bitcoins are there? The 21 million cap, explainedBitcoin’s code caps supply just under 21 million. How many have been issued, how many are stuck or lost, when the last arrives, and what each number means.9 min · 7 sources
- Bitcoin · ExplanationHow many bitcoins are lost forever? What the estimates can and cannot tell youMillions of bitcoin may be unrecoverable, but nobody can count them: the estimates, the famous lost fortunes, coins that can never move, and Satoshi’s stash.4 min · 4 sources
- Bitcoin · ExplanationHow much energy does Bitcoin use? How it is measured, and what actually drives itBitcoin’s electricity use is estimated from hash rate and hardware efficiency, not counted. What the Cambridge index, the White House and the EIA found.10 min · 6 sources
- Bitcoin · ExplanationDormant bitcoin whales: what it means when old coins wake up after a decadeOld coins that suddenly move make headlines. What “dormant” means on the ledger, the July 2025 case of eight 2011 wallets, and why a move is not a sale.8 min · 7 sources
- Bitcoin · ExplanationThe Patoshi pattern: the fingerprint of Bitcoin’s dominant early minerThe Patoshi pattern groups early Bitcoin blocks using mining-pattern analysis. Understand Lerner’s estimates, their dates and the limits of attribution.8 min · 6 sources
- Bitcoin · ExplanationIs Bitcoin anonymous? No, it is pseudonymous, and the difference mattersEvery Bitcoin transaction is public forever. Addresses are pseudonyms, not names, and pseudonyms can be linked. How tracing works and what people do about it.8 min · 11 sources
- Bitcoin · ExplanationHow to read a block explorer: transactions, fees, confirmations and addressesA block explorer lets anyone read the Bitcoin ledger: how to look up a transaction, read inputs, outputs, fees and confirmations, and not over-read an address.8 min · 9 sources
- Bitcoin · ExplanationBitcoin price history, year by year: 2010 to 2025 from one sourced datasetYear-end bitcoin prices from 2010 to 2025 from one sourced dataset, the eras behind them (Mt. Gox, 2013, 2017, 2021, ETFs), and why the past predicts nothing.7 min · 6 sources
Ethereum
Explore accounts, smart contracts, proof of stake, and the networks built around Ethereum.
- Ethereum · ExplanationWhat is Ethereum? A shared network for running programsUnderstand Ethereum through a simple shared-program example: accounts, transactions, smart contracts, ETH and the limits of what the network proves.3 min · 7 sources
- Ethereum · ExplanationEther and Ethereum: the asset, the network and the unitsSeparate ether from Ethereum and learn ETH, gwei and wei with a worked example, including why a token transfer can still require an ETH fee.3 min · 8 sources
- Ethereum · ExplanationEthereum accounts: keys, contract code and delegated accountsUnderstand Ethereum accounts and wallet software, then see how key-controlled accounts, contract accounts and EIP-7702 delegation differ.3 min · 6 sources
- Ethereum · ExplanationEthereum transactions and nonces: how requests stay in orderRead an Ethereum transaction’s destination, value, data and nonce, with a pending-payment example and the difference between execution and finality.3 min · 10 sources
- Ethereum · ExplanationEthereum gas fees: units, prices and the amount actually paidCalculate an illustrative Ethereum fee, distinguish gas used from the gas limit, and understand base fees, tips and charges for failed execution.3 min · 12 sources
- Ethereum · ExplanationWhy Ethereum burns fees, and why supply does not always fallSee how Ethereum base-fee burning works, where the tip goes and why net ETH supply depends on both destruction and issuance over a stated interval.3 min · 5 sources
- Ethereum · ExplanationSmart contracts: programmed rules, examples and outside promisesFollow a simple escrow example to understand contract code, state, authorization, external data and the difference between execution and a real promise.3 min · 11 sources
- Ethereum · ExplanationThe Ethereum Virtual Machine: how different computers agreeLearn how the EVM turns transactions into the same state changes on different computers, with a counter example and clear limits to EVM compatibility.3 min · 5 sources
- Ethereum · ExplanationReading Ethereum wallet requests: connection, signing and callsDistinguish connecting a wallet, signing a message and sending a transaction, and learn how decoded contract requests reveal amounts and permissions.3 min · 10 sources
- Ethereum · ExplanationERC-20 tokens: balances, decimals and spending permissionsUnderstand the ERC-20 token interface through a balance and decimals example, including allowances and what the standard does not say about value.3 min · 6 sources
- Ethereum · ExplanationERC-721 NFTs: the token, its metadata and what ownership meansSeparate an NFT’s onchain ownership record from its image, metadata and outside rights, with a token-ID example and an explanation of approvals.3 min · 4 sources
- Ethereum · ExplanationERC-1155: many token types and batch transfers in one contractUse a game-inventory example to learn ERC-1155 balances, token IDs, batch transfers, receiving checks and the scope of operator approvals.3 min · 5 sources
- Ethereum · ExplanationToken approvals: what a spender can do after you authorize itWalk through an ERC-20 allowance example and compare token, NFT and operator approvals, including revocation and the limits of disconnecting a wallet.3 min · 7 sources
- Ethereum · ExplanationSmart accounts: programmable authorization, recovery and gasUnderstand smart accounts through batching and recovery examples, then distinguish ERC-4337 user operations from EIP-7702 delegation and sponsorship.3 min · 5 sources
- Ethereum · ExplanationEthereum proof of stake: blocks, votes and checkpoint finalityFollow Ethereum slots, epochs and checkpoint votes, and distinguish transaction inclusion from finality using a simple stake-weighted example.3 min · 6 sources
- Ethereum · ExplanationEthereum staking and withdrawals: balances, duties and queuesUnderstand validator staking, the difference between legacy and compounding balances, and why exiting and receiving a withdrawal are separate steps.3 min · 5 sources
- Ethereum · ExplanationEthereum slashing: conflicting signatures, penalties and downtimeSeparate slashable validator messages from routine downtime, with a duplicated-key example and an explanation of correlated penalties and exits.3 min · 5 sources
- Ethereum · ExplanationThe Merge: Ethereum changed consensus while preserving its historyUnderstand Ethereum’s 2022 Merge through what changed and what stayed: consensus, ETH balances, fees, issuance and later staking withdrawals.3 min · 7 sources
- Ethereum · ExplanationEthereum layer 2: execution elsewhere, settlement on EthereumFollow an illustrative rollup payment to distinguish layer-2 execution, Ethereum settlement, separate balances, bridges and implementation-specific risks.3 min · 5 sources
- Ethereum · ExplanationOptimistic rollups: state claims, challenges and withdrawal waitsUnderstand optimistic rollups through an incorrect-balance example, including fault proofs, data availability, challengers and withdrawal timing.3 min · 3 sources
- Ethereum · ExplanationValidity rollups: what does the proof prove?Learn how validity rollups prove state changes, why data still matters, and why a proof does not make every transaction private or instant.3 min · 4 sources
- Ethereum · ExplanationEthereum blobs and data availabilityUnderstand how Ethereum blobs carry rollup data, how commitments differ from data, and why availability is not permanent archival storage.3 min · 4 sources
- Ethereum · ExplanationRollup sequencers: who puts transactions in order?Learn what a rollup sequencer does, why a fast acknowledgment differs from settlement, and how ordering, outages and escape paths affect users.3 min · 3 sources
- Ethereum · ExplanationEthereum nodes and RPC: how wallets see the chainUnderstand execution and consensus clients, what an RPC provider tells a wallet, and why running a verifying node differs from staking.3 min · 4 sources
- Ethereum · ExplanationHow to read an Ethereum block explorerRead transaction status, ETH value, token events and gas fees without confusing execution success with safety or inclusion with finality.3 min · 8 sources
- Ethereum · ExplanationEthereum transaction hashes: an identifier, not proof of successUse an Ethereum transaction hash to find a submitted transaction while keeping network identity, inclusion and execution success separate.3 min · 7 sources
- Ethereum · ExplanationEthereum receipts: status, gas used and event logsRead an Ethereum receipt’s status, gas use, logs and block reference without confusing successful execution with final settlement or business success.3 min · 7 sources
- Ethereum · ExplanationReverted Ethereum transactions: failed execution and paid gasUnderstand which effects a reverted Ethereum transaction rolls back, why gas can still be charged and how a caught internal failure differs from top-level failure.3 min · 7 sources
- Ethereum · ExplanationPending Ethereum transactions: what the wallet is waiting forDiagnose a pending Ethereum transaction by checking propagation, sender nonce order, fee conditions and the distinction between a node’s pool and chain state.3 min · 4 sources
- Ethereum · ExplanationSpeeding up or cancelling an Ethereum transactionUnderstand how an Ethereum wallet competes with its own pending transaction using the same nonce, and why a cancel button cannot reverse confirmed execution.3 min · 7 sources
- Ethereum · ExplanationChain IDs: why the same address can exist on different networksUnderstand how chain IDs help separate Ethereum-compatible transaction domains and why the same address can exist on several networks.3 min · 5 sources
- Ethereum · ExplanationEthereum address checksums: what mixed-case letters can detectLearn what EIP-55 mixed-case checksums can detect, what capitalization means and why a correctly checksummed address can still be the wrong recipient.3 min · 3 sources
- Ethereum · ExplanationWei and gwei: converting Ethereum amounts and gas pricesConvert between wei, gwei and ETH and calculate an execution fee without confusing a gas price with the amount transferred.3 min · 7 sources
- Ethereum · ExplanationCalldata: the bytes sent to an Ethereum contractRead Ethereum calldata as transaction input bytes and distinguish it from ETH value, persistent storage and readable function names.3 min · 6 sources
- Ethereum · ExplanationFunction selectors: the first four bytes of a contract callLearn how Ethereum ABI function selectors are derived, why different signatures can collide and what a decoded method label can and cannot prove.3 min · 2 sources
- Ethereum · ExplanationSmart-contract events: logs, indexed fields and their limitsRead Ethereum events as contract-emitted logs, including indexed topics, decoding limits and why a familiar event name does not authenticate a token.3 min · 4 sources
- Ethereum · ExplanationInternal transactions: an explorer label for execution tracesUnderstand an explorer’s internal-transactions tab as a view of nested execution, rather than a list of separately signed Ethereum transactions.3 min · 5 sources
- Ethereum · ExplanationVerified contract source: what verification does and does not proveDistinguish source-code verification from a security audit, including compiler matching, initialization and proxy implementation context.3 min · 2 sources
- Ethereum · ExplanationContract ABIs: the interface used to encode callsLearn how an Ethereum ABI describes functions, arguments, results, errors and events, and why the interface does not guarantee implementation behavior.3 min · 4 sources
- Ethereum · ExplanationContract proxies: one address, replaceable implementationUnderstand Ethereum proxy contracts, implementation addresses and upgrade authority without assuming that a stable address means stable application logic.3 min · 3 sources
- Ethereum · ExplanationDelegatecall: whose code runs, and whose storage changes?Understand why Ethereum delegatecall uses another contract’s code with the caller’s storage and why code selection becomes an authority decision.3 min · 4 sources
- Ethereum · ExplanationCREATE2: predictable contract addresses and their limitsUnderstand deterministic Ethereum contract addresses under CREATE2 and distinguish a precomputed destination from a deployed, trustworthy account.3 min · 4 sources
- Ethereum · ExplanationTyped-data signatures: reading EIP-712 messagesRead Ethereum typed-data signatures by checking the domain, requested action and replay controls, rather than assuming a readable message is harmless.3 min · 2 sources
- Ethereum · ExplanationPermit signatures: authorizing token spending without an approval transactionUnderstand ERC-2612 signed allowances, including spender, amount, nonce and deadline, and why signing without gas can still authorize token spending.3 min · 2 sources
- Ethereum · ExplanationSignature replay: when the same authorization can be used againUnderstand how a valid signature can be reused outside its intended scope and compare transaction nonces, chain domains and application-level replay defenses.3 min · 4 sources
- Ethereum · ExplanationTransaction simulation: useful rehearsal with an uncertain futureUse Ethereum simulation to inspect likely execution at a chosen state while understanding why a successful preview cannot guarantee a later transaction outcome.3 min · 3 sources
- Ethereum · ExplanationNFT metadata: where the name, image and attributes liveSeparate an NFT’s on-chain ownership record from its metadata and media, including optional tokenURI interfaces and mutable hosting dependencies.3 min · 2 sources
- Ethereum · ExplanationSoulbound tokens: transfer restrictions and issuer powersUnderstand non-transferable token designs through ERC-5192 and distinguish locked transfer behavior from trustworthy identity or permanent recovery guarantees.3 min · 2 sources
- Ethereum · ExplanationERC-4626 vaults: assets, shares and conversion previewsRead the ERC-4626 vault interface by distinguishing assets, shares, previews and withdrawal limits, including why standardization does not guarantee safe yield.3 min · 2 sources
- Ethereum · ExplanationEthereum access lists: declaring accounts and storage in advanceUnderstand Ethereum transaction access lists as gas-accounting hints for addresses and storage keys, not permission lists or guaranteed cost reductions.3 min · 2 sources
- Ethereum · ExplanationEthereum state and storage: what contracts rememberDistinguish Ethereum account state, persistent contract storage, execution memory and calldata, with an example of an ERC-20 balance.3 min · 5 sources
- Ethereum · ExplanationBlob fees: a separate fee market for rollup dataUnderstand Ethereum’s separate blob-gas fee component and why lower data publication costs do not imply that rollup users always pay a fixed fee.3 min · 3 sources
- Ethereum · ExplanationSmart-account bundlers: turning user operations into transactionsUnderstand an ERC-4337 bundler’s role in turning user operations into an on-chain transaction, including validation, fees and limits on inclusion promises.3 min · 1 sources
- Ethereum · ExplanationPaymasters: who pays for a smart-account operation?Understand how an ERC-4337 paymaster covers gas under a policy and why gas sponsorship does not mean unlimited free transactions.3 min · 1 sources
- Ethereum · ExplanationSmart-account recovery: replacing access without a seed phraseUnderstand preconfigured smart-account recovery through guardians or delayed signer replacement, including the authority and monitoring trade-offs.3 min · 3 sources
- Ethereum · ExplanationMetaMask password and recovery phrase: which one restores access?Understand which MetaMask credential unlocks an installation, restores a seed-based wallet or participates in social-account recovery.3 min · 3 sources
- Ethereum · ExplanationWhy are accounts missing after restoring MetaMask?Find missing MetaMask accounts after phrase restoration by checking derivation order, import method and the original address.3 min · 3 sources
- Ethereum · ExplanationWhy does an Ethereum token balance not appear in my wallet?Diagnose an absent token balance by separating the wallet address, network, token contract and wallet display list.3 min · 3 sources
- Ethereum · ExplanationUnexpected tokens and NFTs: what does receiving an airdrop mean?Understand why an unexpected airdrop can appear without consent and where interacting with its links or permissions creates risk.3 min · 4 sources
- Ethereum · ExplanationFake wallet websites: how phishing reaches a real Ethereum accountRecognize fake wallet and support websites before recovery phrases, private keys or dangerous authorizations are exposed.3 min · 5 sources
- Ethereum · ExplanationHardware wallets for Ethereum: what the device protectsUnderstand what Ethereum hardware wallets isolate and why verified destinations and understandable signing requests still matter.3 min · 3 sources
- Ethereum · ExplanationEthereum derivation paths: why one seed can show different accountsLearn how derivation paths and account indexes explain different Ethereum addresses when the same recovery phrase is used in different wallets.3 min · 3 sources
- Ethereum · ExplanationWalletConnect sessions: pairing a wallet with an applicationUnderstand WalletConnect pairing, session permissions and later signing requests before treating a connection as authority over assets.3 min · 4 sources
- Ethereum · ExplanationWhat can an Ethereum RPC provider learn about a wallet?Understand the account information revealed by RPC queries and the privacy limits of both public ledgers and self-hosted nodes.3 min · 3 sources
- Ethereum · ExplanationWhy can’t I send my entire ETH balance?See why sending all ETH requires a fee budget and how gas limits, fee caps and actual charges leave small remainders.3 min · 2 sources
- Ethereum · ExplanationWhy won’t an Ethereum app connect to my wallet?Separate a rejected wallet request, missing account permission and unavailable chain from an actual Ethereum transaction failure.3 min · 4 sources
- Ethereum · ExplanationSign-In with Ethereum: what a wallet login provesLearn what an EIP-4361 wallet login authenticates and why domain, nonce and time checks matter when verifying a sign-in message.3 min · 2 sources
- Ethereum · ExplanationWhat is ENS? Names, addresses and the resolver between themUnderstand how ENS names point to addresses and other records without replacing account keys or proving a person’s identity.3 min · 5 sources
- Ethereum · ExplanationRegistering an ENS name: why registration has separate stepsFollow the ENSv1 .eth commit-and-register process and distinguish registration fees, network gas and record configuration.3 min · 3 sources
- Ethereum · ExplanationENS renewal and expiry: what happens when a .eth name runs out?Learn what ENSv1 .eth expiry changes, how its grace period works and why an expired name does not remove wallet access.3 min · 4 sources
- Ethereum · ExplanationENS owner, manager and resolver: who controls which settings?Separate ENS registration ownership, record-management authority and resolver code before transferring or changing a name.3 min · 4 sources
- Ethereum · ExplanationENS primary names: showing a name for your wallet addressUnderstand ENS reverse lookup and the forward-address verification needed before an app displays a primary name.3 min · 2 sources
- Ethereum · ExplanationENS address records: one name, different destinationsCheck the coin and chain context of ENS address records before using a readable name as a payment destination.3 min · 3 sources
- Ethereum · ExplanationENS subnames: what control does a parent name retain?Understand who controls an ENS subname, what parent permissions can do and why wrapped-subname expiry matters.3 min · 3 sources
- Ethereum · ExplanationENS lookalike names and normalization: checking what you resolveLearn why ENS software normalizes names before lookup and why valid Unicode still does not prove a name belongs to the intended person.3 min · 2 sources
- Ethereum · ExplanationWhat happens when you mint an NFT?Distinguish creating an NFT from buying an existing one, and check the contract, recipient, price and actual mint result.3 min · 4 sources
- Ethereum · ExplanationSending an NFT to a contract: why safe transfers can failUnderstand the receiver checks in NFT safe transfers and why they do not verify the human recipient or guarantee recovery.3 min · 2 sources
- Ethereum · ExplanationNFT operator approvals: what does “approve all” allow?Learn how NFT operator permissions differ from individual-token approvals and how to inspect or revoke their scope.3 min · 2 sources
- Ethereum · ExplanationNFT listings and offers: how signatures become marketplace tradesSeparate NFT sale signatures, token approvals and onchain fulfillment using Seaport’s documented order model.3 min · 1 sources
- Ethereum · ExplanationNFT royalties: what ERC-2981 specifies and what it does not enforceUnderstand what ERC-2981 reports, how a royalty amount is calculated and why the standard alone does not enforce payment.3 min · 1 sources
- Ethereum · ExplanationBurning an NFT: which record disappears and what can remain?Distinguish an NFT burn function from sending a token away and understand which ownership and media records remain.3 min · 5 sources
- Ethereum · ExplanationWhy is my NFT missing from a wallet or marketplace display?Diagnose missing NFT thumbnails or ownership displays by checking the network, contract, token ID and current owner.3 min · 3 sources
- Ethereum · ExplanationNFTs and IPFS: a content address is not a storage guaranteeSeparate an NFT’s IPFS content identifier from continued file availability, pinning and the contract’s metadata pointer.3 min · 3 sources
- Ethereum · ExplanationSolo staking Ethereum: what running a validator involvesUnderstand the stake, software and ongoing duties involved in running your own Ethereum validator.3 min · 4 sources
- Ethereum · ExplanationStaking as a service: which keys and duties go to the operator?Compare validator operation, withdrawal control and custody when a provider runs an Ethereum validator for you.3 min · 4 sources
- Ethereum · ExplanationPooled Ethereum staking: sharing a validator and adding dependenciesUnderstand how pools combine smaller ETH contributions and why pool claims, fees and exit routes differ from a personal validator.3 min · 1 sources
- Ethereum · ExplanationValidator signing keys and withdrawal credentials: different powersSeparate a validator’s online signing key from withdrawal credentials and the address controlling its funds.3 min · 4 sources
- Ethereum · ExplanationWhat happens when an Ethereum validator goes offline?Understand missed validator duties, ordinary inactivity penalties and the difference between an outage and a slashable signature.3 min · 4 sources
- Ethereum · ExplanationEthereum client diversity: why software choice affects shared riskLearn why running different Ethereum client implementations reduces correlated failure risk across execution and consensus.3 min · 2 sources
- Ethereum · ExplanationDistributed validators: how several machines share Ethereum signingUnderstand how several machines coordinate one validator with key shares, and what threshold signing does and does not protect.3 min · 2 sources
- Ethereum · ExplanationWhere do Ethereum staking rewards come from?Separate consensus rewards, transaction tips and operating costs when interpreting an Ethereum staking return.3 min · 5 sources
- Ethereum · ExplanationEthereum validator activation: from deposit to active dutiesDistinguish a confirmed staking deposit from a validator becoming eligible, entering the queue and starting duties.3 min · 5 sources
- Ethereum · ExplanationEthereum staking deposits: checking the contract and deposit dataUnderstand what a validator deposit funds, which identifiers matter and why deposit confirmation must be checked against consensus status.3 min · 5 sources
- Ethereum · ExplanationValidator fee recipients: where tips go versus staking withdrawalsUnderstand the execution address used for validator transaction tips and why it is separate from withdrawal credentials.3 min · 3 sources
- Ethereum · ExplanationMoving an Ethereum validator safely: slashing-protection recordsLearn why validator migrations need signing history and why copying a keystore is not a safe active-backup strategy.3 min · 2 sources
- Ethereum · ExplanationEthereum mainnet and testnets: separate networks for separate purposesUnderstand why Ethereum mainnet, public testnets and local development networks have separate balances and purposes.3 min · 1 sources
- Ethereum · ExplanationTest ETH and faucets: practicing without buying mainnet etherLearn what a testnet faucet provides, which address it needs and how to diagnose missing test ETH without exposing wallet secrets.3 min · 3 sources
- Ethereum · ExplanationEthereum slots and missed blocks: why a slot can have no blockSeparate Ethereum’s scheduled slots from actual blocks and see how a missed slot affects elapsed time and block counts.3 min · 2 sources
- Ethereum · ExplanationThe Beacon Chain after the Merge: consensus alongside executionUnderstand the Beacon Chain’s role in Ethereum consensus and what changed when it joined the execution layer at the Merge.3 min · 5 sources
- Ethereum · ExplanationSyncing an Ethereum node: why downloads and verification take timeUnderstand how an Ethereum node catches up, why execution and consensus synchronization differ and when RPC data may still be incomplete.3 min · 2 sources
- Ethereum · ExplanationEthereum archive nodes: asking what an account held in the pastLearn why historical Ethereum state queries need suitable retention and how archive capabilities vary by Geth version and configuration.3 min · 3 sources
- Ethereum · ExplanationEthereum light clients: checking headers without executing every blockUnderstand how Ethereum light clients verify selected data with authenticated headers while doing less work than a full node.3 min · 3 sources
- Ethereum · ExplanationEthereum checkpoints and weak subjectivity: starting from recent historyUnderstand why a new or long-offline Ethereum node needs a recent trusted checkpoint before independently following proof-of-stake consensus.3 min · 1 sources
- Ethereum · ExplanationHow Ethereum upgrades: proposals, client releases and activationFollow the path from an Ethereum proposal to tested client software and an activated network change.3 min · 3 sources
- Ethereum · ExplanationEthereum reorganizations: when a recent block leaves the chosen chainUnderstand why an included Ethereum transaction can change block position before finality and what applications should recheck after a reorganization.3 min · 2 sources
- Ethereum · ExplanationWhat is Base? Its network, execution and Ethereum settlementUnderstand Base’s separate network state, Ethereum data publication and the difference between quick confirmation and withdrawal completion.3 min · 3 sources
- Ethereum · ExplanationWhat is Arbitrum One? Following a Nitro rollup transactionLearn how Arbitrum One uses Nitro rollup execution, Ethereum data publication and separate cross-chain message completion.3 min · 1 sources
- Ethereum · ExplanationWhat is OP Mainnet? The chain, the OP Stack and its settlementUnderstand OP Mainnet’s OP Stack rollup structure and how sequencer inclusion, safe blocks and finalized blocks differ.3 min · 3 sources
- Ethereum · ExplanationWhat is ZKsync Era? Validity proofs and Ethereum application compatibilityUnderstand ZKsync Era’s validity-proof model and why Ethereum tooling compatibility depends on the execution mode and documented differences.3 min · 2 sources
- Ethereum · ExplanationWhat is Starknet? Cairo accounts and validity proofs on EthereumUnderstand Starknet’s validity proofs, Ethereum settlement and native smart-account model before using Ethereum assumptions on another network.3 min · 2 sources
- Ethereum · ExplanationPolygon PoS versus a rollup: different security and bridge assumptionsDistinguish Polygon PoS’s validator and checkpoint model from Ethereum rollup proofs instead of relying on the Polygon brand alone.3 min · 2 sources
- Ethereum · ExplanationArbitrum Nova and AnyTrust: trading a data assumption for lower costsUnderstand how AnyTrust uses a data-availability committee and how that differs from publishing full rollup data on Ethereum.3 min · 1 sources
- Ethereum · ExplanationOP Stack and the Superchain: shared software versus shared guaranteesSeparate OP Stack software from individual networks and understand what a Superchain registry entry does and does not establish.3 min · 2 sources
- Ethereum · ExplanationWhy is my rollup withdrawal still waiting?Locate the unfinished stage of a rollup withdrawal instead of assuming the first L2 receipt means an Ethereum payout.3 min · 3 sources
- Ethereum · ExplanationComparing Ethereum layer 2s: the questions behind a cheap transferCompare Ethereum scaling networks using data location, proof design, operational controls, compatibility and exit conditions.3 min · 8 sources
Stablecoins
Follow the backing, redemption rights, controls, and dependencies behind a price peg.
- Stablecoins · ExplanationWhat is a stablecoin? A target price and the system behind itStablecoins target a reference value using reserves, collateral or other mechanisms. Learn what the peg means and what a token holder actually owns.3 min · 7 sources
- Stablecoins · ExplanationA stablecoin peg is a target; its market price is a tradeWhy a one-dollar stablecoin trades above or below one dollar, how arbitrage helps and why eligibility, fees and liquidity matter.3 min · 5 sources
- Stablecoins · ExplanationCash-backed stablecoins: what sits behind the token?A reserve-backed stablecoin connects an on-chain token to off-chain assets. Understand reserve composition, redemption and the limits of cash-backed labels.3 min · 5 sources
- Stablecoins · ExplanationCrypto-backed stablecoins: debt, collateral and liquidationHow collateralized stablecoins are created, why collateral buffers matter, and how liquidation and oracle failures can affect the system.3 min · 3 sources
- Stablecoins · ExplanationAlgorithmic stablecoins: when the peg depends on incentivesHow supply adjustments and linked tokens can target a stable price, why feedback loops matter, and what the UST record demonstrates.3 min · 3 sources
- Stablecoins · ExplanationSynthetic dollars: a dollar target built from positionsHow a long asset and short derivative can offset price exposure, and why funding, custody and exchange risk remain in synthetic-dollar designs.3 min · 3 sources
- Stablecoins · ExplanationWho can mint or redeem a stablecoin?Holding a token is different from opening an issuer account. Learn how direct minting, redemption, exchange sales and protocol conversions differ.3 min · 6 sources
- Stablecoins · ExplanationHow to read a stablecoin reserve reportMatch reserve assets to obligations at the same date, read the valuation and assurance scope, and distinguish reported backing from immediate liquidity.3 min · 5 sources
- Stablecoins · ExplanationAttestations, audits and proof of reserves answer different questionsRead the subject matter, criteria and time period before relying on an assurance label. Why proof of reserves alone does not establish solvency.3 min · 3 sources
- Stablecoins · ExplanationStablecoin depegging: observe the price, then investigate the causeA depeg can reflect local liquidity, blocked redemption, backing losses or a failed stabilization mechanism. Learn how to distinguish the evidence.3 min · 4 sources
- Stablecoins · ExplanationWhy an on-chain stablecoin can still depend on banksBlockchain transfers, reserve custody and fiat payouts run through different systems. Learn how bank access and settlement can affect a stablecoin.3 min · 5 sources
- Stablecoins · ExplanationStablecoin freezes and issuer controlPrivate keys authorize wallet actions, while token contracts can impose their own restrictions. Distinguish issuer freezes, platform restrictions and protocol powers.3 min · 6 sources
- Stablecoins · ExplanationNative, bridged and wrapped stablecoinsThe same ticker can hide different contracts and exit routes. Learn how native issuance, lock-and-mint bridges and burn-and-mint transfers differ.3 min · 5 sources
- Stablecoins · ExplanationWhere does stablecoin yield come from?Separate a stablecoin from the lending, savings or trading product around it. Trace yield to borrowers, reserve income, derivatives or subsidies.3 min · 9 sources
- Stablecoins · ExplanationTransferring a stablecoin is not redeeming itA transfer changes a token balance; a redemption follows a separate exit process. Learn to distinguish confirmations, exchange sales and bank settlement.3 min · 4 sources
- Stablecoins · ExplanationNon-dollar stablecoins: stable against which currency?A euro stablecoin can maintain its euro target while changing in dollar value. Understand reference currencies, local liquidity and issuer scope.3 min · 3 sources
- Stablecoins · ExplanationWhat is USDC? The token, its reserves and its redemption routeUSDC targets the US dollar using issuer-managed reserves. Distinguish native tokens, holder eligibility, reserve evidence and third-party services.3 min · 6 sources
- Stablecoins · ExplanationWhat is USDT? Tether’s token and the meaning of its reservesUSDT targets one US dollar. Understand Tether’s reserve definition, token issuance, direct redemption conditions and the difference from exchange trading.3 min · 4 sources
- Stablecoins · ExplanationDAI and USDS: connected tokens in the Sky systemDAI and USDS have a documented one-to-one conversion route, while USDS, sUSDS and governance tokens perform different roles. Understand the shared dependencies.3 min · 5 sources
- Stablecoins · ExplanationTokenized money-market funds: a fund share on blockchain railsA tokenized fund share can represent an investment in short-term assets. Understand shareholder rights, income, transfer controls and redemption timing.3 min · 2 sources
- Stablecoins · ExplanationUSDC and USDT: comparing two issuer-backed stablecoinsCompare USDC and USDT through their issuers, redemption terms, reserve disclosures and chain-specific tokens rather than treating either as an identical digital dollar.3 min · 4 sources
- Stablecoins · ExplanationFinding the correct stablecoin contract for a networkIdentify a stablecoin by its network and official contract, distinguishing authentic deployments, bridged versions, imitations and test tokens.3 min · 4 sources
- Stablecoins · ExplanationStablecoin transfer fees: why you may still need the native tokenSeparate network gas, platform withdrawal fees, swap costs and redemption charges when comparing the cost of moving a stablecoin.3 min · 4 sources
- Stablecoins · ExplanationSent a stablecoin on the wrong network: what to checkUnderstand why the same-looking address does not guarantee a stablecoin deposit is supported on another network and what evidence is needed to assess recovery.3 min · 7 sources
- Stablecoins · ExplanationStablecoin market cap: supply times price, not a reserve auditCalculate a stablecoin market-cap measure and understand why it differs from reserves, transaction volume, circulating supply and immediately available redemption liquidity.3 min · 5 sources
- Stablecoins · ExplanationReserve maturity: why cash and a Treasury bill are differentUnderstand why the maturity of stablecoin reserve assets matters for cash availability without treating short-dated assets as an unconditional redemption guarantee.3 min · 3 sources
- Stablecoins · ExplanationSegregated reserves: what separation can and cannot establishRead claims that stablecoin reserves are segregated by asking which assets, accounts, beneficiaries and legal arrangements the disclosure actually describes.3 min · 3 sources
- Stablecoins · ExplanationAre stablecoins covered by US bank-deposit insurance?Distinguish US FDIC-insured bank deposits from stablecoins, reserve investments and balances held through nonbank crypto platforms.3 min · 3 sources
- Stablecoins · ExplanationCircle CCTP: moving native USDC by burning and mintingFollow a native USDC cross-chain transfer through burning, Circle attestation and destination minting, including the separate dependencies at each stage.3 min · 3 sources
- Stablecoins · ExplanationWhat is PYUSD? Issuance, backing and controlsUnderstand PayPal USD through Paxos issuer disclosures, reserve-report scope and the difference between a payment token and a bank account.3 min · 3 sources
- Stablecoins · ExplanationWhat is EURC? A euro peg still carries dollar exchange-rate riskUnderstand Circle’s euro-referenced stablecoin EURC and separate its euro target from exchange-rate changes measured in dollars or another currency.3 min · 2 sources
- Stablecoins · ExplanationWhat is USDe? The synthetic dollar and its hedgeUnderstand Ethena’s synthetic dollar USDe through its backing portfolio, hedging mechanism and disclosed funding, custody and exchange dependencies.3 min · 3 sources
- Stablecoins · ExplanationWhat is sUSDe? A staking receipt, not the same token as USDeUnderstand sUSDe as a share in staked USDe, including reward accrual, cooldown conditions and the distinction between USDe-denominated accounting and dollar safety.3 min · 3 sources
- Stablecoins · ExplanationWhat is sUSDS? Shares in a USDS savings arrangementUnderstand Sky’s savings USDS token as a vault share, including rate accumulation, conversion into USDS and authorized contract controls.3 min · 3 sources
- Stablecoins · ExplanationStablecoin redemption arbitrage: why a peg can still slipFollow the economics of buying a discounted stablecoin for redemption and understand how eligibility, costs, delays and reserve concerns can keep a peg away from target.3 min · 2 sources
- Stablecoins · ExplanationStablecoins vs CBDCs: who issues the money?Compare the issuer, claim and access model behind a stablecoin and a central bank digital currency without assuming either requires a public blockchain.3 min · 4 sources
- Stablecoins · ExplanationStablecoins vs tokenized bank depositsUnderstand how a tokenized commercial-bank deposit differs from a bearer-like stablecoin, including issuer claims, interbank settlement and design variations.3 min · 2 sources
- Stablecoins · ExplanationStablecoins vs Bitcoin: different monetary designsCompare Bitcoin with stablecoins through their target value, issuance rules, payment networks and the parties a holder depends on.3 min · 4 sources
- Stablecoins · ExplanationWhy dollar stablecoins still carry currency riskWork through why a dollar stablecoin can gain or lose value in your home currency even when it stays exactly at its dollar reference.3 min · 2 sources
- Stablecoins · ExplanationStablecoin off-ramps: from tokens to a bank balanceFollow the steps between a stablecoin wallet and spendable bank money, including issuer redemption, market sale, conversion and payout.3 min · 3 sources
- Stablecoins · ExplanationHow stablecoin cross-border payments workTrace a cross-border stablecoin payment from sender funding to recipient payout, keeping token settlement, currency conversion and local access separate.3 min · 3 sources
- Stablecoins · ExplanationAccepting stablecoin payments: what a merchant receivesCompare direct stablecoin wallet payments with a processor that settles to a merchant balance, including fulfillment and refund records.3 min · 6 sources
- Stablecoins · ExplanationHow stablecoin refunds workLearn why a stablecoin refund usually creates a new payment, how processor refunds differ, and what must be checked before returning funds.3 min · 6 sources
- Stablecoins · ExplanationStablecoin payroll: payment rails and wage obligationsSeparate the currency in which compensation is owed from the stablecoin used to deliver it, including recipient access, privacy and payment records.3 min · 4 sources
- Stablecoins · ExplanationReconciling stablecoin payments with invoicesMatch stablecoin transfers to invoices without treating every wallet movement or repeated notification as a new customer payment.3 min · 4 sources
- Stablecoins · ExplanationUSDT TRC-20 vs ERC-20: the network differenceDistinguish USDT on TRON from USDT on Ethereum, including receiving-network support, token identity and the asset used for network costs.3 min · 6 sources
- Stablecoins · ExplanationWhy sending USDT on TRON uses Energy and BandwidthUnderstand the two resources used by TRON token transfers, the TRX fallback and why a displayed USDT balance may not be enough to send.3 min · 3 sources
- Stablecoins · ExplanationUSDC on Solana: token accounts, SOL and transfersRead Solana USDC through its mint, token accounts and transaction fees, without confusing native USDC with bridged or similarly named tokens.3 min · 5 sources
- Stablecoins · ExplanationStablecoin deposit memos and destination tagsUnderstand when a stablecoin deposit needs a memo or destination tag, why an address alone may not identify a customer, and how to handle missing attribution.3 min · 5 sources
- Stablecoins · ExplanationStablecoin sent but not credited: a diagnostic guideDiagnose a stablecoin deposit by separating broadcast, execution, confirmation, token identity and a custodial service’s internal credit.3 min · 7 sources
- Stablecoins · ExplanationHow to identify counterfeit stablecoin tokensCheck whether a token or payment is the real stablecoin claimed, using chain-specific issuer records instead of logos, symbols or displayed wallet values.3 min · 3 sources
- Stablecoins · ExplanationWhat a small stablecoin test transfer can proveUse a small transfer to test a specific receiving route while understanding what it cannot prove about later amounts, access or asset safety.3 min · 4 sources
- Stablecoins · ExplanationMoving stablecoins across chains: bridge or exchange?Compare bridging a stablecoin with depositing and withdrawing through an exchange, focusing on custody, destination tokens and incomplete transfer stages.3 min · 3 sources
- Stablecoins · ExplanationAre stablecoins mined? Minting and network validationSeparate stablecoin issuance from blockchain consensus and understand why an offer to mine USDT is different from ordinary token creation.3 min · 7 sources
- Stablecoins · ExplanationTether authorized vs issued supply: what the labels meanInterpret Tether’s treasury authorization and circulation labels without treating every mint transaction as tokens already entering the market.3 min · 3 sources
- Stablecoins · ExplanationWhat is Ripple USD (RLUSD)?Understand Ripple USD’s dollar reference, reserve disclosures, supported ledgers and the distinction between holding RLUSD and obtaining direct issuer redemption.3 min · 3 sources
- Stablecoins · ExplanationWhat is Global Dollar (USDG)?Learn what Global Dollar represents, which Paxos entities its terms name and why network-partner incentives differ from a return promised to every token holder.3 min · 2 sources
- Stablecoins · ExplanationWhat is Pax Dollar (USDP)?Identify Pax Dollar, its reserve and redemption model, and why a wallet balance differs from an approved account with the issuer.3 min · 3 sources
- Stablecoins · ExplanationWhat is First Digital USD (FDUSD)?Read First Digital USD’s issuer and redemption model using the current product page and its dated white paper, with reserve claims and access limitations kept explicit.3 min · 2 sources
- Stablecoins · ExplanationWhat is crvUSD? Curve’s lending stablecoinUnderstand how Curve’s crvUSD is minted against collateral and how LLAMMA’s gradual conversions differ from a guarantee against liquidation losses.3 min · 2 sources
- Stablecoins · ExplanationWhat is GHO? Aave’s stablecoinUnderstand GHO’s facilitator-based issuance, Aave borrowing relationship and governance-controlled stability mechanisms without assuming a fixed borrowing rate.3 min · 2 sources
- Stablecoins · ExplanationWhat is LUSD? Liquity V1’s stablecoinLearn how Liquity V1 creates LUSD against ETH and why protocol redemption for collateral differs from repaying your own loan or receiving bank dollars.3 min · 3 sources
- Stablecoins · ExplanationWhat is BOLD? Liquity V2’s stablecoinUnderstand Liquity V2’s BOLD stablecoin, collateral branches and user-set borrowing rates, including how redemptions can affect low-rate Troves.3 min · 2 sources
- Stablecoins · ExplanationWhat is frxUSD? Frax USD explainedRead the current Frax USD design through its custodian reserves, minting caps and redemption constraints, without importing assumptions from earlier FRAX models.3 min · 1 sources
- Stablecoins · ExplanationWhat is PAX Gold (PAXG)? Gold tokens vs dollar stablecoinsUnderstand PAXG’s allocated-gold reference and redemption conditions, and why a token backed by gold is not stable in US-dollar terms.3 min · 2 sources
DeFi
Work through swaps, lending, governance, and the assumptions behind financial protocols.
- DeFi · ExplanationWhat is DeFi? Financial applications built from smart contractsUnderstand decentralized finance through swaps, loans and vaults, including the contracts, assets and people each application depends on.3 min · 3 sources
- DeFi · ExplanationConnecting a wallet: account access, signatures and approvalsDistinguish a wallet connection from a signature, token allowance and transaction, and understand what disconnecting a website actually changes.3 min · 3 sources
- DeFi · ExplanationDecentralized exchanges: how a token trade reaches settlementSee how decentralized exchanges quote and settle trades, why an interface differs from its contracts, and which limits a swap transaction enforces.3 min · 7 sources
- DeFi · ExplanationAutomated market makers: trading against a programmed inventoryLearn how an automated market maker exchanges pooled inventory, how its curve changes a quote, and why arbitrage and liquidity providers matter.3 min · 3 sources
- DeFi · ExplanationConstant-product pools: deriving the output from x times yWork through a constant-product swap with and without fees, distinguish effective input from reserves, and understand integer rounding.3 min · 3 sources
- DeFi · ExplanationLiquidity pools: shared inventory with different accounting rulesUnderstand what a liquidity pool holds, how a provider’s claim differs from the original deposit, and why pool size does not guarantee withdrawal.3 min · 4 sources
- DeFi · ExplanationConcentrated liquidity: providing inventory inside a price rangeLearn how a Uniswap v3 liquidity range becomes active or inactive, changes its token composition, and trades capital efficiency for narrower coverage.3 min · 2 sources
- DeFi · ExplanationLiquidity provider positions: what an LP token or NFT representsCompare fungible Uniswap v2 pool shares with individual v3 positions, including inventory claims, accumulated fees and the effect of transfers.3 min · 4 sources
- DeFi · ExplanationImpermanent loss: comparing pool inventory with simply holdingCalculate the difference between holding two assets and providing full-range constant-product liquidity, with explicit fees and model limitations.3 min · 3 sources
- DeFi · ExplanationSlippage and price impact: two reasons a swap rate can differSeparate the price change caused by your trade from execution changes after quoting, and see how minimum output relates to slippage tolerance.3 min · 4 sources
- DeFi · ExplanationSwap routing and aggregators: selecting a path through liquidityLearn how swap routes cross or split between pools, why gas can change the best route, and what an aggregator quote does and does not promise.3 min · 3 sources
- DeFi · ExplanationDeFi arbitrage: why prices converge and differences can remainUnderstand how trades across markets can narrow price differences, why displayed spreads are not profits, and how atomic execution changes risk.3 min · 4 sources
- DeFi · ExplanationMaximal extractable value: the consequences of transaction orderExplore how transaction inclusion and ordering affect DeFi outcomes, including arbitrage, liquidation competition and sandwich trades.3 min · 3 sources
- DeFi · ExplanationBlockchain oracles: getting observations into contract decisionsUnderstand why contracts need external observations, how price-feed timestamps and decimals matter, and where oracle trust enters a DeFi system.3 min · 3 sources
- DeFi · ExplanationDeFi lending pools: supply claims, debt and available liquidityFollow a pooled loan from deposit to repayment, distinguish interest-bearing receipts from debt, and understand collateral and withdrawal limits.3 min · 3 sources
- DeFi · ExplanationUtilization and borrowing rates: pricing a pool’s available fundsCalculate a simple utilization ratio, see why borrowing rates can steepen near full usage, and distinguish annualized rates from realized yield.3 min · 3 sources
- DeFi · ExplanationCollateral and health factors: measuring a loan against its limitsCalculate an Aave-style health factor, distinguish borrowing limits from liquidation thresholds, and see how prices or interest can change a position.3 min · 3 sources
- DeFi · ExplanationDeFi liquidations: exchanging debt repayment for collateralTrace a collateralized loan liquidation, separate eligibility from actual execution, and understand bonuses, close limits and residual bad debt.3 min · 3 sources
- DeFi · ExplanationFlash loans: borrowing that must settle inside one transactionUnderstand a flash loan’s callback and repayment condition, why it does not provide lasting unsecured cash, and how debt-opening variants differ.3 min · 3 sources
- DeFi · ExplanationLiquid staking: a transferable claim on a staking arrangementDistinguish a liquid staking token from native ETH, compare rebasing and exchange-rate accounting, and follow the difference between selling and redeeming.3 min · 3 sources
- DeFi · ExplanationWrapped assets: an interface change or a separate backing claimCompare native-asset wrappers, receipt wrappers and cross-chain representations, and see why a familiar ticker does not identify the backing mechanism.3 min · 4 sources
- DeFi · ExplanationBlockchain bridges: verifying an event across separate systemsFollow lock-and-mint, burn-and-mint and liquidity-based transfers, including message verification, finality and the dependencies behind bridged tokens.3 min · 5 sources
- DeFi · ExplanationYield vaults: shares, strategies and the meaning of redemptionRead a yield vault as an asset-to-share accounting system with a strategy, including preview limits, fees, rounding and inherited dependencies.3 min · 2 sources
- DeFi · ExplanationIncentives and earned fees: identifying where a yield comes fromSeparate trading fees, borrower interest and reward-token subsidies, then compare their units, duration and relationship to a position’s total return.3 min · 4 sources
- DeFi · ExplanationGovernance tokens: voting authority, delegation and its limitsUnderstand how token-based voting assigns authority, why delegation and snapshots matter, and why governance rights do not automatically imply revenue rights.3 min · 3 sources
- DeFi · ExplanationDAOs: how a group makes and executes shared decisionsFollow a decentralized autonomous organization from membership to proposal and execution, and distinguish social decisions from contract-enforced powers.3 min · 3 sources
- DeFi · ExplanationProtocol upgrades and admin powers: who can change whatUnderstand proxy upgrades, roles and timelocks, and learn how to describe a protocol’s concrete powers without assuming all contracts are immutable.3 min · 3 sources
- DeFi · ExplanationSmart-contract audits: reading the scope, findings and limitsLearn what a security audit actually reviewed, how fixes relate to deployed code, and why an audit is evidence about a scope rather than a guarantee.3 min · 3 sources
- DeFi · ExplanationDocumented DeFi exploits: separating mechanism, scope and outcomeRead two primary incident records to distinguish an accounting failure from a compiler defect, keeping affected versions and recovery claims separate.3 min · 3 sources
- DeFi · ExplanationDeFi composability: reusing capabilities and inheriting dependenciesTrace a composed position through tokens, vaults, oracles and borrowing, and see why standards enable integration without certifying the combined system.3 min · 6 sources
- DeFi · ExplanationAPR versus APY: how compounding changes a displayed rateCompare a simple annualized rate with a compounded annual yield, using explicit assumptions about reinvestment, variable rates, fees and reward-token prices.3 min · 5 sources
- DeFi · ExplanationProjected and realized yield: measuring what actually happenedSeparate a displayed yield estimate from an actual holding-period outcome, including reinvestment, reward prices, fees and cash flows.3 min · 5 sources
- DeFi · ExplanationToken emissions: rewards, dilution and the unit of accountUnderstand how token rewards can change a holder’s share of supply and why newly distributed incentives are different from externally earned fees.3 min · 3 sources
- DeFi · ExplanationTotal value locked: what TVL measures and what it missesInterpret total value locked using a provider’s scope, asset prices and double-counting rules, rather than treating TVL as revenue or a safety certificate.3 min · 1 sources
- DeFi · ExplanationMarket cap versus fully diluted valuationCompare circulating market capitalization with fully diluted valuation and understand the supply assumptions hidden behind each token metric.3 min · 3 sources
- DeFi · ExplanationToken unlocks and vesting: when restricted supply becomes availableRead a token vesting schedule by distinguishing allocation, claimability, circulating supply and an actual market sale.3 min · 2 sources
- DeFi · ExplanationLending interest indexes: accruing balances without daily transfersUnderstand how lending protocols use cumulative indexes to update supply and debt balances without sending a separate transaction to every account each second.3 min · 3 sources
- DeFi · ExplanationAave aTokens: the receipt for a supplied assetUnderstand standard Aave aTokens as supply-position accounting, including indexed balances, transfer constraints and the difference between a balance and immediate withdrawal liquidity.3 min · 3 sources
- DeFi · ExplanationVariable debt tokens: tracking a borrower’s growing obligationUnderstand Aave variable-debt tokens as non-transferable borrowing records whose balances include accrued interest, rather than tradeable yield assets.3 min · 5 sources
- DeFi · ExplanationIsolated lending markets: which risks are actually separated?Distinguish a fully separate lending market from Aave’s isolation mode and understand which risks a restricted collateral configuration can and cannot contain.3 min · 4 sources
- DeFi · ExplanationSupply caps: limiting deposits into a lending reserveUnderstand a lending reserve’s supply cap as a limit on additional deposits and distinguish it from available withdrawal liquidity or a guarantee against loss.3 min · 2 sources
- DeFi · ExplanationBorrow caps: limiting debt without guaranteeing liquidityRead a lending reserve’s borrow cap alongside available liquidity and account collateral, without confusing a market-wide limit with a personal credit limit.3 min · 4 sources
- DeFi · ExplanationLTV and liquidation threshold: two different collateral limitsCompare a lending position’s borrowing limit with its liquidation boundary using a clear collateral example and market-specific assumptions.3 min · 4 sources
- DeFi · ExplanationLiquidation bonuses: who receives the discount?Understand the incentive paid to a DeFi liquidator and calculate how it affects collateral removed, without assuming every liquidation restores a position to safety.3 min · 4 sources
- DeFi · ExplanationOracle heartbeats and deviation thresholds: when prices updateUnderstand price-feed heartbeat and deviation triggers, including why a feed still needs timestamp, unit and application-specific freshness checks.3 min · 1 sources
- DeFi · ExplanationTWAP oracles: averaging prices over timeUnderstand time-weighted average prices, distinguish Uniswap v2 and v3 averaging methods and evaluate the trade-off between smoothing and delayed response.3 min · 2 sources
- DeFi · ExplanationSandwich attacks: trading around someone else’s swapUnderstand how transaction ordering around a swap can worsen a trader’s execution, and distinguish minimum-output protection from a guarantee against all MEV.3 min · 4 sources
- DeFi · ExplanationPrivate transaction submission: hiding an order from which audience?Understand what changes when a transaction is sent to a private relay or builder path, including visibility, inclusion policy and fallback assumptions.3 min · 3 sources
- DeFi · ExplanationOn-chain limit orders: price conditions and execution dependenciesUnderstand a crypto limit order as conditional trade authorization, including signed orders, execution incentives, cancellation and the difference from a guaranteed fill.3 min · 3 sources
- DeFi · ExplanationUniswap v2 and v3: full-range versus concentrated liquidityCompare Uniswap v2 full-range liquidity with v3 concentrated positions, including capital placement, fee accounting and time-weighted price oracles.3 min · 2 sources
- DeFi · ExplanationUniswap v4 hooks: custom pool behavior and extra dependenciesUnderstand optional Uniswap v4 hook contracts, their permissions and why a pool’s custom behavior must be examined alongside the core protocol.3 min · 1 sources
- DeFi · ExplanationFee-on-transfer tokens: when the received amount is smallerUnderstand token transfer deductions and why quoted or requested amounts can differ from what an integrating contract actually receives.3 min · 3 sources
- DeFi · ExplanationRebasing tokens: balances can change without a transferUnderstand balances that change through rebasing, distinguish token units from ownership share and examine integration-specific accounting risks.3 min · 3 sources
- DeFi · ExplanationWrapped staked ether: shares instead of a rebasing balanceUnderstand Lido wstETH as a non-rebasing representation of stETH, including conversion rates, market prices and separate withdrawal steps.3 min · 2 sources
- DeFi · ExplanationRestaking: additional services and additional slashing conditionsUnderstand restaking through the pinned EigenLayer v1.5.0 architecture, including delegation, service allocation, rewards and additional slashing exposure.3 min · 1 sources
- DeFi · ExplanationWithdrawal queues: a claim today and settlement laterUnderstand asynchronous DeFi withdrawals using Lido’s request, finalization and claim process, including receipt ownership and continuing risk while waiting.3 min · 2 sources
- DeFi · ExplanationVault share price: converting between shares and assetsInterpret vault shares as claims on underlying assets, distinguish conversion estimates from executable previews and account for fees, rounding and limits.3 min · 2 sources
- DeFi · ExplanationVault inflation attacks: donations, rounding and first depositsUnderstand how donations and share rounding can harm deposits into vulnerable vaults, and why the exact implementation and defenses matter.3 min · 2 sources
- DeFi · ExplanationGovernance delegation: voting power without transferring the tokensUnderstand delegated voting power in OpenZeppelin-style governance, including self-delegation, historical snapshots and the distinction from spending authority.3 min · 2 sources
- DeFi · ExplanationGovernance timelocks: a delay, not an automatic vetoUnderstand governance execution delays, distinguish voting from scheduling and execution, and inspect which privileged actions a timelock actually controls.3 min · 1 sources
- DeFi · ExplanationExact-input and exact-output swaps: which amount is fixed?Compare a fixed spending amount with a fixed receiving amount, including the transaction bounds and treatment of unused input.3 min · 1 sources
- DeFi · ExplanationDEX swap costs: separating pool fees, gas and interface chargesSeparate the costs inside a DEX quote from the network fee and any service charge, without counting the same pool fee twice.3 min · 5 sources
- DeFi · ExplanationSwap deadlines: why an old quote can stop executingUnderstand why a swap can fail after waiting, and why changing the deadline does not repair an outdated price limit.3 min · 3 sources
- DeFi · ExplanationInsufficient DEX liquidity: no route, poor quote or unavailable inventory?Diagnose missing or weak swap routes by distinguishing supported assets, active inventory and executable size.3 min · 4 sources
- DeFi · ExplanationIdentifying a DEX pool: token pair, network, fee and contractIdentify one concrete pool and avoid confusing similar tickers, networks or fee tiers with the same market.3 min · 4 sources
- DeFi · ExplanationCollecting LP fees: claiming earnings versus increasing a positionDistinguish uncollected Uniswap v3 fees from active liquidity, and understand the extra work needed for reinvestment.3 min · 5 sources
- DeFi · ExplanationAn out-of-range liquidity position: what changes and what remains?Understand a concentrated position after price leaves its interval, including single-asset inventory, fee earning and re-entry.3 min · 4 sources
- DeFi · ExplanationRemoving liquidity versus selling tokens: different exit actionsFollow an LP exit from decreased liquidity to received tokens and, only if chosen, a later sale.3 min · 5 sources
- DeFi · ExplanationLP break-even fees: when trading revenue covers the holding shortfallCalculate the earnings required to match a holding benchmark, keeping fees and other cash flows from being counted twice.3 min · 3 sources
- DeFi · ExplanationWeighted liquidity pools: why every AMM is not fifty-fiftyUnderstand how unequal pool weights change inventory and spot-price calculations without turning a pool into a guaranteed portfolio.3 min · 2 sources
- DeFi · ExplanationStableSwap pools: low slippage near balance and risk away from itUnderstand the curve behind low-slippage stable-asset swaps and why that curve does not guarantee a peg or safe withdrawal.3 min · 1 sources
- DeFi · ExplanationSingle-sided liquidity deposits: why adding one token can have a costExplain why adding only one pool asset differs from a proportional deposit, even when the interface uses a single action.3 min · 2 sources
- DeFi · ExplanationBatch-auction swaps: how orders can settle togetherFollow matching orders and external liquidity through a CoW-style batch without assuming every order receives a guaranteed fill.3 min · 2 sources
- DeFi · ExplanationIntent-based swaps: authorizing an outcome for solvers to executeUnderstand the outcome a signed swap intent authorizes and the work delegated to a solver or filler.3 min · 3 sources
- DeFi · ExplanationDutch-auction swap orders: a price that changes until someone fillsRead a time-dependent swap price and understand why the final fill depends on competition and execution timing.3 min · 1 sources
- DeFi · ExplanationOrder-book depth and spread: reading the liquidity behind a quoteCalculate the spread and average execution from discrete orders, and distinguish displayed depth from a completed trade.3 min · 2 sources
- DeFi · ExplanationOrder time in force: GTC, IOC and fill-or-killCompare persistent orders, immediate partial execution and all-or-nothing immediate execution without assuming every venue supports every policy.3 min · 3 sources
- DeFi · ExplanationPost-only orders: requiring a maker order instead of an immediate fillExplain why a maker-only order can be rejected, and why resting successfully does not guarantee a trade.3 min · 3 sources
- DeFi · ExplanationReduce-only orders: closing exposure without reversing itUnderstand how a closing order can avoid opening a new opposite position, including rejection and resizing behavior.3 min · 2 sources
- DeFi · ExplanationStop-market and stop-limit orders: trigger price is not execution priceSeparate a stop trigger from the order sent after it, and understand the trade-off between price bounds and execution uncertainty.3 min · 2 sources
- DeFi · ExplanationTake-profit orders: triggers, partial fills and an open remainderRead a take-profit trigger, choose between a market-style and limited exit, and track the position left after a fill.3 min · 3 sources
- DeFi · ExplanationPerpetual futures: price exposure without owning the underlying tokenUnderstand perpetual contract exposure, funding and margin without confusing a derivatives position with owning the token.3 min · 3 sources
- DeFi · ExplanationPerpetual funding payments: who pays whom, and on what amount?Calculate a funding payment from notional and a period rate, and avoid confusing a quoted annualization with earned return.3 min · 2 sources
- DeFi · ExplanationMark, index and last price: different numbers with different jobsDistinguish a recent trade, an external reference and a risk valuation when reading derivatives screens and liquidation notices.3 min · 4 sources
- DeFi · ExplanationLeverage, margin and notional: the exposure behind a depositSeparate position exposure from the collateral supporting it and calculate how price changes affect equity.3 min · 3 sources
- DeFi · ExplanationCross and isolated margin: which collateral supports a position?Understand which collateral supports which positions and why an isolation boundary must be read from the protocol rules.3 min · 2 sources
- DeFi · ExplanationInitial and maintenance margin: opening a position versus keeping itExplain why opening a position and keeping it open use different tests, and why liquidation can occur while equity remains positive.3 min · 2 sources
- DeFi · ExplanationRealized and unrealized trading P&L: what changed in the account?Reconcile marked exposure, completed trades, funding and settlement without double-counting the same gain.3 min · 4 sources
- DeFi · ExplanationOpen interest versus volume: outstanding contracts and completed tradesDistinguish outstanding derivative contracts from trading turnover and avoid reading either measure as a directional prediction.3 min · 1 sources
- DeFi · ExplanationPerpetual insurance funds and auto-deleveraging: allocating a shortfallUnderstand a derivatives backstop, its limits and why profitable positions can be reduced during a market shortfall.3 min · 4 sources
- DeFi · ExplanationCrypto calls and puts: a right, a premium and a payoffUnderstand calls, puts, strike prices and expiry, with a clear distinction between buying an option and writing one.3 min · 2 sources
- DeFi · ExplanationOption premiums: intrinsic value, time value and the break-even priceBreak an option price into current exercise value and extra premium, then distinguish that price from the buyer’s eventual profit.3 min · 3 sources
- DeFi · ExplanationImplied volatility: what an option price says, and what it does notRead implied volatility as a model-based interpretation of price, not a prediction of direction or a guaranteed future move.3 min · 3 sources
- DeFi · ExplanationOption settlement currency: why a dollar payoff can become a token amountIdentify what an option pays, in which asset, and why a dollar strike does not imply a dollar cash balance at expiry.3 min · 2 sources
- DeFi · ExplanationSpot-perpetual basis risk: why a hedged position can still loseUnderstand why equal long-spot and short-perpetual quantities can still lose money or be liquidated.3 min · 3 sources
- DeFi · ExplanationWithdrawing lending supply: liquidity, collateral and transaction limitsDiagnose why a lending balance can exceed the amount immediately available to withdraw.3 min · 4 sources
- DeFi · ExplanationTurning collateral on or off: supply balance is not borrowing powerSeparate supplying an asset from enabling it as borrowing collateral, and understand why disabling it can be blocked.3 min · 4 sources
- DeFi · ExplanationRepaying a DeFi loan: debt asset, accrued interest and the final balanceFollow a normal lending repayment, including token permissions, interest accrual and checking that the debt actually reaches zero.3 min · 4 sources
- DeFi · ExplanationRepaying with collateral: the swap inside the repaymentUnderstand how a lending adapter sells supplied collateral to reduce debt, and why both sides of the position must be measured.3 min · 3 sources
- DeFi · ExplanationCollateral swaps: replacing backing while keeping a loan openExplain replacing the asset backing a loan and why equal market value can still produce a different borrowing risk.3 min · 4 sources
- DeFi · ExplanationDeFi debt refinancing: changing a debt asset or lending marketUnderstand changing a loan’s debt asset, including swap costs and the new price exposure created by refinancing.3 min · 3 sources
- DeFi · ExplanationAave efficiency mode: correlated assets and a narrower risk assumptionUnderstand Aave’s category-specific collateral settings and why higher borrowing capacity still depends on asset relationships.3 min · 2 sources
- DeFi · ExplanationCollateral looping: gross exposure hidden inside repeated depositsSee how repeated borrowing and re-supplying grows gross exposure without creating an equal amount of new net equity.3 min · 4 sources
- DeFi · ExplanationLending liquidity versus solvency: can assets be withdrawn or recovered?Distinguish unavailable cash from an asset shortfall when a lending withdrawal fails.3 min · 4 sources
- DeFi · ExplanationBad debt socialization: how a lending loss reaches suppliersUnderstand how unrecoverable lending losses can reduce depositor claims, including the timing of recognition.3 min · 2 sources
- DeFi · ExplanationFixed and variable DeFi borrowing: which risk does a fixed rate remove?Compare rates that change over time with fixed-term obligations, without treating fixed interest as fixed total risk.3 min · 2 sources
- DeFi · ExplanationPrincipal and yield tokens: separating a yield-bearing claimUnderstand separating a principal claim from future yield and why the accounting asset and maturity matter.3 min · 3 sources
- DeFi · ExplanationVault curators and allocators: who chooses the lending exposure?Identify who selects a vault’s risks, who moves its funds and who can stop pending changes.3 min · 2 sources
- DeFi · ExplanationVault management and performance fees: how shares can pay the managerDistinguish a fee on managed assets from a fee on earned interest, including how minting shares affects depositors.3 min · 2 sources
- DeFi · ExplanationDoes supplied collateral earn interest? Read the market accountingFind out whether collateral earns lending interest, retains its own token yield, or does neither in a particular market.3 min · 5 sources
- DeFi · ExplanationProtocol backstop staking: rewards paid for absorbing a defined lossUnderstand rewards for absorbing protocol losses and how backstop staking differs from ordinary lending or validator staking.3 min · 1 sources
- DeFi · ExplanationProtocol pauses and reserve freezes: which actions still work?Interpret a paused or frozen lending reserve by looking at the actions the control actually disables.3 min · 3 sources
- DeFi · ExplanationBug bounties and audits: different security evidence and incentivesRead a security audit and a bounty program as different forms of evidence, each with a scope and limitations.3 min · 4 sources
- DeFi · ExplanationGovernance quorum and proposal thresholds: two different gatesDistinguish the votes needed to create a proposal, the participation needed for quorum and the support needed to pass it.3 min · 2 sources
- DeFi · ExplanationOff-chain votes and on-chain execution: following the authority chainFollow a community vote from signed messages to the separate authority that can change contracts or move treasury funds.3 min · 4 sources
- DeFi · ExplanationDAO treasury runway: separating a token valuation from spendable fundsEstimate how long a DAO can fund spending while making cash availability, revenue assumptions and internal transfers explicit.3 min · 2 sources
- DeFi · ExplanationBorrowed governance power: what snapshots can and cannot preventUnderstand temporary voting power and why snapshots, delays and execution controls address different governance risks.3 min · 3 sources
- DeFi · ExplanationLiquidity locks and burned LP tokens: what the claim actually provesUnderstand what locking or making LP receipts inaccessible can restrict, and what it leaves outside that protection.3 min · 3 sources
- DeFi · ExplanationDeFi cover: covered events, exclusions and the claims processRead a DeFi cover product’s event, amount, period and claim rules before treating it as protection for a loss.3 min · 3 sources
- DeFi · ExplanationRug pulls and protocol exploits: different mechanisms behind a lossDistinguish insider deception, misuse of contract permissions and software vulnerabilities when reading about a DeFi loss.3 min · 7 sources
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