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Degrees of Satoshi / Bitcoin history

The mainnet record

1976—2025

A history
of Bitcoin

How a proposal for peer-to-peer cash became a network, a market, a governance problem and an object of state policy.

Twenty-six events are reconstructed from software, blocks, mailing-list posts, court records, laws and official announcements—with decoded transactions, protocol code, price and halving data, and adoption ledgers placed beside the history they explain.

· · Editorial review: Degrees of Satoshi (internal) · Reviewed · Corrections

26 sourced events14 dossiers · visible source registersEdition 1.4 · CSV, JSON and code

Raw hexadecimal data from Bitcoin's genesis block, including the Times newspaper headline embedded by Satoshi Nakamoto
Block 0, rendered as raw data. The newspaper headline embedded in Bitcoin’s first block is legible at right. Bitcoin software / MikeG001 · public-domain and MIT-licensed material · Wikimedia Commons

Reference coordinates

Six dates that orient Bitcoin history.

A fast, source-linked route from the white paper to the fourth halving. Each coordinate opens the dated record, its technical locator and the evidence used to verify it.

  1. White paper announced Nine-page proposal · peer-to-peer cash
  2. The chain begins Height 0 · nominal subsidy 50 BTC
  3. First recognized peer transfer Height 170 · 10 BTC to Hal Finney
  4. SegWit activates Height 481,824 · BIP 141
  5. Taproot activates Height 709,632 · BIP 341
  6. Fourth halving Height 840,000 · subsidy 3.125 BTC

Publication index

Choose your way into the record.

Read the history in sequence, investigate one contested subject, or take the underlying source catalog into your own work. Every path returns to the same dated record.

Historical phase 01

Reference pointPRE-CHAIN
FOUNDATIONSRecords 01—02

1976—2008

Ideas before the network

Bitcoin did not invent cryptography, digital signatures or proof-of-work. Its breakthrough was arranging known components so that strangers could agree on one payment history without appointing a central ledger keeper.

REC 01Pre-chainPapers / proposals

Cryptographic foundations

The parts existed before the system.

Digital information is easy to copy. That is useful for communication and disastrous for money: if the same unit can be spent twice, somebody must decide which payment came first. Early electronic-cash systems usually solved this with a bank, issuer or registrar that maintained the authoritative record.

Several ideas weakened that dependence. Public-key cryptography made it possible to prove authority with a digital signature. Haber and Stornetta described linked timestamps that made later alteration evident. Adam Back’s Hashcash attached computational cost to messages. Wei Dai’s b-money proposed a network in which participants collectively kept accounts. These were antecedents, not earlier versions of Bitcoin; none combined open participation, a single ordered ledger and an incentive system in the same way.

REC 02ProtocolMailing list / white paper

The proposal

A nine-page paper proposes electronic cash without a trusted third party.

A message signed “Satoshi Nakamoto” arrived on the Cryptography Mailing List with a link to Bitcoin: A Peer-to-Peer Electronic Cash System. Its central proposal was a public timestamp chain secured by proof-of-work. Transactions would be broadcast to peers; miners would order them into blocks; nodes would accept the valid history backed by the greatest cumulative work.

The design joined security to economics. The paper proposed that a winning miner could claim newly issued bitcoin and transaction fees, and anticipated a transition toward fee-funded incentives after predetermined issuance entered circulation. The released software made the concrete schedule inspectable: an initial 50 BTC subsidy, a 210,000-block halving interval and deterministic reductions. A difficulty adjustment aimed to keep block production near a ten-minute average as computing power changed.

The paper appeared during the global financial crisis, but the document itself is technical rather than a complete political manifesto. Later events—and the message embedded in block 0—would make that setting impossible to ignore.

The title, author line and abstract of Bitcoin: A Peer-to-Peer Electronic Cash System
White paper / 2008. The title and abstract distributed to the Cryptography Mailing List. Satoshi Nakamoto · facsimile via Wikimedia Commons
What changed

A problem previously handled by an institution had been reframed as a public competition governed by verifiable rules.

Historical phase 02

Protocol anchorGENESIS
HEIGHT 0Records 03—07

2009—2011

A network learns to become money

A specification is not a network, and a token is not automatically money. The first years were a sequence of social and technical bootstrapping events: peers joined, value was tested, a critical bug was repaired and the creator disappeared.

REC 03On-chainHEIGHT 0 / GENESIS BLOCK

The ledger begins

The genesis block fixes a starting point.

Bitcoin’s first block established the reference point from which every later block descends. Its header records a UTC timestamp of 18:15:05. Inside the coinbase data, Satoshi placed a headline from that day’s Times: “Chancellor on brink of second bailout for banks.” The headline proves the block could not have been created before the newspaper appeared; it also tied Bitcoin’s beginning to the banking-crisis era without conclusively explaining every motive behind the project.

The block specifies a 50 BTC subsidy, although its output cannot be spent because of how the genesis block is hard-coded. More important than the nominal reward was the chain it began: each accepted block would reference its predecessor, turning any attempted historical rewrite into a growing proof-of-work problem.

REC 04Network launchHEIGHT 170 / TX f4184f…9e16

Release 0.1

Independent peers turn code into a network.

Satoshi announced the first public software release on 8 January; surviving code archives catalogue v0.1.0 under 9 January. Early users ran both wallet and node functions on ordinary computers, relaying transactions, checking signatures and competing to mine blocks with CPUs. Four days after the announcement, block 170 recorded a 10 BTC transfer from Satoshi to cryptographer Hal Finney.

The transfer mattered because a second participant had independently received and validated state from the network. Bitcoin was no longer only a paper or a database maintained by its author. It had begun the difficult process of bootstrapping shared rules among machines controlled by different people.

Data 01Transaction f4184f…9e16

Bitcoin spends outputs; it does not edit an account balance.

Fee
0 sat
Serialized size
275 bytes
Weight today
1,100 WU
Confirmed
block 170
Confirmed 12 January 2009 at 03:30:25 UTC. The 50 BTC input disappears from the unspent-output set and is replaced by two new outputs. Inspect the transaction
Bitcoin-Qt version 0.5.2 running on Windows 7, showing its overview, balance and transaction controls
Retrospective software view / 2012. Wallet, node and network status in one desktop application. Bitcoin developers · MIT licence · Wikimedia Commons
REC 05Market5,050 BTC / $5.02 → 10,000 BTC / two pizzas

Early price discovery

Direct trades make exchange value visible.

On 12 October 2009, early contributor Martti Malmi sold 5,050 BTC to NewLibertyStandard for a $5.02 PayPal payment—the earliest known bitcoin-for-fiat sale. The blockchain records the 5,050 BTC transfer; Malmi’s later first-person account identifies the counterparty and off-chain dollar payment.

On 22 May 2010, programmer Laszlo Hanyecz reported trading 10,000 BTC for the delivery of two pizzas. It was not necessarily the first exchange involving bitcoin, but it became the first widely documented purchase of physical goods with it. Together, the negotiations showed that bitcoin could acquire exchange value without a central price setter.

REC 06ConsensusINCIDENT AT HEIGHT 74,638 / PATCH 76793dc

Value overflow

A critical bug reveals that consensus is still software.

A malformed transaction exploited an arithmetic overflow and created outputs totaling more than 184 billion BTC—far beyond the intended supply. Developers released a fix within hours. As upgraded participants accumulated more work on the corrected history, nodes abandoned the chain containing the invalid creation.

The incident is essential to understanding early Bitcoin. The monetary limit was an intended rule, but the code enforcing it contained a defect. Recovery required people to diagnose the problem, publish software and coordinate adoption. The episode showed both fallibility and a capacity for rapid repair while the network was still small.

REC 07GovernanceEmail archive / BIP 1

The creator withdraws

Bitcoin continues without Satoshi’s public direction.

In one of the final known messages, Satoshi told developer Mike Hearn that the project was “in good hands with Gavin and everyone.” Responsibility for maintenance and discussion had already begun to spread among contributors. Satoshi’s exit removed a uniquely authoritative voice but did not remove the need for coordination.

Bitcoin Improvement Proposals, or BIPs, became the durable format for documenting substantial ideas. A BIP can specify a change and explain its rationale; it is not legislation. Authors still need to persuade developers, businesses, miners and users, and consensus changes only become effective when software enforcing them is actually adopted.

Editorial plate 01Conceptual model / network formation

Editorial atlas showing a gold sequence of linked Bitcoin blocks expanding into a blue peer-to-peer network
The chain becomes a network. Linked block headers preserve order; independent peers relay and validate the same candidate history under shared rules. Conceptual editorial visualization—not a documentary image · Degrees of Satoshi · Origin evidence dossier
What changed

Bitcoin had acquired peers, exchange value, a repair history and a development process that no longer depended on its pseudonymous author.

Historical phase 03

Protocol anchorHALVING I
HEIGHT 210,000Records 08—13

2012—2016

Markets, mining and custody

Exchanges, hosted wallets, mining pools and specialized hardware made Bitcoin more usable and more secure. They also reintroduced intermediaries whose failure could harm users even when the ledger continued to operate exactly as designed.

REC 08IssuanceHEIGHT 210,000 / MAX SUBSIDY 50 → 25 BTC

First halving

The subsidy falls from 50 BTC to 25 BTC.

After 210,000 blocks, the issuance rule reduced the maximum subsidy available to a miner by half. No committee announced a new rate. Nodes running compatible rules simply rejected any block that claimed more than 25 new BTC after the boundary.

A halving does not mechanically set bitcoin’s market price, nor does it guarantee a specific number of blocks each day. It lowers subsidy revenue per valid block and increases the long-run importance of transaction fees to the security budget. The calendar date is an outcome of irregular block times; the height is the consensus trigger.

REC 09ConsensusBIP 50 / BITCOIN 0.7–0.8

Accidental chain split

Two software generations temporarily disagree.

A block accepted by Bitcoin 0.8 nodes exceeded an undocumented database constraint in older 0.7 software. For several hours, the network built two incompatible histories. Developers and mining-pool operators coordinated a temporary return to the older branch, allowing the network to converge while a safer upgrade path was prepared.

The post-mortem became a landmark governance document. It showed that compatibility assumptions can become consensus rules in practice, even when nobody intended them to be. It also showed the role of social communication during an emergency: proof-of-work selects among histories that nodes consider valid, but software determines validity.

REC 10Law & policyFIN-2013-G001

United States guidance

Regulators distinguish users from money transmitters.

The U.S. Financial Crimes Enforcement Network issued guidance for “decentralized virtual currencies.” A person using virtual currency to buy goods or services was not treated as a money-services business merely for that use. Administrators or exchangers accepting and transmitting value could, depending on their activity, be money transmitters subject to registration and anti-money-laundering obligations.

The distinction helped define the legal perimeter around exchanges and payment businesses. Regulation did not attach to the open-source protocol in the same way it attached to companies exchanging bitcoin for sovereign currency or holding it for customers.

REC 11Law & policyDOJ PRESS RELEASE

Silk Road

A seizure places Bitcoin inside a major criminal case.

U.S. authorities arrested Silk Road operator Ross Ulbricht and seized infrastructure associated with the online market. Later that month, prosecutors announced the seizure of additional bitcoin controlled through keys obtained in the case. The event brought intense attention to bitcoin’s use in illicit commerce.

Bitcoin addresses are pseudonyms, not names, but the ledger is public. Transactions can be followed while investigative records, exchange accounts, operational mistakes or seized devices connect some addresses to real people. The case did not show that every user is identifiable from the blockchain alone; it showed how a permanent public record can become one source of evidence among many.

REC 12CustodyCivil rehabilitation / Japan

Mt. Gox

The dominant exchange collapses; the distinction between bitcoin and an IOU becomes unavoidable.

Mt. Gox repurposed a domain whose name originated with a planned Magic: The Gathering Online Exchange, then became the most important venue for bitcoin trading. After suspending withdrawals and taking its website offline, the company applied for Japanese civil rehabilitation, reporting enormous bitcoin and cash shortfalls. Its initial figures changed as assets were later located and investigations continued, but the customer damage was profound.

The protocol did not fail, yet that fact offered little comfort to people who had lost access to funds. Bitcoin held in a self-controlled address is spendable with the corresponding private key. A balance shown by a custodial exchange is a contractual claim: the exchange controls the on-chain coins and owes the customer. Mt. Gox made the difference between those two forms of exposure legible to an entire market.

Data 02Company-reported holdings · March 2014

From 850,000 BTC reported lost to 650,000 BTC still estimated missing.

≈850,000 BTCinitially reported lost
These were Mt. Gox’s own provisional figures, not a final forensic accounting. Locating an old wallet changed the estimate; it did not restore customers’ control. 20 March announcement
Logarithmic chart of the bitcoin to US dollar exchange rate from 2011 to 2019, using Mt. Gox and Bitstamp data
Retrospective market series / 2011—2019. A log-scale record of dollar exchange rates. Mt. Gox supplies the early series; Bitstamp continues it after the exchange failed. Public exchange data · public domain · Wikimedia Commons
A dark industrial hall lined with rows of cryptocurrency mining machines and green status lights
Mining infrastructure / 2014. Mining moved from home CPUs to GPUs, pools and specialized hardware. Industrial scale raised the cost of attacking the chain while concentrating access to efficient machines and energy. Photograph: Marko Ahtisaari · CC BY 2.0 · Wikimedia Commons
REC 13IssuanceHEIGHT 420,000 / MAX SUBSIDY 25 → 12.5 BTC

Second halving

The subsidy falls again, to 12.5 BTC.

Another 210,000-block interval completed and nodes began enforcing the next reward limit. By this point, mining was an industrial business and exchanges served a global market. The same issuance rule that had operated among hobbyists now constrained a much larger economy.

The halving also sharpened the economic question that recurs in every era: as subsidy revenue declines, can fees provide enough incentive to secure the network? Bitcoin’s design answers the supply question deterministically; the future market for block space remains an economic outcome.

What changed

Bitcoin was no longer only peer-to-peer software. It had an industrial supply chain, regulated gateways and custodians whose incentives and failures shaped the experience of using it.

Historical phase 04

Protocol anchorSEGWIT ACTIVATION
HEIGHT 481,824Records 14—18

2015—2020

Consensus under pressure

Demand for limited block space turned a capacity question into a governance crisis. The disagreement exposed competing priorities: cheap on-chain transactions, inexpensive independent verification, backward compatibility and authority over the rules themselves.

REC 14ConsensusBIP 141 / HEIGHT 481,824

The scaling conflict

One dispute produces a protocol upgrade, a new chain and a lasting argument.

Bitcoin’s then-existing one-megabyte serialized block limit constrained how much transaction data could be confirmed at once. Advocates of larger blocks emphasized throughput and lower on-chain fees. Opponents argued that continually increasing bandwidth, storage and validation requirements would make it harder for ordinary users to run independent nodes, weakening the system’s ability to resist invalid rule changes.

Segregated Witness proposed a backward-compatible restructuring: signature data was committed separately and block weight replaced the old byte-only limit. The change increased effective capacity and fixed involuntary transaction malleability, an obstacle to reliable payment channels. Activation stalled amid disagreement about signalling and authority. BIP 148 set 1 August 2017 as the enforcement date for a proposed user-activated soft fork. That pressure—later commemorated by some supporters as “Bitcoin Independence Day”—and miner coordination through BIP 91 helped bring SegWit to activation at block 481,824 on 24 August.

The dispute did not end in consensus. On 1 August, Bitcoin Cash split into an incompatible chain with larger blocks. A separate SegWit2x plan was later cancelled. The result was both technical and constitutional: competing communities could preserve different rules, but neither miners, developers nor businesses alone could make every user follow them.

Editorial plate 02Conceptual model / consensus divergence

Editorial atlas showing one Bitcoin chain separating into gold and blue networks during a consensus dispute
A rule split can create two durable histories. In 2017, incompatible software rules separated Bitcoin and Bitcoin Cash; miners, nodes, businesses and users then coordinated around distinct networks. Conceptual editorial visualization—not a documentary image · Degrees of Satoshi · Block size war evidence dossier
REC 15Second layerWHITE PAPER / LND 0.4-BETA

Lightning Network

Payment channels move repeated activity away from the base layer.

Lightning participants lock bitcoin into an on-chain channel, exchange updated balances off-chain and retain the ability to enforce the latest valid state on-chain. A network of channels can route payments between people who do not share a direct channel, enabling fast, small transfers without recording every balance update in a block.

SegWit’s malleability fix made dependable unconfirmed transaction chains practical. On 15 March 2018, Lightning Labs released lnd 0.4-beta, its first Lightning beta with Bitcoin mainnet support. It was an implementation milestone for developers and technical users, not a single network-wide activation. Channels still require liquidity and monitoring; routing can fail; and custodial services can reintroduce trust.

REC 16MarketCME / 18 DEC 2017

Regulated derivatives

Bitcoin price risk enters a major futures venue.

CME launched cash-settled bitcoin futures for the 18 December trade date, shortly after Cboe introduced its own contract. The products allowed professional participants to hedge or take a view on bitcoin’s dollar price within regulated derivatives markets.

Cash settlement is the key distinction: no bitcoin needs to move on-chain when the contract settles. The milestone expanded financial exposure to bitcoin without expanding direct ownership of private keys, a pattern that would become even more important with later exchange-traded products.

REC 17IssuanceHEIGHT 630,000 / MAX SUBSIDY 12.5 → 6.25 BTC

Third halving

The subsidy falls to 6.25 BTC.

Bitcoin entered its fourth issuance era. At the protocol’s target pace of 144 blocks per day, expected new issuance fell from roughly 1,800 to 900 BTC per day. Actual daily issuance varies because actual block production varies.

By then, a halving was simultaneously a consensus boundary, a stress test for mining economics and a recurring cultural event. The rule itself remained simple; the effects on hash rate, fees and markets depended on participants’ costs and expectations.

REC 18Corporate treasurySEC 8-K / 21,454 BTC

Corporate treasury

A public company makes bitcoin a primary reserve asset.

MicroStrategy disclosed that it had purchased 21,454 BTC for $250 million and adopted bitcoin as a primary treasury reserve asset. The company framed the decision as a response to its view of long-term risks to cash; that rationale was a corporate judgment, not a property guaranteed by the protocol.

Public companies had held or accepted bitcoin before, but the scale and explicit treasury policy made this a bridge to a new institutional narrative: bitcoin as a balance-sheet asset. The allocation did not remain a one-time cash decision. In early 2021, the company added a strategy of acquiring and holding bitcoin with proceeds from capital raises.

By 31 December 2025, Strategy Inc.—the company’s name after MicroStrategy’s 2025 rebrand, still traded as MSTR—reported 672,500 BTC acquired for $50.435 billion, about 31.3 times the initial disclosed holding. Purchases increasingly relied on common-stock at-the-market programs, convertible and secured debt, and preferred equity rather than software cash alone.

That financing model is part of the history. Aggregate bitcoin can rise while diluted shares, debt, preferred claims and cash obligations also rise. An MSTR shareholder owns a corporate security—not a redeemable, pro-rata interest in the company’s bitcoin or the private keys controlling it.

Data 03MSTR / SEC filings · approximate BTC held

How MicroStrategy’s bitcoin treasury became a capital-markets strategy.

  1. 21,454initial disclosure
  2. 124,391year end
  3. 132,500year end
  4. 189,150year end
  5. 447,470year end
  6. 672,500year end
Initial disclosure
21,454 BTC · $250.0m
31 Dec 2025
672,500 BTC · $50.435bn original cost
Scale change
31.3× the initial disclosed holding

How the acquisition engine changed

  1. 2020Excess cashInitial balance-sheet allocation
  2. 2020—24DebtConvertibles and secured borrowing
  3. 2021—25Common equityAt-the-market share programs
  4. 2025Preferred equityDividend and senior claims

Ownership boundary

MSTRBTC

A security holder has no redemption right to specific bitcoin held by the company.

Read the metric carefully. The issuer’s “BTC Yield” measures change in bitcoin per assumed diluted share; it is not income, conventional yield or shareholder return.

Selected issuer-reported checkpoints; the August 2020 point is the initial disclosure and later points are year-end totals. Values are approximate. Original acquisition cost is neither carrying value nor market value. Primary records: initial 8-K, 2021 annual report, 2022 annual report, 2025 annual report and name-change record.
What changed

Scaling moved upward into layers and outward into competing chains, while financial markets created new ways to gain exposure without participating directly in the network.

The monetary schedule

Scarcity is measured in block height, not calendar years.

Bitcoin Core right-shifts the initial subsidy after every 210,000 blocks. Halvings are often described as four-year events, but the exact dates drift because block production is probabilistic. The charts show maximum subsidy allocation, not coins that are necessarily circulating, recoverable or available for sale.

Figure 01

Block subsidy by issuance era

BTC available to claim per valid block

At a target average of ten minutes per block, expected issuance moved from about 7,200 BTC per day in 2009 to about 450 BTC per day after block 840,000.
What a halving changes

The maximum subsidy a valid block may create. This directly changes miner revenue from issuance and the rate at which the remaining supply can be allocated.

What it does not change

Existing balances, transaction validity, the supply cap, or market price. It also does not guarantee exactly 144 blocks in a calendar day.

The long-run question

As subsidies approach zero, transaction fees must carry more of the incentive to produce blocks. The resulting security budget depends on future demand for block space.

Figure 02

Maximum cumulative subsidy allocation

Share of the conventional 21 million cap

The next subsidy boundary is block 1,050,000. The ~2028 date is a projection for the end of the current 210,000-block era, not a fixed calendar date or an estimate of coins already issued. Because rewards resolve to integer satoshis, the exact maximum subsidy allotment is 20,999,999.9769 BTC.

Derived from the Bitcoin Core subsidy implementation and mainnet’s 210,000-block halving interval.

Historical phase 05

Protocol anchorTAPROOT ACTIVATION
HEIGHT 709,632Records 19—26

2021—2025

Institutions and states

Bitcoin increasingly entered law, national policy and conventional investment accounts. Access widened, but often through custodians and legal structures far removed from self-custody. State pressure also demonstrated that a digital network still depends on physical machines, energy and jurisdiction.

REC 19MiningCAMBRIDGE ESTIMATES / MAY–JULY 2021

China’s mining crackdown

Physical infrastructure migrates while the chain continues.

Chinese authorities intensified restrictions on cryptocurrency mining, and a large share of reported hash rate went offline or moved elsewhere. Bitcoin’s block production slowed until the protocol’s periodic difficulty adjustments reduced the work target, after which the network returned toward its intended cadence.

The episode demonstrated both resilience and dependence. A government could materially disrupt miners located within its borders, but no central operator was required to reconfigure the global network. Geographic hash-rate estimates remain imperfect, and migration did not eliminate concerns about mining concentration or energy policy.

Data 04Estimated share of global hash rate

Mining had already begun moving before the ban.

On-chain response
Difficulty fell 45.4%, then began recovering.

Difficulty at the first block of each 2,016-block retarget period · trillions of the genesis target

Cambridge location estimates came from four pools representing about 37% of hash power; they are a sample, not a census. Difficulty values are reproduced from the public headers at the first block of each adjustment period. Cambridge data · May starting block · July trough · October block
An orange bitcoin ATM in El Zonte, El Salvador, photographed in June 2021
El Zonte / June 2021. A bitcoin ATM before the national law took effect. Physical access points made the digital policy visible—and introduced operators, fees and custody choices. Photograph: Karlalhdz · CC BY-SA 4.0 · Wikimedia Commons
REC 20Law & policyDECREE 57 / EFFECTIVE 7 SEP 2021

El Salvador’s Bitcoin Law

A country makes bitcoin legal tender alongside the U.S. dollar.

El Salvador’s Bitcoin Law took effect ninety days after publication. It required economic agents, with stated exceptions, to accept bitcoin when offered and created a government-backed conversion mechanism. The state promoted a custodial wallet called Chivo and funded infrastructure intended to reduce exchange-rate friction for users.

The experiment blended distinct ideas: an open network, a legal-tender mandate, public financing and a state-operated service. Adoption claims were contested, technical problems accompanied the rollout and exposure to price volatility became a public-policy issue. Calling the law “Bitcoin adoption” without separating voluntary network use from government implementation obscures much of what was being tested.

REC 21ConsensusBIP 341 / HEIGHT 709,632

Taproot activation

Schnorr signatures and selective revelation expand the scripting toolkit.

Taproot introduced a new output type built around Schnorr signatures. A cooperative spend can use a compact key path; alternative conditions can be arranged in a tree and reveal only the branch actually used. Tapscript also created a more adaptable foundation for future script changes.

The efficiency and privacy gains are conditional, not automatic anonymity. They depend on how wallets construct and spend outputs, and blockchain observers can still see public transaction data. Taproot’s relatively orderly activation also reflected lessons from the contentious SegWit era.

REC 22CustodyFEDERAL CASE RECORDS / 2022–2023

FTX

Another intermediary failure repeats an old lesson at a larger institutional scale.

Cryptocurrency exchange FTX entered bankruptcy after a liquidity crisis exposed severe problems in the handling of customer assets. U.S. prosecutors later alleged fraud, money laundering and campaign-finance offences; founder Sam Bankman-Fried was convicted on fraud and conspiracy counts in 2023.

FTX involved many assets and businesses beyond Bitcoin, but its collapse again separated an exchange ledger from a public blockchain. Customers could see account balances without controlling the underlying keys. As with Mt. Gox, continued block production did not erase the economic harm caused by failed custody and governance.

REC 23Financial wrapperD.C. CIRCUIT / SEC APPROVAL / FIRST TRADING

The path to U.S. spot ETPs

A court ruling forces reconsideration; exchange listings follow.

The U.S. Securities and Exchange Commission had repeatedly rejected proposals for exchange-traded products holding spot bitcoin while permitting products based on bitcoin futures. In August 2023, the D.C. Circuit ruled that the agency had not adequately explained its different treatment of Grayscale’s proposal and vacated the denial.

On 10 January 2024, the SEC approved exchange rule changes allowing a group of spot bitcoin exchange-traded product shares to list and trade. The products began trading on 11 January. The decision broadened brokerage access and brought large regulated custodians into the market; it did not approve or endorse Bitcoin itself.

The ownership model is also different from self-custody. An ETP investor owns shares representing an economic interest in a vehicle; the fund and its service providers arrange custody of the underlying bitcoin. The wrapper improves familiarity and access while concentrating coins and operational responsibility in institutions.

REC 24IssuanceHEIGHT 840,000 / MAX SUBSIDY 6.25 → 3.125 BTC

Fourth halving

The subsidy falls to 3.125 BTC per block.

Bitcoin entered its fifth subsidy era at 00:09:27 UTC according to the block header timestamp. At the target pace of 144 blocks per day, expected new issuance fell to about 450 BTC per day—one sixteenth of the launch-era rate.

More than 93 percent of the conventional 21 million cap had been allocated through maximum subsidies by this boundary. Unspendable outputs, lost keys and miners claiming less than the full reward mean maximum allocation is not the same as liquid or spendable supply.

REC 25Law & policyDECREE 199 / EFFECTIVE 30 APR 2025

El Salvador reforms

The legal-tender regime is narrowed.

As prior actions for an IMF-supported program, the January 2025 legislative reforms made private-sector bitcoin acceptance voluntary, returned tax payments to U.S. dollars and constrained public-sector participation. The IMF described the amendments as removing essential features of bitcoin’s legal-tender status.

The reversal matters because national policy is not consensus code. A law can be enacted, implemented unevenly and later amended while the underlying network continues unchanged. “Bitcoin became legal tender” is therefore a dated historical statement, not a complete description of El Salvador’s current regime.

REC 26Law & policyExecutive order / 6 Mar 2025

Strategic Bitcoin Reserve

An executive order establishes a federal holding policy for forfeited bitcoin.

A U.S. executive order created a Strategic Bitcoin Reserve initially capitalized with bitcoin already owned by the federal government through final forfeiture. It directed that deposited reserve BTC not be sold and called for an accounting of federal digital-asset holdings.

The order authorized the Treasury and Commerce departments to develop budget-neutral acquisition strategies, subject to existing law. It did not appropriate money for an open-market buying program. The distinction is significant: the policy concerned custody, disposition and possible future acquisition methods, not a change to Bitcoin or an automatic purchase mandate.

What changed

Bitcoin became easier to encounter through law and conventional finance, even as those gateways concentrated custody and policy risk outside the protocol.

The market record · 2010—2025

The price crossed six orders of magnitude. The route was anything but smooth.

The first positive observation in the downloaded Coin Metrics series is $0.08584 on 18 July 2010. The 31 December 2025 observation is $87,516.98—about 1.02 million times higher in nominal dollars. That endpoint conceals repeated contractions, changing market structure and long periods when a prior high remained far away.

Market 01Coin Metrics PriceUSD · nominal dollars · logarithmic axis

Year-end observations preserve both the ascent and the drawdowns.

Why log scale

Each horizontal step is a tenfold change. A linear axis would make the first decade nearly invisible beside recent prices.

What the line resists

Year-end price fell in 2014, 2018, 2022 and 2025. Long-run ascent did not eliminate deep or prolonged drawdowns.

What price cannot measure

A dollar quotation is not a direct measure of users, payment utility, decentralization, custody quality or future returns.

Nominal UTC daily observations; not inflation-adjusted and not intraday highs or lows. Amber meridians mark halving block heights. Early markets were thinner and less standardized than later ones. Source: pinned Coin Metrics community data and its price methodology.

Market 02Four matched calendar windows · −365 / boundary / +365 days

Halvings changed issuance. The observed price response was neither fixed nor isolated.

Boundary−365dHalving date+365dPrior yearFollowing year
210,00050 → 25 BTC$2.54$12.33$1,007.39+385.3%+8,069.1%
420,00025 → 12.5 BTC$269.68$651.94$2,506.17+141.7%+284.4%
630,00012.5 → 6.25 BTC$7,325.08$8,591.65$56,612.10+17.3%+558.9%
840,0006.25 → 3.125 BTC$28,251.28$64,907.99$85,101.75+129.8%+31.1%
Prices are Coin Metrics PriceUSD observations keyed to each UTC calendar date, not transaction-time prices at the block timestamp. Verify blocks 210,000, 420,000, 630,000 and 840,000.

Model 01Contested empirical fit · not consensus · no forecast shown

A straight line on log–log axes became a Bitcoin price hypothesis.

Observed 5,646 daily PriceUSD values · 18 Jul 2010—31 Dec 2025

log10(P) = −16.5406 + 5.6996 × log10(d)

P is nominal BTC/USD. d is UTC days since the Genesis block.

Exponent
5.6996
Log-space R²
0.96098
Residual σ
0.30304 log₁₀
Descriptive factor
about ×/÷ 2.01

Model / not mechanism

A power curve is a compact description of this historical sample. It is not a protocol rule, a guaranteed floor, proof of causation or evidence that the same relation must persist.

Price and network age both trend strongly, while daily residuals are serially correlated. A high in-sample R² can therefore coexist with weak causal or forecasting evidence.

The equation contains no halving term. Halving markers belong on the historical chart as annotations, not as inputs the model secretly explains.

Start-date stress test

The fitted exponent moves when the sample window moves.

Same daily series, same Genesis origin, different first observation.

  1. β 5.700R² .961
  2. β 5.556R² .954
  3. β 5.654R² .942
  4. β 5.329R² .918

Adoption atlas · record closed 31 December 2025

Countries and institutions entered through different doors.

“Bitcoin adoption” is not one variable. A parliament can alter payment law; a regulator can license intermediaries; a state company can mine; a treasury can hold purchased or forfeited coins; a bank can custody customer assets; and citizens may still rarely transact. The record keeps those actions on separate axes. · Read the policy and sovereign-adoption dossier

Policy 01Selected national and central-bank signals · not a country ranking

A state can regulate Bitcoin without owning it—and own it without making it money.

Date / jurisdictionState signalWhat changedWhat it did not mean
JapanRegulated marketCrypto-asset exchange providers entered a registration regime.Bitcoin did not become legal tender; the FSA describes crypto-assets as non-fiat.
El SalvadorMandatory payment → voluntaryThe 2021 law required acceptance and backed dollar conversion; 2025 amendments removed those mandatory features.A legal designation was not proof of broad use, and the original regime did not remain intact.
Central African RepublicLegal tender → reversedA 2022 law gave crypto-assets legal-tender status; a 2023 law removed it.The brief legal experiment did not establish widespread household adoption.
BrazilRegulated marketA federal framework defined virtual-asset services and appointed the central bank as supervisor.The rules governed intermediaries; they did not make bitcoin sovereign money or a reserve.
BhutanState-owned miningThe official development plan records DHI mining, primarily bitcoin, from 2022; DHI announced a Bitdeer partnership in 2023.Industrial participation is not legal tender, a household-use statistic or proof of a specific public balance.
United StatesForfeiture-capitalized reserveAn executive order initially capitalized a reserve with finally forfeited federal BTC and directed that deposited BTC not be sold.It did not fund an unrestricted taxpayer-backed market-buying program.
CzechiaCentral-bank pilotThe Czech National Bank created a $1 million test portfolio containing bitcoin and other tokenized assets.The CNB explicitly placed the pilot outside its international reserves.
2

National legal-tender regimes enacted through 2025. Central African Republic reversed its regime; El Salvador later removed its mandatory core.

4 axes

Payment law · public balance sheet · regulated market · state industry. None is a proxy for citizen ownership or transaction use.

Adoption 01Company filings · custody launches · trust records

Beyond MSTR, four ownership routes carried Bitcoin into institutions.

Company treasuryCustomer custodyTrust assets

01 / principal capital

Corporate treasuries

The operating company controls the asset and shareholders bear its capital-structure decisions.

  1. Block / Square$50m, then $170m; approximately 8,485 BTC at 2024 year-end.
  2. Tesla$1.5bn purchase; $936m sale proceeds in 2022 show treasury adoption can reverse.
  3. Semler ScientificTreasury policy; 2,298 BTC reported at 2024 year-end.
  4. MetaplanetStrategy adopted in April; 1,762 BTC reported at year-end.
  5. GameStop4,710 BTC acquired for approximately $500m.
02 / private issuer reserve

Tether

A stablecoin reserve policy is not an ordinary public-company treasury and is disclosed through attestations rather than a conventional annual filing.

  1. Profit-allocation policyUp to 15% of realized operating profit designated for BTC; 2024 year-end assurance listed $7.858bn of bitcoin controlled by Tether International.
03 / financial service

Institutional custody

A bank or custodian safeguarding client assets is providing infrastructure, not necessarily buying bitcoin for its own treasury.

  1. Fidelity Digital AssetsInstitutional custody business launched.
  2. BNYBitcoin and ether custody platform opened for selected clients.
04 / trust wrapper

U.S. spot ETP trusts

Coins backing trust shares belong to the trust structure—not to the sponsor’s corporate treasury and not directly to shareholders.

  1. SEC approvalsSpot bitcoin exchange-traded products entered U.S. securities accounts.
  2. IBITThe iShares Bitcoin Trust reported 551,918 BTC held by the trust.

Do not add the rows. USD purchases, BTC balances, customer custody and trust assets are heterogeneous and can overlap. A grand “institutional holdings” total risks double-counting the same coins.

Ask who owns the claim. Company shares, stablecoin claims, custody accounts and ETP shares expose holders to different redemption, governance, counterparty and dilution rules.

Continue with the filings. Read the institutional-adoption dossier, the U.S. spot Bitcoin ETP dossier or the popularity and acceptance dossier.

The unfinished history

What remains unresolved?

Bitcoin’s history is not a straight line toward inevitability. Its most important questions remain active design, market and political problems.

  1. 01Security budgetWill future demand for block space generate enough fees as the subsidy declines?
  2. 02Scale and verificationHow much activity should settle on the base layer, and what trust trade-offs will users accept elsewhere?
  3. 03Custody concentrationWill institutional access place growing shares of bitcoin behind a small number of custodians?
  4. 04Privacy and policyCan open transaction verification coexist with practical financial privacy and changing national rules?
  5. 05Model riskWhich apparent long-run market relationships survive new data, alternate windows and competing explanations?

Method & sources

How this record was assembled.

01

Primary records come first. Mailing-list posts, source code, block records, court opinions, laws and official announcements are linked beside the relevant passage.

02

Dates have different meanings. Block dates are UTC header timestamps, not independent proof of the exact physical mining moment. Legal and market events use the dates in their official records.

03

Protocol, business and policy are kept separate. A company failure is not described as a consensus failure; a legal designation is not described as a protocol upgrade.

04

Interpretation is labelled by context. Claims about motives, significance and future effects are distinguished from what the primary record itself establishes.

05

Market fits remain descriptive. Price windows, scales and regression choices are disclosed; correlation is not presented as causation or a forecast.

Published and maintained by the Degrees of Satoshi editorial project · Last substantively reviewed 9 August 2026 · Educational history, not investment advice.

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