Encyclopedia Events and incidents · Entry 417

Bitcoin Ponzi schemes and scams: a short history, and how to spot the next one

Degrees of Satoshi editorial projectAI-assisted research · separate automated verificationCorrections

Theme: Events and incidents
Sources: 4 cited records
Reading time: About 4 minutes
Automated verification: 2 October 2026
Substantive update: 2 October 2026

In this article

At a glance

Key facts

Key facts for Bitcoin Ponzi schemes and scams: a short history, and how to spot the next one
Fact	Detail	Source
Bitcoin Savings and Trust	DOJ’s criminal-case sentencing account describes approximately 146,000 BTC fraudulently obtained; this is a differently scoped measure from gross deposits alleged in the SEC case	[3]
Shavers sentence	18 months in prison on 21 July 2016, following a September 2015 guilty plea	[3]
BitConnect plea	Glenn Arcaro pleaded guilty on 1 September 2021 to participating in a scheme described as causing over $2 billion in investor losses	[4]
OneCoin	Karl Greenwood was sentenced to 20 years on 12 September 2023; authorities describe more than $4 billion obtained from over 3.5 million victims	[1]
Impersonation reports	The FTC reported over $2 million sent to Elon Musk impersonators in the six months preceding its May 2021 report; reports are not a complete census	[2]

A quoted return is not proof of earnings

A Ponzi scheme uses new participants’ deposits to pay earlier participants while representing those payments as investment returns. A functioning withdrawal for one customer can therefore coexist with fraud. The source of the payment matters more than a screenshot of a balance.

The Justice Department’s Shavers sentencing account describes this mechanism in Bitcoin Savings and Trust. It records an 18-month sentence on 21 July 2016 and approximately 146,000 BTC fraudulently obtained in the criminal case. Do not combine that measure with the separate SEC gross-deposit allegation as if both counted the same thing.

A trading-bot story can conceal the same mechanism

In September 2021, BitConnect promoter Glenn Arcaro pleaded guilty to participating in a scheme that the Justice Department described as defrauding investors of more than $2 billion. The release discusses false claims about proprietary trading technology and payments to promoters.

This illustrates two questions for any claimed yield: what activity produces the return, and what records let someone inspect it? A token name, an automated-trading story or a referral payment does not answer those questions. See incentives versus earned fees for the accounting distinction.

A crypto label does not establish a cryptocurrency

The OneCoin sentencing record describes a purported cryptocurrency sold through a multilevel marketing network. Authorities said the scheme took more than $4 billion from more than 3.5 million victims; Karl Greenwood received a 20-year sentence in September 2023.

OneCoin should not be described as a Bitcoin consensus failure. The issue in that record is the business’s false representations and sale of a purported asset. The existence of a company account or quoted token value does not establish a public ledger or a redeemable balance.

Giveaway impersonation uses authority, not a protocol flaw

The FTC’s May 2021 consumer-report analysis describes impersonators promising to multiply cryptocurrency sent to them. It reports more than $2 million sent to Elon Musk impersonators over the preceding six months.

Those are reported losses for a stated window, not a complete measure of all fraud. The general mechanism is simpler than a contract exploit: a victim authorizes a payment based on a false claim about who is asking and what will happen next. A valid on-chain transaction can implement a fraudulent promise.

Direct answers

Questions people ask

Does a successful withdrawal prove an investment is genuine?

No. A Ponzi scheme can pay earlier participants using newer deposits. The payment shows that money was transferred, not that a claimed investment generated a profit.

Are these the same as attacks on Bitcoin?

The cited cases concern businesses, misrepresentations and payment instructions. They do not establish a break in Bitcoin’s transaction-validation rules. A fraudster can receive a valid transaction without exploiting the protocol.

Inspect the evidence

The answer and key facts have stable claim links. These records retain the scope and qualification when reused.

Crypto fraud can use familiar mechanisms: fabricated investment returns, recruitment rewards, impersonation and promises to double a deposit. The SEC’s Bitcoin Savings and Trust and BitConnect cases and the OneCoin criminal case document examples, with different assets and legal findings. Those cases concern schemes using crypto claims or payments; they do not by themselves show a break in Bitcoin’s consensus rules.