Over the 17 years of the cryptocurrency industry's existence, dozens of mysteries have accumulated that remain unsolved to this day: Bitcoin's anonymous creator, billions that disappeared, missing people and coins deliberately destroyed. Cointelegraph Magazine's editorial team compiled ten cases that investigators, journalists and on-chain analysts have been unable to close for years. Below are the bare facts of each case: dates, amounts and the current status of the investigations.
Overall scale: The ranking includes more than 1.7 million "stranded" or stolen BTC, scam losses exceeding $4 billion, and an FBI reward of up to $5 million for the CryptoQueen alone. None of the ten cases has been fully solved.
The author of the Bitcoin white paper (2008) and miner of the genesis block (January 2009) disappeared from public view in 2010, leaving behind the industry's greatest mystery.
In 2013, researcher Sergio Lerner analyzed early blocks, identified a single mining pattern and attributed it to one network participant whom he called Patoshi.
In 2016, an attacker exploited a vulnerability in The DAO smart contract and withdrew more than 3.6 million ETH — over 30% of the fund's assets. The result was a network split into Ethereum and Ethereum Classic.
After the exchange collapsed in February 2014, around 850,000 BTC disappeared; only 200,000 were later found in old wallets.
In December 2018, the founder of the Canadian exchange suddenly died in Jaipur, India, and the platform lost access to customer funds. It was believed that the private keys had "gone to the grave" with him.
Within hours of FTX filing for bankruptcy, digital assets began disappearing from the exchange's wallets; the final estimate of the theft was around $415 million.
Ruja Ignatova, the charismatic founder of OneCoin, according to the FBI, was behind a scheme that defrauded victims worldwide of more than $4 billion.
In 2013, Welsh IT specialist James Howells threw away a drive containing the keys to what would later become a Bitcoin fortune, becoming a symbol of self-custody mistakes.
Early MakerDAO developer and Balancer co-founder Nikolai Mushegian was found dead on October 28, 2022, near Condado Beach in Puerto Rico.
In May 2026, someone sent 107 BTC (around $8.5 million) to an address from which the coins can never be spent, effectively destroying them. The coins had been purchased around 2014, when Bitcoin traded below $600 — meaning the owner voluntarily destroyed a fortune after an increase of more than 12,000%.
| Case | Scale | Status |
|---|---|---|
| Satoshi Nakamoto | ~1M BTC from early issuance | Identity unknown |
| Patoshi | 1.1M BTC | Miner unidentified |
| Mt. Gox | ~650,000 BTC | Location unknown |
| QuadrigaCX | Millions of dollars in customer funds | Funds not found |
| CryptoQueen | $4B in losses | Wanted by the FBI |
| Howells' hard drive | Bitcoin fortune | In the Newport landfill |
| DAO hacker | 3.6M ETH | Unidentified |
| FTX theft | $415M | Attacker unknown |
| Mushegian's death | — | Case closed without charges |
| 107 BTC burn | $8.5M | Motive unknown |
These ten stories are united by one core property of blockchain: transactions are public and irreversible, while the identities behind addresses remain hidden. Chain analysis can reveal the movement of funds, but it cannot answer the questions of "who" and "why." That is why some mysteries — from Patoshi to the burned coins — may remain unsolved forever: cryptography protects victims and criminals with equal impartiality.
“Satoshi's anonymity is not a bug, but a feature. Bitcoin does not need a leader, and the absence of a creator figure is precisely what made the network resistant to pressure on any individual.”
— Andreas Antonopoulos, author of “Mastering Bitcoin”
