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What Happened
On-chain data shows two Bitcoin addresses that had been inactive since September 2010 moved their entire balances within minutes of each other this week. Each address held 500 BTC, the standard block reward at the time, for a total of 1,000 BTC transferred. At current prices, the combined value is approximately $6.9 million.
The transactions occurred at block heights 74,628 and 74,629 in September 2010, when Bitcoin was roughly two years old and trading at fractions of a cent. The coins moved to new addresses in two separate transactions confirmed minutes apart, suggesting a single entity controlling both private keys.
Historical Context
In September 2010, Bitcoin was an experimental project known primarily to cryptographers and cypherpunk mailing list participants. The network had fewer than 1,000 nodes, and mining could be done profitably on a standard laptop CPU. The 50 BTC block reward — halved to 25 BTC in 2012, then 12.5 BTC in 2016, and 6.25 BTC in 2020 — meant each block mined generated what would become life-changing wealth for early participants.
These specific coins originated from coinbase transactions, the special transactions that create new Bitcoin as mining rewards. Unlike coins that have been traded, mixed, or used in commerce, these 1,000 BTC have never left the addresses where they were first recorded on the blockchain.
Why This Matters
The movement of genuinely ancient Bitcoin draws attention for several reasons. First, it provides a rare glimpse into the behavior of early adopters who accumulated significant holdings when Bitcoin had negligible monetary value. Second, it tests market liquidity: 1,000 BTC represents a meaningful but not disruptive amount for current order books on major exchanges.
Third, such movements often trigger speculation about whether the owner is Satoshi Nakamoto, Bitcoin’s pseudonymous creator. However, Satoshi’s known addresses are well-documented by researchers and these do not match the known set. The identity remains unknown, and no message was attached to the transactions.
Technical Details
The two sending addresses used the legacy Pay-to-PubKey (P2PK) script format, the original locking script type before Pay-to-PubKey-Hash (P2PKH) addresses — the familiar “1” addresses — became standard. This confirms the coins were mined very early in Bitcoin’s history, before the address format change in late 2010.
Each transaction paid a fee of approximately 0.0001 BTC ($0.69 at current prices), well above the minimum relay fee but modest by today’s standards. The receiving addresses use the newer SegWit-native Bech32 format (starting with “bc1”), indicating the owner has updated their wallet software to modern standards.
Market Impact and Precedent
Similar awakenings have occurred periodically. In 2020, 50 BTC from 2010 moved, sparking brief price volatility. In 2023, a 2011-era wallet moved 1,000 BTC. In each case, the market absorbed the supply without sustained disruption. The current 1,000 BTC represents roughly 0.005% of Bitcoin’s circulating supply of 19.7 million BTC.
Whether these coins will be sold, held in a new wallet, or used for another purpose is unknown. On-chain analysts will monitor the receiving addresses for further movement, particularly toward exchange deposit addresses, which would signal intent to sell.
What to Watch Next
Three developments merit attention. First, any further consolidation or splitting of the 1,000 BTC across additional addresses. Second, deposits to known exchange addresses — identifiable through clustering heuristics used by firms like Chainalysis and Glassnode — which would increase the probability of near-term selling pressure. Third, whether the owner moves other dormant coins from the same era, which would suggest a coordinated strategy rather than a one-time decision.
For now, the blockchain records only that two addresses dormant since Bitcoin’s infancy have awakened. The why, who, and what-comes-next remain unwritten.
Related reading
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