Satoshi's Lost-Coin Quote Hits 16-Year Mark as Millions of BTC Are Deemed Lost
Sixteen years ago today, Bitcoin’s creator, Satoshi Nakamoto, told a Bitcointalk user that losing coins was not a flaw in the system. It was a feature.
The discussion happened on June 21, 2010, in a Bitcointalk thread called “Dying bitcoins.” A user had asked whether forgotten wallets meant the network would shrink over time. Satoshi answered: “Lost coins only make everyone else’s coins worth slightly more. Think of it as a donation to everyone.”
Researchers now estimate 3.1 million BTC are permanently lost as of June 20, 2026. River’s 2025 report found 1.57 million BTC lost in self-custody, mostly before 2020. El Khatib and Legout confirmed only 3,197.61 BTC as provably burned through April 2024.
Satoshi’s quote is less a price prediction and more an observation that scarcity intensifies as coins disappear. The premise relies on bitcoin retaining enough value for people to want to hold it.
Several reports put the number of lost coins at about 3.1 million BTC, with a central range of 2.7 million to 3.9 million BTC. Against current circulating supply of 20,045,680.42 BTC, that midpoint equals roughly 15.5% of all mined bitcoin. However, these estimates cannot be proven with certainty.
Provable data is limited. A 2025 study using entropy filtering identified 3,197.61 BTC permanently destroyed through April 2024. Add Bitcoin’s unspendable 50 BTC genesis reward, and the provable floor barely moves.
Dormancy data paints a broader picture. Glassnode’s supply-by-age data shows 3.557 million BTC untouched for more than 10 years, 1.690 million BTC in the 7-to-10-year range, and 1.479 million BTC in the 5-to-7-year band. Roughly 5.25 million BTC dormant for over seven years are considered likely lost, but old coins still move.
The Patoshi factor adds complexity. Sergio Demian Lerner identified a dominant miner from 2009-2010, producing about 1.1 million BTC. BitMEX Research argued the figure is closer to 700,000-750,000 BTC. Views on whether these coins are lost, dormant, or unattributed swing the total estimate by hundreds of thousands of BTC.
Self-custody losses, such as forgotten seed phrases or discarded hard drives, are significant. James Howells accidentally discarded a laptop containing private keys to 7,000-8,000 bitcoin, now valued at nearly half a billion dollars. Newport City Council denied excavation permission, and the High Court dismissed his legal challenge in January 2025.
For traders, the dormancy data reinforces a scarcity case beyond the 21 million hard cap. If even the conservative 2.7 million BTC figure holds, effective circulating supply runs below headline numbers. The debate is unlikely to be resolved soon, as burn-address proof remains tiny and dormancy metrics remain probabilistic.