- Bitcoin has now mined 20M coins, meaning over 95% of its total 21M supply is already in circulation.
- Satoshi Nakamoto designed Bitcoin with a fixed supply cap enforced by thousands of network nodes.
- Bitcoin block rewards fell to 3.125 BTC after the 2024 halving, slowing new supply issuance over time.
Bitcoin has crossed a major supply milestone after miners produced the 20 millionth coin. The event occurred in March 2026 as the network continued issuing new coins through its programmed mining process. With only one million bitcoins left to mine, more than 95% of the total supply now exists.
Programmed Supply Limit Holds
Bitcoin operates with a fixed maximum supply of 21 million coins. The limit was embedded in the system by Bitcoin creator Satoshi Nakamoto in January 2009. Since launch, miners have added coins through block rewards on the network.
Each block confirms transactions and introduces newly minted bitcoin into circulation. However, the code strictly controls how many coins can exist. Thousands of independent nodes verify every block and enforce the same rules simultaneously.
Because of this design, no authority can increase the supply without broad network agreement. The milestone demonstrates that the original issuance schedule continues to function as programmed.
Halving Events Shape Issuance
Bitcoin’s issuance follows a declining schedule built directly into the protocol. Block rewards decrease roughly every four years through events known as halvings. At launch, miners received 50 bitcoins per block. The reward later dropped to 25, then 12.5, and eventually 6.25 coins.
After the 2024 halving, the reward fell further to 3.125 bitcoins per block. As a result, fewer coins enter circulation over time. These programmed reductions slow the rate of supply growth. Currently, Bitcoin’s annualized supply inflation stands below one percent.
Final Bitcoin Will Take Decades
Although only one million coins remain, mining will continue for many decades. The halving schedule gradually extends the timeline for new issuance. According to the protocol design, miners will release the remaining supply over more than a century. Each halving further reduces the reward paid for securing the network.
As a result, most Bitcoins already circulate today. The network continues producing blocks while following the same issuance rules introduced in 2009. The milestone highlights how the system maintains predictable supply through software rules rather than institutional policy.
