Bitcoin has surpassed 20 million mined coins, crossing the 95% mark of its fixed 21 million BTC supply. Fewer than 1 million BTC remain to be mined, a process that will stretch over the next century due to Bitcoin’s programmed issuance schedule.
Why this milestone matters
Reaching 20 million mined coins underscores Bitcoin’s scarcity-driven design. With the bulk of supply already created, the flow of new BTC entering the market continues to slow, reinforcing the asset’s fixed-cap dynamics. While more than 95% of the total supply now exists, a portion of mined coins is believed to be permanently lost or inaccessible, meaning the effective circulating supply may be smaller than headline figures suggest.
How Bitcoin’s issuance works
Bitcoin’s supply is capped at 21 million BTC and is released through block rewards paid to miners. These rewards are cut in half roughly every four years in an event known as the halving, reducing the rate of new issuance over time.
- Current block reward: 3.125 BTC (since the April 2024 halving)
- Approximate issuance: ~144 blocks per day, or about 450 BTC daily at present
- Next halving: expected around 2028, lowering the reward to 1.5625 BTC
- Final issuance: projected to continue until around the year 2140
This halving schedule makes Bitcoin’s issuance asymptotic: although less than 1 million BTC remains, the declining block reward means the final coins will be mined gradually over many decades.
Implications for miners and market structure
As subsidies decline, miner revenue increasingly depends on transaction fees alongside block rewards. Over time, fee dynamics, network usage, and mining efficiency are expected to play a larger role in sustaining the mining ecosystem. For market participants, diminishing new supply reinforces the narrative of digital scarcity that has long been central to Bitcoin’s value proposition.
What to watch next
- The pace of issuance and miner economics ahead of the next halving cycle
- Network activity and transaction fees as a growing share of miner revenue
- Hash rate and difficulty adjustments that reflect miner participation and profitability
With more than 20 million BTC now mined, Bitcoin enters a new phase where supply growth is increasingly constrained and long-term issuance trends come into sharper focus.