Bitcoin is closing in on a major milestone, with the total number of coins mined approaching 20 million out of its fixed 21 million supply.
More than 95% of all bitcoin that will ever exist is already in circulation. With the cryptocurrency trading around $71,225, the network is expected to soon reach the issuance of its 20 millionth coin.
According to data from the Clark Moody Dashboard, approximately 19,996,979 BTC have been mined so far, leaving only about 3,000 coins before the 20 million mark is reached. At the current issuance pace, that milestone could arrive in roughly a week. Once achieved, only 1 million bitcoin will remain to be mined over the next century.
Bitcoin’s creator, Satoshi Nakamoto, built the 21 million supply cap directly into the protocol to create a monetary system defined by strict scarcity. This fixed limit contrasts sharply with fiat currencies, whose supply can be expanded by central banks. Although Nakamoto never clearly explained why the specific number was chosen, the cap established a predictable and transparent supply schedule.
For many bitcoin advocates, that limit is central to the asset’s identity. Any proposal to change the supply cap is widely viewed as undermining bitcoin’s core value proposition as a form of “hard money.”
Bitcoin’s scarcity is often compared with commodities such as gold or oil. However, unlike physical resources—where production can increase when prices rise—bitcoin’s issuance cannot be accelerated. Its supply curve is predetermined and publicly known.
The pace of new supply has slowed significantly through periodic halving events, which cut mining rewards roughly every four years. As a result, bitcoin’s inflation rate has fallen below 1%, with around 450 BTC currently mined each day.
At this rate, roughly 99% of the total supply is expected to be mined by January 2035. The final whole bitcoin is projected to be issued around 2105, with increasingly smaller fractional amounts continuing to be mined until about 2140.
After that point, miners will rely entirely on transaction fees rather than block rewards. For supporters, the approach of the 20 million milestone reinforces bitcoin’s narrative of digital scarcity, while for miners it highlights the gradual shift toward a fee-based revenue model that will ultimately shape the network’s long-term security and economics.
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