Bitcoin is on the verge of reaching a major symbolic milestone with the issuance of its 20 millionth coin.
According to the Clark Moody dashboard, 19,996,979 BTC have been mined, leaving only about 3,000 BTC before the 20 millionth bitcoin is reached, in about seven days at current issuance rates. Once this threshold is crossed, over 95% of the fixed supply of 21 million will be in circulation, with only 1 million coins to be mined over the next century.
Satoshi Nakamoto hardcoded the 21 million cap into the Bitcoin protocol to create an absolutely rare form of currency, in stark contrast to fiat currencies that can be expanded by central banks. Although Satoshi never fully explained the specific number, the fixed limit established the credibility of a predictable supply. For Bitcoin maximalists, the cap is fundamental. Any suggestion to change it is seen as undermining Bitcoin’s core value proposition of “hard money.”
The scarcity of Bitcoin is often compared to that of gold or oil. But if the supply of raw materials can respond to rising prices with increased production or new discoveries, Bitcoin issuance cannot accelerate. Its supply curve is transparent and immutable.
Issuance slowed by halving, which reduced miner rewards approximately every four years, pushing inflation below 1%, with approximately 450 BTC mined daily. At this rate, 99% of the supply will be mined by January 2035. The final full bitcoin is expected around 2105, with fractional issuance continuing until around 2140.
After that, miners will be entirely dependent on transaction fees. For supporters, the 20 million milestone reinforces the narrative of bitcoin’s scarcity as supply dwindles. For miners, this highlights the long-term shift toward a fee-driven revenue model that will ultimately determine the security and economics of the network.
