The 20 millionth Bitcoin has been mined, with less than 1 million left in the remaining supply

**March 9th On-Chain Update: Bitcoin Reaches 20M BTC Mined Milestone** On-chain metrics confirm Bitcoin has hit a major milestone: over 20 million BTC have been mined, 17 years and two months after its genesis block launched in January 2009. The mark was reached at block height 939,999, with the current block reward sitting at 3.125 BTC. Last November, the network already topped 95% of its total supply. Through multiple halving cycles, new supply issuance has slowed steadily—fewer than 1 million BTC remain unmined, eventually pushing miners to rely entirely on transaction fees. The next halving is slated for April 11, 2028. Each halving cuts issuance further, so remaining BTC will be mined at an ever-slower rate. Analysts project the final 1 million BTC will take more than a century to mine, with the smallest unit—satoshis—set to be fully issued around 2140.