What Is the Maximum Supply of Bitcoin?

The maximum supply of Bitcoin is nearly 21 million coins. The exact number is 20,999,999.9769 BTC. This limit is embedded in the protocol to prevent inflation and maintain a level of scarcity. New bitcoins are created through a process called mining, which involves solving complex mathematical problems to validate transactions and add them to the blockchain.

The reward for mining decreases over time, with the block reward halving approximately every four years. As the block rewards decrease, the rate of new Bitcoin creation slows down, eventually reaching the maximum supply. It is estimated that the maximum supply will be reached around the year 2140.