The total supply and actual supply of bitcoins vary slightly due to loss of private keys or hardware damage. Additionally, some bitcoins are permanently lost and cannot be recovered, making the actual supply smaller than the theoretical value. The inventor of Bitcoin, Satoshi Nakamoto, also has a considerable amount of bitcoins left untouched after mining it years ago. Is there 2 million Bitcoin left to mine? When Satoshi Nakamoto built Bitcoin, design choices were made that effectively limits the number of Bitcoins that will ever exist to (roughly) 21 million.
Since a new block is added every 10 minutes to the blockchain, and each block as of now produces 12.5 BTC, therefore, everyday 1800 Bitcoins are being minted or mined. The calculation of per day mining is pretty simple. We know, there are 60 minutes per hour and 24 hours per day giving a total of 1440 minutes and since it takes 10 minutes to mine one block, therefore, in a day 144 blocks are mined. Company In the early days of bitcoin, this reward was 50 bitcoins per solved block. This reward is halved per 210,000 dissolved blocks. With a block time of ten minutes, these 210,000 blocks are mined in approximately four years. At the time of writing, the block reward is therefore 12.5 bitcoins per solved block. Soon this reward will be halved to 6.25 bitcoins. Inflation on the Bitcoin network is therefore gradually decreasing until the number of 21 million is reached.