Michael Saylor, co-founder of MicroStrategy and one of the most well-known Bitcoin advocates, has issued a strong reminder to the crypto community. Unlike his usual AI-generated Bitcoin-themed posts, this time Saylor focused directly on the limited supply of Bitcoin.
Bitcoin’s Fixed Supply
As Saylor highlighted, the supply of BTC is capped at 21 million coins. This is a unique feature that traditional currencies like the U.S. dollar or other fiat money simply do not have. In recent years, the Federal Reserve and the U.S. Treasury have printed trillions of dollars to support the economy during and after the pandemic, while Bitcoin has remained scarce and predictable by design.
♾️ / 21M
— Michael Saylor (@saylor) August 21, 2025
Bitcoin Mining and the Halving Cycle
Out of the 21 million BTC, 19,908,015 have already been mined. Every four years, the halving event takes place, cutting block rewards in half. This means the number of new Bitcoins entering circulation decreases by 50% each cycle. Currently, there are only 1,091,185 Bitcoins left to be mined.
According to Bitcoin historian and journalist Pete Rizzo, the very last Bitcoin block will be mined 79 years from now, on August 17, 2104. This emphasizes Bitcoin’s capped supply and its role as a potential long-term store of value in the digital economy.
Why It Matters
Bitcoin maximalists argue that this limited supply makes BTC far stronger compared to fiat currencies and provides long-term security for investors. With scarcity built into its code, BTC continues to stand out as a hedge against inflation and unlimited money printing.
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