The 20 Millionth Bitcoin Has Been Mined — Why the Final 5% Changes Everything
On March 9, 2026, at block height 939,999, Foundry USA mined the coin that pushed Bitcoin's circulating supply past 20 million. It took 17 years, two months, and one week to reach this point. The remaining one million coins will take more than 114 years to issue.
That asymmetry — 95% of supply produced in less than two decades, the final 5% stretched across a century — is not a quirk. It is the defining feature of the hardest monetary asset ever engineered.