Bitcoin has reached another historic point in its long supply schedule: more than 20 million BTC have now been mined. That means over 95% of Bitcoin’s fixed 21 million supply is already out in the market, leaving fewer than 1 million coins still to be mined. The milestone was marked this week, while supply trackers now show Bitcoin moving beyond the 20 million level.
This is an Incredible Milestone
At first, that number may sound like Bitcoin is almost finished. But the remaining supply will not appear anytime soon. Bitcoin’s code reduces the mining reward roughly every four years through the halving process, which keeps slowing down new issuance. The current block subsidy has been 3.125 BTC since the April 2024 halving, and the last BTC is still expected to be mined around the year 2140.
This is what makes the 20 million mark important. It is not just a round number. It is a reminder that Bitcoin’s supply is fixed, public, and predictable. Unlike fiat currencies, where supply can expand based on policy decisions, Bitcoin follows a schedule that was built into the network from the beginning. That design is one of the main reasons Bitcoin is often seen as a scarce digital asset and, for many investors, a long-term store of value.
Bitcoin’s Mature Phase
The milestone also says something about where Bitcoin is in its life cycle. In the early years, coins were mined much faster, and block rewards were large enough to flood new supply into the system compared with today. Now the flow of fresh BTC is much smaller, and over time miners will depend less on newly issued coins and more on transaction fees. That shift will matter more and more as Bitcoin moves deeper into its mature phase.
The Psychological Side of Scarcity
There is also a psychological side to this moment. Bitcoin’s scarcity has always been one of its strongest narratives, but crossing 20 million mined coins makes that scarcity feel much more real. The market is now dealing with an asset where almost all of the lifetime supply already exists, while the final portion will be released very slowly over more than a century. In simple terms, the easy part of Bitcoin issuance is over.
That does not mean supply shocks happen overnight, and it does not mean price must move in one direction just because fewer coins remain. But it does strengthen one of Bitcoin’s most basic ideas: there will only ever be so much of it. Even after this milestone, Bitcoin stays on the same quiet schedule it has followed since launch, with the last stretch of supply still very far in the future.
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