Bitcoin Supply Tracker
Visualize Bitcoin's fixed monetary policy in real time. Track mined supply, lost coins, and the halving issuance schedule.
Why 21 Million?
Programmatic Scarcity
Bitcoin's supply schedule is written in code, not decided by committee. No central authority can print more — the rules are enforced by every node on the network.
Halving Mechanism
Every ~4 years, the block reward is cut in half. This creates a disinflationary model where new supply shrinks exponentially — the opposite of fiat monetary policy.
Lost Coins
Millions of BTC are permanently lost — early mining with discarded keys, forgotten wallets, and deceased holders. The effective circulating supply is even scarcer than 21 million.
Compare with Fiat
The US M2 money supply has grown from ~$4.6 trillion in 2000 to over $21 trillion in 2024 — a 350%+ increase. Central banks worldwide continue to expand their monetary bases with no hard limit.
Bitcoin's supply, by contrast, follows a mathematically fixed schedule. No emergency printing, no quantitative easing, no surprise debasement. The total supply will never exceed 21 million BTC — and the issuance rate drops by half every four years until the last satoshi is mined around 2140.
This makes Bitcoin the first monetary asset in history with a verifiably finite supply.
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The Supply Tracker is one of many free tools on Bitcoin.diy. Explore DCA calculators, fee estimators, network dashboards, and more.