Bitcoin nears final 1M supply as halving cuts subsidy

Only 1 million bitcoin left; final issuance around 2140

Bitcoin’s mined supply has surpassed 20 million coins, meaning only 1 million bitcoin left to be issued under the protocol’s 21 million cap. As reported by The Block, this threshold indicates more than 95% of the maximum supply is already issued and the final satoshi is expected around 2140.

This milestone reflects Bitcoin’s predictable issuance math: new supply halves roughly every four years, so the remaining coins will be released increasingly slowly. That decelerating pace pushes most of the remaining issuance far into the future, while the network’s rules keep the cap fixed.

Why this milestone matters: scarcity, predictability, and miner economics

For markets, the significance centers on scarcity and policy credibility. According to Grayscale Investments, Bitcoin’s design, a digital money system with transparent, predictable, and ultimately scarce supply, has become more salient as fiat regimes face policy uncertainty.

Predictability also shapes miner economics. With each halving, the block subsidy shrinks, increasing the importance of transaction fees vs block subsidy in miner revenue and, by extension, the network’s security budget.

That framework is why some analysts view the 20 million mark as a structural, not immediate, catalyst: the pathway was well understood, but it reinforces the “hard money” characteristics investors evaluate alongside assets like gold. “This milestone underlines Bitcoin’s hard money characteristics, fixed supply and diminishing issuance,” said Thomas Perfumo, Global Economist at Kraken.

Near-term price effects may therefore be limited, while longer-term outcomes could depend on demand growth, the maturation of the fee market, and how efficiently miners operate as rewards decline.

What ‘20 million mined’ means for Bitcoin’s fixed supply

The 21 million cap governs total issuance; “mined” or “issued” refers to coins created by the protocol, not necessarily coins actively circulating or available for sale. Some early holdings may be inactive for long periods or permanently inaccessible if private keys are lost, which would reduce effective supply, though definitive figures are uncertain.

The bitcoin halving schedule reduces issuance by 50% roughly every four years, ensuring that each new cohort of coins is smaller than the last. Over time, miners rely proportionally more on transaction fees to compensate for a lower subsidy, aligning security incentives with on-chain activity.

By the time the cap is reached around 2140, no new coins will be created and miner revenue would come from fees alone. Between now and then, supply growth is set by code, enabling investors and miners to model issuance while focusing attention on adoption, liquidity, and operational efficiency.