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Bitcoin marks 20 million mined as halving tightens float

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20 millionth Bitcoin mined: less than 5% left

Bitcoin crossed a coded supply milestone: the 20 millionth coin has been mined, leaving less than 5% of the fixed 21 million maximum still to be issued. It marks continued execution of the protocol’s predictable issuance schedule and caps new supply over time.

Because issuance halves roughly every four years, progress toward 21 million slows geometrically. The milestone does not change Bitcoin’s code or daily operations; it confirms the supply curve anticipated since launch.

Why it matters: scarcity, Bitcoin halving, ~0.8% annual inflation

Scarcity is central: halving events cut the block subsidy, reducing new issuance and pushing annual supply inflation toward about 0.8%. as reported by Cointelegraph (https://cointelegraph.com/news/bitcoin-95-percent-supply-milestone-scarcity-maturity/?utm_source=openai), Kraken’s Thomas Perfumo called the threshold “an important milestone in the Bitcoin narrative” and linked it to the ~0.8% issuance pace. The report also notes the final tranche, just under 2 million BTC, will take well over 100 years to mine as halvings continue to decelerate output.

Immediate impact on Bitcoin circulating supply and price action

In the near term, Bitcoin’s circulating supply and price dynamics are unlikely to shift abruptly from the milestone alone. New issuance was widely anticipated, and liquidity depends more on demand versus the tradable float than on headline thresholds.

Institutional interest illustrates how scarcity can matter over longer horizons. As reported by mexc.com (https://www.mexc.com/en-GB/news/402143?utm_source=openai), BlackRock CEO Larry Fink said: “If every millionaire in the U.S. asked their financial advisor to get them one Bitcoin, there wouldn’t be enough.”

What’s next: mining incentives and effective circulating supply

Miner revenue after halvings: declining rewards, growing role of fees

After the April 2024 halving, block rewards fell again and will keep declining each cycle. Over time, miners increasingly rely on transaction fees to sustain operations and support network security incentives.

Tradable float: lost coins and institutional holdings reduce availability

Effective circulating supply can be materially lower than the headline total. Lost keys and long-dormant wallets remove coins from active use, while institutional vehicles and corporate treasuries, such as MicroStrategy, can reduce the tradable float for spot markets.

FAQ about 20 millionth Bitcoin

How many Bitcoins are left to mine and how long will it take to reach 21 million?

Roughly 1 million BTC remain. Due to halvings, issuance decays exponentially; reaching the 21 million limit will take well over a century.

How many Bitcoins are lost, and what is the true circulating supply available to trade?

Estimates suggest 2.3–3.7 million BTC are permanently lost; according to ethers.news (https://ethers.news/articles/95-mined-one-century-left-bitcoins-20-millionth-coin-is-about-to-be-mined-the-most-consequential-supply-event-in-monetary-history-since-gold-hit-peak-production?utm_source=openai), this reduces effective circulating supply alongside coins held long-term by institutions.

DISCLAIMER: The information on this website is provided as general market commentary and does not constitute investment advice. We encourage you to do your own research before investing.
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Avatar of Elena Zenth

Elena Zenth

09 March 2026, 14:10:57 GMT +0000

Elena Zenth is a veteran cryptocurrency journalist with over a decade of experience covering stablecoins, exchange activity, and blockchain trends. At Coincu.com, she turns on-chain data and trading insights into clear, actionable stories for everyday readers. Former contributor to CoinTelegraph, Elena is known for her bold, fact-driven journalism and investigative deep-dives exposing fraud and emerging tech in the crypto space.

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