Binance Founder CZ Says Bitcoin Supply May Be Lower Than Expected

Summary

• Changpeng Zhao estimates 10% to 20% of mined Bitcoin could be permanently lost, making its effective supply considerably smaller overall.
• More than 20.07 million Bitcoin have been mined, leaving roughly 4.4% of the cryptocurrency’s maximum supply still awaiting future issuance.
• Lost private keys can permanently remove Bitcoin from circulation, while halvings progressively reduce the amount of new BTC entering markets globally.

 

Binance founder Changpeng Zhao has argued that Bitcoin’s actual available supply could be significantly smaller than commonly estimated. According to CZ, between 10% and 20% of mined Bitcoin may be lost, stuck, or permanently inaccessible to owners.

His estimate suggests millions of BTC could effectively remain outside circulation, adding another layer to Bitcoin’s established scarcity model. More than 20.07 million Bitcoin have already been mined from the cryptocurrency’s maximum supply of 21 million BTC.

Consequently, only about 4.4% of Bitcoin’s programmed maximum supply remains available for miners to produce through future block rewards. However, CZ believes mined supply does not accurately represent the amount of Bitcoin that market participants can access and trade.

Some coins remain inside wallets whose owners have lost the private keys required to access or transfer their holdings. Additionally, lost recovery phrases and damaged storage devices can permanently prevent owners from recovering Bitcoin stored within affected wallets.

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CZ Estimates Millions of Bitcoin May Be Inaccessible

CZ estimates that 10% to 20% of Bitcoin’s existing supply could already be permanently lost or otherwise inaccessible. Based on 20.07 million mined BTC, that range could represent roughly two million to four million Bitcoin outside practical circulation.

Significantly, permanently lost Bitcoin differs from cryptocurrency held by long-term investors who simply choose not to sell their assets. Long-term holders retain access to their Bitcoin and can return those coins to the market whenever they choose.

By comparison, coins connected to permanently lost private keys cannot move unless owners somehow recover the necessary access credentials. Nevertheless, determining the exact amount of lost Bitcoin remains difficult because blockchain records cannot confirm whether wallet access has disappeared.

Dormant addresses may represent lost holdings, although some could belong to investors deliberately keeping their Bitcoin untouched for extended periods. Bitcoin’s fixed issuance structure further strengthens CZ’s scarcity argument because the network cannot replace coins that become permanently inaccessible.

Moreover, Bitcoin halvings periodically reduce mining rewards, limiting how quickly additional BTC enters circulation as supply approaches its maximum limit. This structure means lost Bitcoin can reduce effective supply without changing the protocol’s established maximum of 21 million coins.

Conclusion

CZ’s estimate highlights the difference between Bitcoin’s recorded mined supply and the amount potentially available for actual market transactions. If millions of BTC remain permanently inaccessible, Bitcoin’s usable supply could be substantially below the widely referenced mined supply figure.

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