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.