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The 21 million $BTC supply ceiling came into focus on July 7 when Eli Ben-Sasson, CEO of StarkWare and a co-founder of Zcash, published a proposal to replace the fixed cap with a maximum annual issuance rate of 4%.
At the current circulating supply of roughly 20.1 million coins, that rate would mint 804,000 BTC in year one alone.
The next confirmable milestone for the tape: whether Ben-Sasson submits the idea as a formal Bitcoin Improvement Proposal, the document the network requires to advance any protocol change.
The numbers behind the proposal Compounding at 4% annually, Bitcoin's supply would exceed 53 million coins within 25 years.
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