The long-standing debate over Bitcoin’s fixed 21 million supply cap has resurfaced after StarkWare CEO Eli Ben-Sasson proposed replacing the cryptocurrency’s hard cap with a maximum annual issuance rate of 4%. The proposal has sparked widespread discussion across the crypto industry, where Bitcoin’s limited supply is widely regarded as one of its defining features.
Recently, StarkWare unveiled a privacy-focused Know Your Customer (KYC) solution on Starknet powered by zero-knowledge proofs. The system enables users to verify their identity without exposing sensitive personal information on-chain.
Why the Proposal Was Made
Capping the supply of Bitcoin at 21M doesn’t make sense. Beacuse over time, keys will be lost. In fact, as time goes to infinity, all keys will be lost.
I strongly support a clear monetary policy with an absolute upper bound on the # of Bitcoins in the future. Say, fix a max…
— Eli Ben-Sasson | Starknet.io (@EliBenSasson) July 7, 2026
Ben-Sasson argued that Bitcoin’s current monetary policy does not account for coins that become permanently inaccessible due to lost private keys, forgotten seed phrases, or damaged storage devices. According to his view, introducing a controlled inflation model could help offset the gradual decline in Bitcoin’s circulating supply over the coming decades.
Key Figures Behind the Debate
- Maximum Bitcoin supply: 21 million BTC
- Bitcoin mined so far: More than 20 million BTC
- Estimated permanently lost Bitcoin: 3–4 million BTC
- Proposed annual issuance: Up to 4%
- Expected completion of Bitcoin mining: Around 2140
Ben-Sasson believes Bitcoin’s effective supply continues to shrink as more coins become permanently lost. He suggested that a modest, predictable issuance rate could maintain adequate liquidity while preserving a transparent monetary policy. He also argued that future issuance could better align with long-term global population growth rather than remaining fixed.
The proposal has reopened discussions about Bitcoin’s long-term sustainability, particularly regarding miner incentives after block rewards become increasingly smaller in the coming decades.
Bitcoin Community Rejects Supply Change
Many Bitcoin supporters quickly dismissed the proposal, arguing that the 21 million cap is fundamental to Bitcoin’s value proposition. They contend that permanently lost coins simply increase the scarcity of the remaining supply, strengthening Bitcoin’s role as a scarce digital asset rather than weakening it.
Critics also noted that Bitcoin is divisible into 100 million satoshis per coin, creating a total of 2.1 quadrillion spendable units. They argue this level of divisibility is more than sufficient to support global transactions even if millions of bitcoins are lost over time.
Protocol Change Faces Major Hurdles
Changing Bitcoin’s supply limit would require overwhelming consensus from developers, miners, node operators, businesses, and the broader community. Historically, proposals affecting Bitcoin’s core monetary policy have faced significant resistance, making any modification to the 21 million cap highly unlikely.
While Ben-Sasson’s proposal has revived discussion around Bitcoin’s long-term economic design, there is currently no indication that the network’s fixed supply policy is set to change. For most participants, the 21 million cap remains one of Bitcoin’s strongest and most enduring principles.
According to CoinMarketCap, as of 8:04 a.m. UTC, Bitcoin was trading at $62,839, down 0.37% over the past 24 hours while posting a 7.15% gain over the previous seven days.
