StarkWare CEO Eli Ben-Sasson has suggested that Bitcoin could adopt 4% annual inflation instead of keeping its current 21 million coin supply cap. His argument is that private keys are lost over time, which means some BTC becomes permanently unusable and the effective supply available to the market declines.
The proposal matters because Bitcoin’s fixed supply is one of its defining features and a core part of how many users understand its monetary design. Any suggestion to replace the cap with ongoing issuance touches a central debate in the crypto ecosystem: whether Bitcoin should remain strictly scarce or adapt to account for coins that can no longer move.
Ben-Sasson’s view centers on a practical issue in self-custody. When a user loses access to a private key, the associated Bitcoin is not destroyed on-chain, but it can no longer be spent. Over long periods, that could reduce the amount of BTC that is actually usable, even if the protocol’s total issued supply remains capped.
Many disagree with the idea, according to the source material. For critics, Bitcoin’s 21 million cap is not a flaw to be corrected but a foundational rule that supports confidence in the network’s monetary policy.
The discussion highlights a broader tension around Bitcoin governance and design. Even when proposals are framed as technical or economic adjustments, changes to Bitcoin’s supply rules are likely to face strong scrutiny because they affect the asset’s identity, its social consensus, and how participants value its scarcity.