StarkWare CEO proposes lifting Bitcoin cap with 4% annual issuance

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Bitcoin cap rethink proposal

Highlights

Eli Ben-Sasson proposes replacing Bitcoin's 21 million cap with a 4% annual issuance rate, citing supply loss from inaccessible private keys.
Up to 4 million Bitcoin are estimated lost, intensifying debate as critics warn altering the cap undermines scarcity that underpins Bitcoin’s 'digital gold' thesis.
Alternative models like Zcash's Network Sustainability Mechanism maintain a fixed cap with periodic token reissuance, but any similar Bitcoin change faces high governance hurdles.

Proposal revives supply cap debate

As reported by Cointelegraph, StarkWare CEO Eli Ben-Sasson says Bitcoin's 21 million cap should be replaced with a 4% annual issuance rate because private keys are lost over time, gradually reducing the accessible supply. In a post on X on Tuesday, he says the current cap “doesn't make sense” and argues that, over the long run, lost keys mean the effective supply trends lower.

Ben-Sasson still supports a hard upper bound on Bitcoin's supply and says a 4% annual inflation rate would roughly track human population growth. Ledger estimated in November that up to 4 million Bitcoin have been burned or permanently lost, reinforcing his argument that inaccessible coins affect the asset's long-term circulation.

Bitcoin's fixed cap remains central to its “digital gold” thesis and to arguments rooted in Austrian economics, where a constrained money supply is seen as protection against debasement. Critics of any cap change argue that altering the limit would weaken the feature many investors see as Bitcoin's core differentiator.

Industry backlash and alternative models

Ben-Sasson's comments draw strong criticism from Bitcoin supporters, with some arguing that Bitcoin's divisibility into 2.1 quadrillion satoshis addresses concerns about there not being enough units available. Ben-Sasson counters that those units also become effectively unavailable over time if private keys are lost.

Other opponents say removing the fixed cap would make Bitcoin resemble other cryptocurrencies, while supporters of the current model argue that lost coins improve scarcity because inaccessible holdings cannot be sold. Strategy executive chairman Michael Saylor has publicly endorsed that view and has said he plans to burn his Bitcoin private keys upon his death, which he describes as a pro-rata contribution to remaining holders.

Zcash founder Bryce “Zooko” Wilcox points to a different option under discussion in the Zcash ecosystem. The proposed Network Sustainability Mechanism would preserve Zcash's 21 million token cap while allowing users to burn tokens that are gradually reissued as block rewards over four years, an approach aimed at easing miner incentive pressure without abandoning a hard supply limit. Any comparable Bitcoin change would still require consensus among developers, miners and node operators, a high bar under the network's decentralized governance model.

Our earlier article on Strategy (MSTR) tracked a sharp, technically driven selloff in the stock and outlined a bearish near-term trading setup. It also highlighted Michael Saylor’s argument that Bitcoin’s long-run appreciation could support Strategy’s preferred dividends, even as investors weighed the firm’s large unrealized digital-asset losses and liquidity-focused moves such as selling BTC and boosting yield.

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