Crypto News
Eli Ben-Sasson, the founder of Zcash and CEO of StarkWare, has publicly questioned Bitcoin's hard cap of 21 million coins, arguing that the fixed supply will be eroded as private keys are lost over time.
In a post on X, Ben-Sasson wrote that capping Bitcoin's supply at 21M "doesn't make sense" because "as time goes to infinity, all keys will be lost." He said he strongly supports a clear monetary policy with an absolute upper bound on the number of Bitcoins, and floated the idea of fixing a maximum supply.
Why it matters
The supply cap is a foundational element of Bitcoin's monetary policy and a central part of its value proposition as a fixed-supply asset. Any serious discussion of changing that cap would require overwhelming consensus across miners, node operators, and holders, and the technical and ideological barriers to such a change are widely viewed as nearly insurmountable. Ben-Sasson's comments are notable more for the source than for the proposal itself.
Market impact
Bitcoin's price and network behavior were not immediately affected by the remarks. The post reads as a philosophical critique rather than a coordinated effort to push for a protocol change, and similar debates over supply caps and lost keys have surfaced periodically in the industry without translating into actual development proposals.
Frequently asked questions
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Who is Eli Ben-Sasson and why does his opinion on Bitcoin's supply cap matter?
Eli Ben-Sasson is a co-founder of Zcash and CEO of StarkWare, the team behind Starknet. He is a respected figure in the cryptography and blockchain space, which is why his public critique of Bitcoin's 21M cap drew attention despite not representing a coordinated push for protocol change.
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What is Ben-Sasson's main argument against Bitcoin's 21 million supply cap?
Ben-Sasson argues that the fixed 21M cap does not hold in practice because private keys will be lost over time, and as time approaches infinity, all keys will eventually be lost, effectively eroding the circulating supply to zero.
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What alternative does Ben-Sasson propose for Bitcoin's monetary policy?
He said he strongly supports a clear monetary policy with an absolute upper bound on the number of Bitcoins and floated the idea of fixing a maximum supply that would address the lost-key erosion he describes.
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Could Bitcoin's 21 million cap actually be changed?
Any change to Bitcoin's supply cap would require overwhelming consensus across miners, node operators, and holders. The technical and ideological barriers are widely viewed as nearly insurmountable, and similar debates have surfaced periodically without translating into development proposals.
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How did the market react to Ben-Sasson's comments?
Bitcoin's price and network behavior showed no immediate reaction. The post read as a philosophical critique rather than a coordinated effort to push for a protocol change.
Benjamin Cowen
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