Eli Ben-Sasson Challenges Bitcoin With 4% Issuance
Ben-Sasson says lost BTC will make Bitcoin’s 21 million cap less relevant over time, and he is pushing for 4% annual issuance. The debate also touches on Bitcoin’s security budget and miner rewards after 2140.
Key Takeaways
- Eli Ben-Sasson says lost private keys will make Bitcoin’s fixed 21 million cap less relevant over time.
- He is calling for a 4% annual issuance model to keep miner rewards going after 2140.
- The debate touches on the long-term security and funding of proof-of-work networks like Bitcoin.
StarkWare CEO and Zcash founder Eli Ben-Sasson took aim at Bitcoin’s fixed supply this week. He argued that as more private keys are lost, the 21 million cap becomes less meaningful over time, and said a 4% annual issuance model would be a better fit.
Why the Cap Is Being Questioned
Ben-Sasson is hardly speaking from the sidelines. As a co-designer of Zerocash and one of the early minds behind STARK proofs, he has deep technical credibility in crypto. His point is straightforward: when coins are permanently out of reach, the amount of Bitcoin that can actually be used keeps shrinking.
That view matches earlier estimates from Chainalysis, which said back in 2017 that millions of BTC were likely lost forever. There are also still lawsuits tied to dormant Bitcoin wallets worth a combined hundreds of billions of dollars. Even so, many Bitcoin supporters see the fixed supply as one of the network’s defining features.
Ben-Sasson’s answer is a different kind of cap: limit annual issuance instead of total supply. He says a 4% emission rate, roughly in line with population growth, could preserve miner rewards well past 2140, when Bitcoin stops creating new block rewards.
Reaction From the Zcash World
The response was quick. Zcash founder Zooko Wilcox pointed to Shielded Labs’ Network Sustainability Mechanism, which lets holders voluntarily burn coins that can later be reissued as miner rewards. In that setup, Zcash keeps its 21 million cap intact.
Ben-Sasson pushed back on that approach and said fee burning would not generate enough funding to support miners over the long run. He also brought the discussion back to Bitcoin’s security budget, especially with transaction fees sitting near historic lows. The same issue also raises broader questions about how large Bitcoin-focused companies plan for the future, even as Saylor says Strategy’s Bitcoin dividend model remains sustainable.
What This Means for Bitcoin
For European crypto readers, the bigger issue here is what happens to Bitcoin’s security once block rewards eventually fade away. Bitcoin’s 21 million cap is more than just a line of code. It is part software rule, part social agreement, which makes any attempt to rethink it technical, economic, and political at the same time.
A proposal like this is unlikely to gain traction anytime soon, but the debate shows that long-term funding for proof-of-work networks is becoming a bigger topic across crypto. Even if it does not move the market right away, it points to where the next major Bitcoin argument is likely headed.
