A founding scientist of Zcash just argued that Bitcoin’s 21 million supply cap is a bug, not a feature. The market yawned. The code did not change. But the question it raised will not go away.
Eli Ben-Sasson is not a random influencer. He co-invented STARK proofs and served as Zcash’s first chief scientist. In a series of posts published in mid-2026, he proposed that Bitcoin should adopt a perpetual inflation rate of 4% per year. His reasoning: lost private keys permanently remove coins from circulation, effectively reducing the available supply. By 2140, when the block subsidy drops to zero, Bitcoin will rely entirely on transaction fees to pay miners. If fees remain near their 2019 lows, the network’s security budget might not be enough to deter a 51% attack.
The response from the Bitcoin community was predictable and immediate. “No,” said the majority. Michael Saylor’s camp pointed out that Bitcoin’s fixed supply is the bedrock of its value proposition. Change that, and you destroy the narrative. The proposal has zero chance of being implemented. But dismissing it as irrelevant misses the deeper lesson.
Let me walk through the numbers because the code does not lie, but it can be misunderstood.
As of mid-2026, approximately 95.5% of all Bitcoin that will ever exist has already been mined. The remaining 0.5% will trickle out over the next 114 years. The block subsidy today is 3.125 BTC per block, worth roughly $150,000 at current prices. Transaction fees contribute only about 2% of that total. If this ratio holds, post-2140, miners will earn around $3,000 per block in fees—not enough to secure a multi-trillion dollar network.
Ben-Sasson’s 4% inflation target would create a permanent issuance of roughly 840,000 new BTC per year. That’s a massive change in supply dynamics. But he frames it as a hedge against the unknown loss rate. If 3-4% of all BTC is lost annually (to forgotten keys, dead holders, burned addresses), then 4% inflation would keep the circulating supply stable. The problem is that we have no reliable data on actual loss rates. The assumption is untestable.
What makes this debate technically interesting is not the proposal itself, but the alternative mechanism Zcash co-founder Zooko Wilcox offered in response. Wilcox rejected Ben-Sasson’s inflation model and instead endorsed a “voluntary burn and remint” system being developed by Shielded Labs. Under that design, users voluntarily destroy a portion of their transaction fees (about 60%, or roughly 210 ZEC per year). The network then uses that burned value to create new coins for miners, preserving the 21 million cap. It is clever but fragile. The mechanism requires active user participation. It is a voluntary tax. In practice, it may not collect enough.
From my experience auditing smart contracts for early DeFi protocols, I have seen how quickly complex incentive mechanisms break. The “burn and remint” path adds a new layer of governance friction. It creates a situation where the protocol depends on human altruism rather than hard-coded rules. That is a risk. Trust is earned in drops and lost in buckets.
During the 2022 winter, I audited the reserve proofs of five major lending protocols. Three of them had hidden solvency issues that would have wiped out users if I had not flagged them. That experience taught me that technical transparency is the only reliable safety net. The Zcash proposal is still a concept—no code, no testnet. Wilcox’s alternative is further along but still unverified.
The core insight here is not about Zcash or even about Bitcoin’s supply cap. It is about the trade-off between scarcity and security. Bitcoin’s fixed supply is a powerful narrative, but it comes with an expiration date. The block subsidy is a time bomb. No one knows whether transaction fees will ever rise high enough to replace it. The market today assumes they will, but that assumption is based on faith, not data.
This is where the contrarian angle matters. Most analysts dismiss Ben-Sasson’s proposal as fringe. I think the fringe is pointing at a real blind spot. The Bitcoin community’s reaction—immediate rejection without engaging the underlying math—is itself a risk. It mirrors the behavior of Terra’s community before the collapse. In the silence of the dip, the weak hands break. But here, the “dip” is not price; it is a slow decay in security budget.
Monero already runs a permanent block reward model. It adopted a tail emission of 0.6 XMR per block in 2022. That network has not collapsed. Its hash rate is stable. Transaction fees cover a measurable portion of miner revenue—around 30% on busy days. Monero’s market cap is tiny compared to Bitcoin, but it provides a real-world experiment in perpetual issuance. If Monero’s security budget holds up over the next decade, it will validate Ben-Sasson’s core argument: a low, predictable inflation rate can sustain network security without destroying price.
The more immediate technical signal comes from Zcash’s own development. Sean Bowe, a lead engineer at Zcash, has been applying formal verification to the Ironwood pool—a privacy pool that processes shielded transactions. Formal verification proves that the code has no hidden bugs. This work is orthogonal to the monetary policy debate, but it shows that Zcash is investing in long-term robustness. If the audit by Trail of Bits or OpenZeppelin comes back clean, it could boost Zcash’s credibility as a privacy-first layer one.
What does this mean for a trader? Very little in the short term. The market has priced in zero probability of Bitcoin’s supply cap changing. Zcash’s price may move a few percent on the formal verification news, but that is noise. The real opportunity is in understanding the narrative shift that might happen after the next halving in 2028.
Here is the forward-looking thought: If Bitcoin transaction fees remain below 5% of the block subsidy for the next two cycles, the security budget discussion will move from academic circles to mainstream media. At that point, Monero and Zcash will be referenced as case studies. Their monetary policy models will gain attention. The capital that has been sitting on the sidelines, waiting for a reason to rotate out of Bitcoin, may finally find it.
Until then, watch the fee data. Watch the hash rate distribution. And remember: trust is earned in drops and lost in buckets. The code does not lie, but the narrative around it can be dangerously incomplete.
