Hoskinson Accuses Buterin of Bias in Quantum Encryption Debate

Cardano founder Charles Hoskinson has accused Ethereum co-founder Vitalik Buterin of disparaging competing encryption methods to protect his own research. He claimed that Buterin is "bag-holding too much hash-based crypto research" and cannot back out.

This clash is more than a personal feud between two blockchain pioneers; it touches on how major networks plan to secure wallets against future quantum computers.

Why Hoskinson Believes Buterin Is Defending His Own Research

Vitalik is now trying to convince everyone that lattices are bad because he is bag-holding too much hash-based crypto research can't back out. The case against lattices is the GNFS story, a.k.a. a hunch about "structure," and a multiplier pulled out of thin air. None of it has… https://t.co/ryeeCwlENo

— Charles Hoskinson (@IOHK_Charles) October 9, 2026

A recent post by Buterin warned that AI-driven mathematical breakthroughs could weaken lattice-based encryption, one of the two main defenses against quantum computers.

His message endorses the alternative—hash-based designs—which are already part of Ethereum's long-term plan.

Hoskinson argued that Buterin is too heavily invested in that path to change course. In trading slang, a "bag holder" is someone stuck with an unwanted asset. However, Hoskinson did not entirely dismiss hash-based methods. He said they suit certain uses but remain an "algebraic dead end" for more advanced features.

He also portrayed the warning as part of a pattern. In his view, Buterin's posts have previously diverted developers from valuable research.

“He writes these damn posts that convince lots of engineers to abandon incredibly important research, and then we have to stumble back to it after years of false starts: Plasma, Ethereum 2.0, Casper, Accounts, etc etc etc. Now we are going to attack Lattices.”

Charles Hoskinson on X

Which Blockchains Could Benefit If Lattice Cryptography Holds Up

Solana's developers chose a lattice-based scheme for their quantum upgrade, while Algorand already uses that approach in parts of its network.

Hoskinson defended that choice against Buterin's doubts. He noted that lattice-based schemes have withstood 40 years of attacks, while older hash tools have already been broken.

He also dismissed Buterin's call for 10-times-larger keys as "numerology." Hoskinson further argued that a vague AI threat can never be disproven, and each year without a breakthrough simply becomes "not yet."

This is not the first instance of their rivalry. Earlier, Hoskinson claimed Ethereum was copying Cardano's core design.

Cardano has its own timeline; Hoskinson recently placed the odds of a quantum threat before 2033 above 50%.

Consequently, the clash between Hoskinson and Buterin may influence which encryption methods major chains trust before quantum machines arrive.