Ethereum

    Ethereum’s Vitalik Buterin puts 60% odds on a cryptography breakthrough

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    Vitalik Buterin sees a 60% chance that advanced cryptography becomes cheap enough to reshape Ethereum privacy.

    On Sept. 6, the Ethereum co-founder said there is a 60% probability that SNARKs, fully homomorphic encryption and indistinguishability obfuscation will eventually operate at less than 10 times the cost of ordinary computation. He put the odds at 33% that all three could approach near-zero additional overhead at sufficient scale.

    The forecast reaches well beyond hiding transactions.

    Cheap SNARKs could make private proofs easier to generate. Fully homomorphic encryption (FHE) could let applications compute directly on encrypted data. Indistinguishability obfuscation (iO) aims to let software run without exposing its internal logic.

    Together, the technologies could move privacy from a specialized feature toward a default layer for financial and computational systems.

    Buterin’s timeline is more cautious than the probability headline suggests. He said there is a good chance that at least one of the three, probably SNARKs, reaches single-digit overhead by the end of the decade. He did not assign a probability to that specific deadline.

    Ethereum can improve privacy before the big breakthrough

    Ethereum does not need all three technologies to become cheap before meaningful privacy improvements arrive.

    Its roadmap separates privacy into private reads, private writes, and private proving, allowing progress in one area without waiting for a universal cryptographic cost collapse.

    Anonymous RPC systems, private information retrieval, oblivious RAM, and light clients can improve how users access blockchain data without exposing as much information about who they are or what they are querying.

    Infographic mapping Buterin’s 60% cryptography forecast to Ethereum privacy capabilities that can still advance and those constrained by high overheadInfographic mapping Buterin’s 60% cryptography forecast to Ethereum privacy capabilities that can still advance and those constrained by high overhead

    Private transactions have their own constraints. A transfer can still be censored before inclusion, linked through its fee payer or correlated through sequential account nonces.

    Ethereum researchers have proposed frame transactions that separate fee payment from the account performing an action, inclusion lists that force builders to include eligible transactions seen by validator committees, and keyed nonces that make activity harder to correlate. Those mechanisms remain proposals rather than guaranteed upgrades.

    Application-specific zero-knowledge systems are further ahead.

    SNARKs already allow users to prove that a private computation or statement is valid without revealing the underlying information.

    Ethereum’s existing design patterns can support uses such as anonymous voting, private claims, and shielded withdrawals, though privacy can still leak through wallet reuse, RPC providers, public inputs, or weak anonymity sets.

    That makes SNARKs the most mature part of Buterin’s three-way bet.