Blab Crypto
Vitalik Buterin Assigns 60% Chance to Cheap Advanced Cryptography, Shaping Ethereums Privacy Future
On September 6, 2026, Ethereum co‑founder Vitalik Buterin posted a probability assessment that shook the community: advanced cryptographic primitives—SNARKs, fully homomorphic encryption (FHE), and indistinguishability obfuscation (iO)—each have a 60 % chance of operating at less than ten times the cost of ordinary computation. He added that there is a 33 % chance all three could reach near‑zero overhead once they scale.
Buterin’s numbers carry weight because the trio sits at the core of Ethereum’s long‑term privacy agenda. SNARKs already let users prove a computation’s correctness without exposing the data. FHE would enable parties to compute on encrypted data, preserving shared state. iO could hide a program’s logic itself, potentially removing the need for trusted intermediaries.
The forecast does not signal an imminent breakthrough. Buterin noted a strong possibility that at least one primitive—most likely SNARKs—will hit single‑digit overhead by the decade’s end, though he did not attach a specific deadline.
Ethereum can advance privacy without all three technologies becoming cheap. The network’s roadmap divides privacy into private reads, private writes, and private proving. Existing tools—anonymous RPC systems, private information retrieval, oblivious RAM, and light clients—already reduce the amount of personal data exposed when users query the chain. Proposals such as frame transactions, inclusion lists, and keyed nonces aim to separate fee payment from transaction origin, making activity harder to correlate, but they remain unimplemented.
SNARKs are the most mature of the three. They allow users to submit shielded transfers or anonymous voting data while keeping the underlying values hidden. Yet privacy can still leak through wallet reuse, RPC providers, public inputs, or weak anonymity sets.
FHE remains the most expensive. A 2026 benchmark required multi‑gigabyte cryptographic artifacts and more than six hours of encrypted computation for a small BERT workload. While specialized coprocessors, narrower workloads, or threshold‑decryption can mitigate costs today, they add infrastructure and new trust assumptions. If FHE were to reach single‑digit overhead, shared encrypted state could become routine, enabling private automated market makers, confidential lending pools, and sealed‑bid auctions.
Indistinguishability obfuscation is still far from practical deployment. If it becomes viable, it could reduce the role of auditors, custodians, clearinghouses, and exchanges—businesses that depend on acting as trusted observers.
Buterin’s 60 % scenario would accelerate all three layers, potentially making privacy far cheaper and more composable. The remaining 40 % does not mean Ethereum privacy will fail; it simply suggests uneven progress, with specialized systems arriving before general encrypted computation becomes affordable.
In short, Ethereum’s privacy future is a progression rather than a single breakthrough. Existing zero‑knowledge tools can improve privacy today, while cheaper SNARKs, FHE, and iO would unlock deeper layers of confidentiality. The next decade will likely see incremental upgrades to private transaction mechanisms, continued research into FHE performance, and ongoing debate over the feasibility of iO.
At present, Ethereum’s market position remains strong, with the network’s native token, Ether, trading near its 24‑hour low of $1,200. The community continues to monitor advances in cryptographic research, regulatory developments, and potential protocol upgrades that could bring the promised privacy enhancements to fruition.
Buterin’s numbers carry weight because the trio sits at the core of Ethereum’s long‑term privacy agenda. SNARKs already let users prove a computation’s correctness without exposing the data. FHE would enable parties to compute on encrypted data, preserving shared state. iO could hide a program’s logic itself, potentially removing the need for trusted intermediaries.
The forecast does not signal an imminent breakthrough. Buterin noted a strong possibility that at least one primitive—most likely SNARKs—will hit single‑digit overhead by the decade’s end, though he did not attach a specific deadline.
Ethereum can advance privacy without all three technologies becoming cheap. The network’s roadmap divides privacy into private reads, private writes, and private proving. Existing tools—anonymous RPC systems, private information retrieval, oblivious RAM, and light clients—already reduce the amount of personal data exposed when users query the chain. Proposals such as frame transactions, inclusion lists, and keyed nonces aim to separate fee payment from transaction origin, making activity harder to correlate, but they remain unimplemented.
SNARKs are the most mature of the three. They allow users to submit shielded transfers or anonymous voting data while keeping the underlying values hidden. Yet privacy can still leak through wallet reuse, RPC providers, public inputs, or weak anonymity sets.
FHE remains the most expensive. A 2026 benchmark required multi‑gigabyte cryptographic artifacts and more than six hours of encrypted computation for a small BERT workload. While specialized coprocessors, narrower workloads, or threshold‑decryption can mitigate costs today, they add infrastructure and new trust assumptions. If FHE were to reach single‑digit overhead, shared encrypted state could become routine, enabling private automated market makers, confidential lending pools, and sealed‑bid auctions.
Indistinguishability obfuscation is still far from practical deployment. If it becomes viable, it could reduce the role of auditors, custodians, clearinghouses, and exchanges—businesses that depend on acting as trusted observers.
Buterin’s 60 % scenario would accelerate all three layers, potentially making privacy far cheaper and more composable. The remaining 40 % does not mean Ethereum privacy will fail; it simply suggests uneven progress, with specialized systems arriving before general encrypted computation becomes affordable.
In short, Ethereum’s privacy future is a progression rather than a single breakthrough. Existing zero‑knowledge tools can improve privacy today, while cheaper SNARKs, FHE, and iO would unlock deeper layers of confidentiality. The next decade will likely see incremental upgrades to private transaction mechanisms, continued research into FHE performance, and ongoing debate over the feasibility of iO.
At present, Ethereum’s market position remains strong, with the network’s native token, Ether, trading near its 24‑hour low of $1,200. The community continues to monitor advances in cryptographic research, regulatory developments, and potential protocol upgrades that could bring the promised privacy enhancements to fruition.
