Ethereum Can Quantum-Proof Accounts For Just 7 Cents, Says Foundation's Kohaku Project Lead
https://cointelegraph.com/news/ethereum-quantum-proof-accounts-7-cents-researcher
Ethereum could begin adding post-quantum protections to accounts for as little as $0.07, without waiting for a hard fork, according to the Ethereum Foundation's Kohaku project lead Nicolas Consigny.
In a Saturday X https://x.com/ncsgy/status/2065791130457747707, Consigny shared a https://ethresear.ch/t/sphincs-minus-efficient-stateless-post-quantum-signature-verification-on-the-evm/25165 proposing a cheaper way for Ethereum users to protect their accounts against future quantum-computing threats. The approach adapts SPHINCS+, a post-quantum signature standard developed by the US National Institute of Standards and Technology, to work more efficiently on Ethereum.
Dubbed “SPHINCS-,” the proposal aims to reduce onchain verification costs without requiring a protocol change or precompile. Consigny described SPHINCS- as a bridge toward a future post-quantum signature system dubbed “leanSPHINCS,” which aims to further reduce verification costs through aggregation.
The proposal seeks to address the long-term risk of a quantum threat to Ethereum's Elliptic Curve Digital Signature Algorithm with a cost-efficient solution that may be deployed before a dedicated hard fork is developed.
Signature scheme SPHINCs variant security degradation and onchain verification costs. Source: http://ethresearch.ch/
Future quantum computing threats stirs crypto community
In April, post-quantum startup Project Eleven awarded a prize to researcher Giancarlo Lelli for using a quantum computer https://cointelegraph.com/news/quantum-computer-was-able-to-factor-a-15-bit-ecdsa-bitcoin-cryptography-key.
Bitcoin’s keys are 256 bits long, significantly larger than the 15-bit key Lelli managed to crack. He derived the private key from a public key paired to it, using a variant of Shor’s algorithm, a quantum computing technique that theoretically poses a threat to the type of cryptography used by Bitcoin.
According to Glassnode, about 1.92 million Bitcoin, representing nearly 10% of the total supply, https://cointelegraph.com/news/nearly-10-bitcoin-supply-structurally-unsafe-quantum-breakthrough-glassnode in a future quantum attack scenario. Another 4.12 million BTC, or 20.6% of the supply, are classified as “operationally unsafe” due to key or address management practices.
Source: https://x.com/glassnode/article/2057043418694463559/media/2057040769827876864
The analytics company estimates that the remaining 69.8% of the supply, or 13.99 million Bitcoin, remains unexposed to a quantum computing threat, broadly in line with https://cointelegraph.com/news/ark-bitcoin-quantum-risk-supply-bip-360 that 65% of the supply was safe.
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Sun, 06/14/2026 - 15:10
https://www.zerohedge.com/crypto/ethereum-can-quantum-proof-accounts-just-7-cents-says-foundations-kohaku-project-lead