# A Post-Quantum Chain Runs on a Laptop, and Researchers Ask Whether the Standards Even Agree

One developer built and launched a public testnet where authorization, state transitions and validity from genesis all run on a single post-quantum proof stack, as a new paper argues cross-implementation agreement on standard test vectors is rarely stated precisely enough to verify.

- Published: 2026-08-17T05:44:33.122Z
- Canonical: https://polylog.news/crypto/2026-08-17/a-post-quantum-chain-runs-on-a-laptop-and-researchers-ask-wh
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Ethereum Research](https://ethresear.ch/t/ethereum-lessons-from-a-live-end-to-end-pq-proof-native-protocol/25730), [arXiv cs.CR](https://arxiv.org/abs/2608.13784), [arXiv cs.CR](https://arxiv.org/abs/2608.13685)

Quantum resistance has moved from conference discussion into running code. A researcher posting to Ethereum Research describes taking the clean-slate route and launching a public testnet in which wallet authorization, state transitions and…

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