A ZK quantum solution for Bitcoin 🔐

Researchers have proposed ZKPoSP, a new post-quantum signature scheme that could protect Bitcoin against Q-Day while retaining existing wallet addresses.

Author

Stephen Graves
July 30, 2026

📝 What you need to know

With concerns about quantum hardware advances ramping up, the race to protect Bitcoin from “Q-Day” is gathering pace. Security firm AmericanFortress is the latest to weigh in, with a proposal to swap Bitcoin's elliptic curve signatures for zero-knowledge proofs, letting holders prove they control a wallet's seed phrase rather than an individual key.

The appeal is that existing addresses survive, so nobody has to move funds before Q-Day. Prototype benchmarks put proof generation at 12 to 13 seconds and verification at 9 to 10 milliseconds. There are snags, though: no network has yet adopted it, and deployment would need wallets, exchanges and miners to agree. And that, as the ongoing spat over BIP-110 shows, is a tall order.

There's a New Way to Protect Bitcoin From Future Quantum Attacks, Researchers Say

New research outlines a cryptographic approach that could allow Bitcoin wallets to remain compatible with existing addresses post-quantum.

Bitcoin · BTCJuly 30, 2026
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