# Blockstream Swept 25,935 Parameter Sets to Shrink a Post-Quantum Bitcoin Signature Scheme by a Quarter

The research effort refines SHRINCS, a hash-based signature design that already produces signatures roughly 24 times smaller than the U.S. government's SLH-DSA post-quantum standard, and published an open-source tool so anyone can verify or improve the parameter choices.

- Published: 2026-08-07T14:25:07.977Z
- Canonical: https://polylog.news/crypto/2026-08-07/blockstream-swept-25-935-parameter-sets-to-shrink-a-post-qua
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Blockstream Blog](https://blog.blockstream.com/searching-for-shrincs-parameters/)

Blockstream Research published details of a parameter search behind SHRINCS, a post-quantum signature scheme the firm has been developing as a potential future upgrade path for Bitcoin. SHRINCS combines a stateful signing tree for compact e…

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