Nist

Blockstream researchers have introduced SHRINCS, a proposed Bitcoin signature method designed to resist future quantum attacks while limiting pressure on block space. The draft remains early, with a pending security proof, non-production reference software, and a path to Bitcoin that would require a soft fork and broad network support.

Anthropic’s Claude Mythos Preview model identified a weakness in HAWK, a proposed post-quantum digital-signature scheme not used by Bitcoin or Ethereum. The result does not affect current crypto transactions, but it underscores why developers are weighing migration paths before quantum-capable threats arrive.