Schnorr Signatures

Bitcoin and Ethereum are moving post-quantum planning into sharper focus as U.S. support for quantum hardware expands. Developers are not treating the threat as immediate, but migration timelines are increasingly clustering around a 2029 planning horizon.

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.