Zcash Devs Target January 2027 for Quantum-Resistant Signatures; ~70% of ZEC Sits in Transparent Pool

The quantum-resistant work is aimed at the transparent pool, which is where the large majority of ZEC actually sits — so the upgrade path touches the part of the supply most exposed and most used, not the shielded set the project is best known for. That framing matters: a post-quantum signature scheme that only covers transparent transactions leaves the privacy architecture's own cryptographic assumptions unaddressed. Whether the January 2027 target holds, and whether activation scope later extends beyond transparent transfers, is the open question.