Update
Zcash to add post‑quantum hash‑based signatures and rotating transparent addresses
Zakura, a developer of the Zcash full node, announced that post‑quantum signature opcodes are expected to be integrated into Zcash in January. The opcodes will enable hash‑based signatures that avoid elliptic‑curve math vulnerable to AI or quantum attacks. In addition, Zakura is releasing a privacy tool this week that rotates transparent addresses after each transaction. The rotating scheme keeps public keys hidden and is combined with a Winternitz One‑Time Signature (WOTS) backup. To prevent linkability when querying balances, the tool uses private information retrieval (PIR) so wallets can fetch records without revealing which addresses are checked. The feature is currently available in the Vizor wallet, where users can enable “private queries” in the settings. The plan focuses on Zcash’s transparent pool and does not specify when the new opcodes will be activated network‑wide. The announcement comes amid broader discussions about AI‑driven cryptographic risks and growing institutional interest in Zcash.