protocol
Zcash node developer Zakura ships private information retrieval in Vizor this week and plans hash-based signature opcodes on transparent addresses for January.
regulation
Winklevoss Asset Services filed an S-1 October 6 for a spot ZEC ETF listing on Nasdaq under ticker WINK, Gemini as custodian, with Winklevoss Capital Fund signaling up to $100M in seed interest.
protocol
NU7 cut Zcash's target block time from 75 to 25 seconds at testnet block 4,465,026 on Oct 4, with mainnet activation scheduled for Nov 5 if a Oct 20 review clears.
exploit
ZachXBT flags 2,700 ZEC (~$3.8M) into Zcash's Ironwood shielded pool after Near Intents' SHIELD system blocks $50M of the Bitget hacker's cross-chain swaps.
protocol
Core devs pin NU6.3 to mainnet block 3,428,143 (~Jul 28, 08:00 EST). Orchard becomes spend-only; new shielded value flows through a turnstile into the Ironwood pool.
protocol
An under-constrained Orchard circuit could have minted undetectable counterfeit ZEC. Zcash froze the pool with a June 2 soft fork, then re-enabled it via NU6.2 the next day.
protocol
Zcash Foundation ships Zebra 4.5.0 plus a 4.5.1 hotfix, closing 15 advisories including a critical P2SH disabled-opcode sigop undercount that could split the chain.