DECRYPT · 2026-11-06 10:13 UTC

Zcash's NU7 Upgrade Goes Live, Recycling 60% of Fees to Fund Future Block Rewards

Zcash's NU7 upgrade activated on mainnet at block 3,543,405, introducing the Network Sustainability Mechanism that removes 60% of transaction fees from circulation for later reissue through block rewards starting in 2031. NU7 also cuts target block time from 75 to 25 seconds, retires the Sprout privacy pool (about $16 million locked), and limits private transaction data per block. A stress test cited in the article measured a 3.43% orphan rate at 25-second blocks versus 1.57% at 75 seconds; developers expect the live rate to stay under 1%.

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