Blockchain data suggests that NU7 activated at block 3,543,405 on November 6, reducing Zcash's target block interval from 75 seconds to 25 seconds. The upgrade enables confirmations approximately three times faster, potentially improving payment efficiency for merchants, exchanges and wallet users.
Zakura's engineering tests, conducted across 80 computers in 11 regions, showed that discarded blocks increased from 1.57% to 3.43% under demanding conditions. NU7 also introduced a Network Sustainability Mechanism allocating 40% of transaction fees to miners and reserving 60% for future rewards.
The upgrade additionally disabled the older Sprout privacy pool, leaving approximately 12,224 ZEC inaccessible pending any approved recovery mechanism.
