Zcash NU7 Upgrade Testnet Launched, Block Generation Time Reduced from 75 Seconds to 25 Seconds

The privacy digital asset Zcash (ZEC) has launched its next network upgrade, 'NU7', on a public testnet. The target block generation time has been reduced from the previous 75 seconds to 25 seconds. NU7 was activated at testnet block 4,465,026, which was created two days earlier than expected on the 4th. The development team plans to decide on the mainnet implementation after reviewing the results of the testnet operation on the 20th. The current completion target date is November 5th. The main change in NU7 is the reduction of the block generation interval, where the target block interval is decreased from 75 seconds to 25 seconds, resulting in a threefold increase in the number of blocks generated in the same time period. The average target time for the first transaction confirmation is also reduced from 75 seconds to 25 seconds. However, the issuance rate of ZEC will maintain the existing schedule by adjusting the block rewards. NU7 also includes a network sustainability mechanism, where 40% of transaction fees are received by miners and 60% are reserved. NU7 will deactivate version 4 transactions used in the existing privacy system 'Sprout', and once applied to the mainnet, ZEC remaining in the existing Sprout shield pool cannot be used in the traditional manner.

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