## Zcash’s 25-second blocks go live on public testnet ahead of schedule ## NU7 cuts the target block time from 75 seconds to 25, giving exchanges, wallets and developers a live rehearsal before a planned November mainnet launch. - Zcash activated its NU7 upgrade on a public test network, cutting the targeted block time to 25 seconds from 75 seconds ahead of a planned Nov. 5 mainnet rollout. - The upgrade redirects 60% of transaction fees to a reserve for future mining rewards, reduces per-block rewards to preserve ZEC’s issuance schedule and disables transactions using the older Sprout…