- ZCash activated NU7 upgrade on testnet on October 4 at block 4,465,026.
- NU7 aims to reduce target block spacing from 75 seconds to 25 seconds.
- The upgrade disables version 4 transactions and integrates a Network Sustainability Mechanism.
- Mainnet activation is targeted for November.
Zcash activated its NU7 network upgrade on testnet on October 4, moving the planned protocol changes into live testing about a month before its targeted mainnet activation. According to testnet block explorer ZecBlock, block 4,465,026 — NU7’s scheduled activation point — was mined at 18:21:45 UTC.
Zcash confirmed the activation in a post on X, saying NU7 was live on testnet. NU7 is Zcash’s next network upgrade and seeks to reduce the network’s target block spacing from 75 seconds to 25 seconds.
Consequently, the upgrade also disables version 4 transactions and integrates a Network Sustainability Mechanism that redirects part of transaction fees into future block rewards. The mainnet rollout is planned for November, giving developers several weeks to assess the changes.
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