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News/Crypto

Zcash NU7 upgrade targets November mainnet with 25-second blocks

25-second block times are the structural headline of NU7, Zcash's next network upgrade, which targets November for mainnet activation. Testnet activation is planned for Oct. 6. NU7 will also preserve the network's existing halving schedule.

By Kwame Asante·Sep 18, 2026·1 min read·crypto

Key takeaways

  • Zcash's NU7 network upgrade targets November 2026 for mainnet activation.
  • NU7's primary protocol change is cutting the block time to 25 seconds.
  • Testnet activation for NU7 is planned for Oct. 6.
  • NU7 preserves the network's existing halving schedule, keeping the supply issuance curve intact.

25-second block times are the structural headline of NU7, Zcash's next network upgrade, which targets November for mainnet activation. Testnet activation is planned for Oct. 6. NU7 will also preserve the network's existing halving schedule.

Parameter NU7 value
Block time 25 s
Testnet activation Oct. 6
Mainnet target November (projected)
Halving schedule Preserved

The block time cut is the upgrade's primary protocol change. Short. Preserving the halving schedule means the block reward timeline carries forward unchanged into the faster cadence, keeping the supply issuance curve intact even as the base-layer rhythm tightens.

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Frequently asked

When will the Zcash NU7 upgrade go live?

NU7 targets November for mainnet activation, with testnet activation planned for Oct. 6.

What is the main change introduced by NU7?

The main change is a reduction in block time to 25 seconds, tightening the base-layer cadence.

Does NU7 change the Zcash halving schedule?

No, NU7 preserves the existing halving schedule, so the block reward timeline and supply issuance curve carry forward unchanged.