Zcash activates NU7 on testnet ahead of November mainnet target
Zcash’s NU7 upgrade is now live on testnet, giving developers several weeks to assess 25-second blocks and other protocol changes before a planned November mainnet activation.
Zcash's NU7 upgrade has been activated on its testnet, giving developers several weeks to evaluate the 25-second block time and other protocol changes ahead of the planned November mainnet activation. This move brings the protocol changes a month closer to the mainnet rollout. According to Zcash's testnet block explorer, ZecBlock, block 4,465,026 - the activation point for NU7 - was mined on October 4 at 18:21:45 UTC.
Zcash confirmed the activation on X, stating that NU7 is now live on the testnet. NU7 aims to reduce block spacing from 75 seconds to 25 seconds and also disables version 4 transactions while integrating a Network Sustainability Mechanism that diverts a portion of transaction fees into future block rewards. However, this change will render ZEC held in Zcash's legacy Sprout shielded pool unspendable unless users transfer the funds before NU7 fully activates.
The Zcash Foundation advised testnet operators to utilize the release candidate to test NU7 under real conditions. Testnet phase allows developers to assess the upgrade before deciding on mainnet activation. Zcash developers are set to make a final decision on mainnet activation and determine its activation height on October 20, based on their experience with NU7 on testnet. Mainnet activation is slated for November 5.
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