Zcash sets NU7 upgrade for block 3,543,405 around Nov 5, cutting block time to 25 seconds

Zcash developers have agreed to activate the NU7 network upgrade at block 3,543,405, which is expected to occur around Nov 5, 2026. The upgrade will reduce the target block interval from 75 seconds to 25 seconds, temporarily remove 60 % of transaction fees into a reserve that will be paid back to miners starting February 2031, and disable the legacy Sprout privacy system, making any remaining Sprout funds unspendable. The market reacted positively, with ZEC trading up about 12 % in the 24 hours after the activation height was announced.

The price rally reflects trader optimism that faster block times and the fee‑reserve mechanism could improve network utility and security. The fee reserve will reduce circulating supply until 2031, which may affect ZEC’s supply‑demand dynamics for investors holding the coin.

  • 1The NU7 upgrade activation height is set at block 3,543,405.
  • 2The activation is expected around Nov 5, 2026.
  • 3Block time will be cut from 75 seconds to 25 seconds.
  • 460 % of transaction fees will be removed from circulation and held in a reserve until February 2031.
  • 5The original Sprout privacy system will be disabled, making any Sprout funds unspendable after activation.
  • 6ZEC rose about 12 % in the 24 hours after the activation height was announced, trading near $1,270.

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