Zcash developers have selected block 3,543,405 as the activation point for the network's next upgrade, known as NU7, a choice that points toward a November 5 launch and faster transaction confirmations for ZEC users. Because Zcash activates upgrades at a predetermined block height rather than a fixed calendar date, the exact timing depends on how quickly blocks are produced, and it remains provisional until developers complete the required software changes.

On October 20, developer Sean Bowe proposed the activation height following an agreement among Zcash Improvement Proposal editors. The proposal, captured in a pull request to the Zcash Improvement Proposals repository, advances the upgrade process but does not by itself guarantee a November launch. Activation heights give node operators, wallet providers, and exchanges a fixed reference point to prepare their software ahead of a rule change.

Upgrade Targets Threefold Confirmation Speed Increase

NU7 will shorten the average interval between blocks from 75 seconds to 25 seconds. Because new blocks would arrive roughly three times as often, users could receive confirmations about three times faster than they do today. Confirmation speed is among the most user-visible properties of any blockchain, shaping how long deposits, payments, and trades take to finalize.

An exchange requiring three confirmations, for example, could cut a typical deposit wait from nearly four minutes to roughly 75 seconds. Actual completion times would still depend on network conditions and individual exchange policies.

The upgrade has been running on a public testnet since early October. Its planned rollout follows a volatile stretch for the ZEC token, with recent market data showing a decline of roughly 30% over the past month.

Withheld Fees Scheduled to Return to Miners in 2031

NU7 also introduces a fee rule under which 60% of transaction fees are moved out of circulation when miners produce blocks. Rather than destroying those funds permanently, the protocol records them for later distribution, with the network planning to begin releasing the withheld amounts to miners around February 2031. The mechanism therefore works as a temporary withdrawal from circulation rather than a permanent burn.

Developers designed the arrangement to preserve the existing four-year halving cycle and avoid raising ZEC's maximum supply. Zcash holders previously supported keeping that reward schedule, a vote covered alongside renewed attention to the November upgrade in recent reporting on ZEC trading and network changes.

Sprout Holders Deadline Before Activation

Another NU7 change disables version 4 transactions, which currently support transfers from Sprout, Zcash's original shielded pool, a component dating to the network's 2016 launch. Once that rule takes effect, coins remaining in Sprout cannot move under the new rules, leaving holders responsible for moving their funds to supported addresses before the upgrade activates. The targeted activation window gives wallet providers and users a defined period to complete those migrations.

Newer shielded pools will continue operating as before, and NU7 will not introduce an entirely new transaction format.

Interest in privacy technology extends beyond individual transfers; recent discussions of financial blockchain privacy have examined institutional confidentiality needs even as Zcash developers prepare software for a faster network. As of Wednesday morning, Bowe's proposal had received two approvals but had not yet entered the official deployment specification, leaving its inclusion in that specification, the completion of the required software changes, and Sprout migration progress as the checkpoints to watch ahead of the targeted November 5 activation.