Zcash targets November upgrade to make private payments up to three times faster
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Summary
Zcash developers plan to implement the NU7 upgrade around November 5, aiming to reduce block times from 75 seconds to 25 seconds to accelerate private payments. The upgrade includes temporarily removing about 60% of transaction fees from circulation, with those funds returning as mining rewards from February 2031. It maintains Zcash’s existing issuance and halving schedule by adjusting block rewards and halving intervals. A final decision on activation is scheduled for October 20.
Why it matters
The upgrade is intended to make private payments on Zcash significantly faster, enabling quicker transaction confirmations that improve usability for direct wallet-to-wallet payments. While still slower than card payments, the reduced block time could make private blockchain payments more practical for everyday use. The source does not elaborate further on broader market or policy impacts.
Key context
Zcash enables shielded payments that hide sender, recipient, and amount, protecting user privacy in contrast to transparent public blockchains. Blocks are collections of transactions, and block confirmations establish transaction finality. The NU7 upgrade aligns with the consensus of major Zcash development teams and a community vote where a large majority supported retaining the halving schedule and the fee return timing.
Key numbers and entities
The Zcash developer groups involved include the Zcash Foundation, Project Tachyon, Valar, ZODL, and Shielded Labs. Approximately 2.4 million ZEC (66% eligible) participated in the upgrade vote, with 98.9% favoring the current halving schedule and 96.6% endorsing fee returns starting February 2031. The halving interval extends from 1.68 million to 5.04 million blocks, and the block time target drops to 25 seconds from 75 seconds. ZIP-235 proposes removing 60% of transaction fees temporarily.
What remains unclear
The exact date for the NU7 mainnet launch remains tentative, pending the October 20 activation decision. Details on potential impacts for user wallets, beyond the statement that significant changes are not expected, and the broader industry or economic implications of fee removals and returns are not specified. The source does not comment on how miners or exchanges might respond to the changes.