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Following
ZEC Zcash NU7 upgrade: Is the block time getting longer or faster? There are differences in reports from multiple parties
Different media have given completely different interpretations of the specific impact of the Zcash NU7 upgrade. TronWeekly began by claiming that NU7 will bring "longer block times," while CoinTurk News EN, TheNewsCrypto and CryptoNewsZ all reported the opposite-that is, block times have been shortened from 75 seconds to 25 seconds.
Consensus content
Although there is controversy over block time, all sources have reached agreement on the following key information:
- Test network activation: NU7 was activated on the public test network at 18:21:45 UTC on October 4, corresponding to a block height of 4,465,026.
- Mainnetwork deployment goals: is currently planned to be deployed on the main network on November 5, and the final decision will be made on October 20.
- Network sustainability mechanism: NU7 introduces a new network sustainability mechanism that redirects some transaction fees to future block rewards rather than paying them in full immediately to miners.
- Transaction version invalid: NU7 invalidates version 4 transactions, which affects funds stored in the Sprout pool; holders must transfer Sprout funds before mainnet activation, otherwise the funds will not be spent.
- Supply cap remains unchanged: Under NU7, ZEC's supply cap of 21 million units and release schedule remain unchanged.
Reporting divergence points
1. Does NU7 extend or shorten Zcash's block time?
This upgrade is accompanied by major changes to the Zcash network, but in terms of the description of core parameter adjustments, various media have different opinions:
TronWeekly (2026-10-05 12:45)
The report pointed out that the main feature of NU7 is to reduce the interval between target blocks, but judging from its opening description, there are contradictions. The article mentions significant changes including "longer block times."
CoinTurk News EN (2026-10-05 10:57)
clearly reported that NU7 reduced Zcash's target block time from 75 seconds to 25 seconds.
TheNewsCrypto (2026-10-05 12:18)
points out that the biggest change is to reduce Zcash's block interval from 75 seconds to 25 seconds.
CryptoNewsZ (2026-10-05 12:11)
also reported on plans to reduce Zcash block time from 75 seconds to 25 seconds.
How to verify the truth
The most reliable way to resolve this controversy is to consult the NU7 specification document published by Zcash Foundation, or view the block interval data recorded in the testnet browser ZecBlock.
Analysis and Recommendations
Given that the testnet activation blocks, the main net target date of November 5, the decision date of October 20, and changes in fee sharing and Sprout pools are consistent across all reports, it is recommended that this information be treated as a given fact.
However, the "longer block time" described by TronWeekly at the beginning conflicts with its subsequent body content and all other media reports (i.e., shortened from 75 seconds to 25 seconds). Therefore, this specific phrase should not be relied on as accurate information. When handling such news, most authoritative sources and official technical specifications should govern.
