Zcash Backs Faster 25-Second Blocks
Zcash holders have delivered a strong signal about the future direction of the privacy-focused blockchain. In a recent coinholder poll, participants overwhelmingly supported reducing Zcash block times from 75 seconds to just 25 seconds.
The proposal could make the network feel significantly faster for everyday users. However, holders also chose to preserve one of Zcash’s most recognisable economic features: its Bitcoin-style halving schedule.
Nearly 2.4 million ZEC participated in the poll, representing roughly two-thirds of the approximately 3.6 million ZEC eligible to vote. Around 2.397 million ZEC supported the move towards 25-second blocks, while only a small amount opposed the proposal.
The result provides a clear indication of what participating ZEC holders want from the next major Zcash network upgrade. Yet the changes are not live.
So, what would Zcash 25-second blocks actually mean, and what needs to happen next?
Why Zcash Holders Want 25-Second Blocks
At the centre of the vote was ZIP 218, a proposal designed to reduce the target time between Zcash blocks.
Currently, the target sits at 75 seconds. Under the proposal, that would fall to 25 seconds.
The practical benefit is straightforward. Transactions could receive their first confirmation considerably faster. ZIP 218 is expected to cut the average wait for a first confirmation by roughly three times.
That could improve the overall experience of using Zcash, particularly when speed matters.
Cryptocurrency users have become accustomed to increasingly responsive blockchain networks. Therefore, reducing confirmation times could help Zcash remain competitive while maintaining its focus on privacy.
Importantly, faster blocks would not automatically mean more ZEC entering circulation each day. The reward issued for each block would also be adjusted to account for the higher number of blocks being produced. Consequently, the change is designed to preserve the network’s overall issuance model and maximum supply.
Zcash Holders Choose to Keep the Halving Model
Transaction speed was not the only major issue put before ZEC holders.
Participants also considered whether Zcash should maintain its existing halving system or move towards a smoother issuance model.
The result strongly favoured the status quo.
Approximately 2.376 million ZEC supported retaining halvings, compared with around 22,385 ZEC backing smoother issuance. That equated to roughly 98.9% support for keeping the existing halving approach among the weighted vote.
Zcash’s halving structure shares similarities with Bitcoin’s monetary model. Block subsidies are periodically reduced rather than gradually declining over time.
Interestingly, a separate Zcash Community Advisory Panel poll was far more closely divided. In that poll, 57 participants supported smoother issuance, while 54 preferred retaining halvings.
That difference highlights how opinions can vary depending on the governance group and voting method being considered.
Privacy Played a Role in the Zcash Vote
The way the vote was conducted was particularly relevant for a blockchain built around privacy.
Eligibility was based on spendable shielded ZEC held within the Ironwood pool at a specific snapshot. Each eligible ZEC represented one vote.
However, individual balances and voting choices did not have to be publicly revealed.
The ballots were encrypted and structured so the overall result could be calculated without exposing individual voter identities.
This allowed Zcash to explore coinholder governance while retaining the privacy principles that have long formed an important part of the network.
Around two-thirds of eligible ZEC participated in the process. That level of participation also provides useful insight into the preferences of holders who chose to take part.
Faster Zcash Blocks Bring Technical Challenges
Although Zcash 25-second blocks could deliver noticeably quicker confirmations, increasing block frequency is not without technical trade-offs.
Blocks need enough time to propagate across a decentralised network.
When blocks are created more frequently, miners and nodes have less time to receive information about the latest block before another appears. This can increase the risk of stale blocks and temporary forks.
ZIP 218 estimates that the theoretical stale-block rate could reach around 3.26%, compared with approximately 0.4% under current conditions.
Meanwhile, a geographically distributed Zebra-node test using 2MB blocks reportedly produced a 4.86% stale rate and a 0.37% fork rate.
These figures do not necessarily prevent the proposal from moving forward. However, they illustrate why extensive testing will be important.
Speed alone cannot determine whether a blockchain upgrade succeeds.
Reliability, network propagation and infrastructure requirements will also need careful consideration before activation.
What Happens Next for Zcash?
Crucially, the vote does not mean Zcash block times have already changed.
The result acts as a governance signal rather than automatically rewriting the network’s consensus rules. Developers still need to complete implementation work, reviews, testing and wallet support before preparing an activation plan.
The proposed changes are associated with NU7, Zcash’s next major network upgrade.
Coinholders also supported several other decisions connected with the upgrade. These included delaying Network Sustainability Mechanism fee reissuance until February 2031 and disabling transactions linked to the older Sprout privacy system.
As a result, the coming development phase will be crucial.
The community has indicated what it wants. Developers must now determine how those preferences can be implemented safely and effectively.
What Could 25-Second Blocks Mean for Zcash?
If successfully introduced, faster blocks could make Zcash transactions noticeably more responsive.
That matters because user experience remains an important battleground across the cryptocurrency industry. People increasingly expect blockchain transactions to be quick as well as secure.
At the same time, Zcash is not abandoning its established monetary structure to achieve greater speed.
The vote suggests participating holders broadly support improving network performance while maintaining scheduled halvings. In other words, the preference expressed through the poll was for technical evolution without a fundamental rewrite of ZEC’s issuance philosophy.
However, execution will determine the real impact.
Shorter block times must work reliably across a geographically distributed network. Wallet providers will also need to support any relevant changes, while developers must carefully examine the effect on miners, nodes and network stability.
Final Thoughts
The Zcash 25-second blocks proposal represents a potentially significant change for the privacy-focused blockchain.
Nearly 2.4 million ZEC participated in the coinholder vote, with overwhelming weighted support for reducing block times and retaining the existing halving schedule.
However, voting is only one stage of the process.
Development, testing, reviews and eventual network activation still need to take place. Therefore, users should not expect 25-second blocks simply because the proposal received strong support.
Nevertheless, the vote establishes a clearer direction for NU7. Zcash holders who participated have signalled support for faster confirmations while keeping the network’s established halving structure intact.
The next challenge is turning that preference into a reliable network upgrade.
