Zcash developers are pushing for another cut to block times, proposing a 20-second target just days after the network completed a major speed upgrade. The proposal follows early data showing the orphan-block rate has held close to pre-upgrade levels even though blocks are now arriving three times faster, according to the developers behind the effort.
What the orphan-rate data shows
Before the recent upgrade, Zcash blocks were produced on a slower schedule. The upgrade tripled the pace, and the concern was that faster blocks would lead to more orphans — blocks that get mined but are left out of the main chain because another block wins the race. So far, that hasn't happened. The orphan-block rate has stayed near where it was before the speed-up, a result the developers describe as an encouraging signal.
That stability is the main argument for going further. If the network can handle three-times-faster blocks without a spike in orphans, the thinking goes, it may be able to handle an even shorter interval. The proposal would set a 20-second block time, though the developers haven't said when a decision will be made or how a change would be rolled out.
Why orphan rates matter for a faster chain
Orphan blocks are a rough measure of how well a network handles speed. When blocks come quickly, miners can find competing blocks at nearly the same moment. One gets accepted, the other is discarded. A rising orphan rate means wasted mining effort and more chain reorganizations, which can unsettle wallets, exchanges, and anyone relying on confirmed transactions.
Keeping that rate flat while cutting block times is the technical bar developers are trying to clear. The early Zcash numbers suggest the network's propagation and mining setup absorbed the first speed increase without obvious strain. Whether that holds at 20 seconds is the open question the proposal is meant to test.
The upgrade timeline
The latest speed-up is only days old, which makes the new proposal unusually quick. Developers are treating the early orphan data as a green light to start the conversation rather than a final verdict. No formal schedule for the 20-second change has been published, and the proposal is still at the discussion stage.
Zcash has changed its block times before, and each adjustment requires coordination across miners, node operators, and the wallets and services that track the chain. A move to 20 seconds would be the shortest interval yet for the network, putting more pressure on the infrastructure that has to keep up.
What comes next
The developers haven't set a date for a final decision or a network upgrade. For now, the orphan-rate data is the number to watch. If it stays flat as the current faster blocks accumulate, the case for 20-second blocks gets stronger. If it starts to climb, the proposal will likely stall. Zcash users and miners will find out which way it goes as more post-upgrade blocks are produced and the orphan figures are updated.
