Zcash Developers Propose Reducing Block Interval to 20 Seconds

on November 9, according to CoinDesk, Zcash developers Dev Ojha and Evan Forbes proposed shortening the target block interval from 25 seconds to 20 seconds, and hope to discuss it during the next community vote, potentially incorporating it into the future NU7.1 upgrade. The proposal has not yet been approved, and no activation date has been determined.

Zcash recently reduced the target block interval from 75 seconds to 25 seconds in the NU7 upgrade. If implemented, the expected wait time for transactions requiring three confirmations would drop from 75 seconds to 60 seconds, although actual wait times may still vary.

Tests conducted by developers across 80 miners in 12 regions show that the stale block rate for 20-second blocks ranges from 1.9% to 3.3%, depending on the software used. The proposal also reduces the private transaction capacity per block to maintain the same daily capacity, issuance schedule, and 21 million supply cap.