Gemini has replaced Zebra with Zakura software for its Zcash node infrastructure ahead of the planned NU7 upgrade, which would reduce the network's block interval to 25 seconds from 75 seconds. The latest description differs from earlier reporting that identified the replacement software as Zec.rocks. Gemini had previously said its new node software synchronized to the latest Zcash block in about six hours, compared with roughly one day for Zebra, and enabled faster restoration of backup nodes using stored recent network data. NU7 would require nodes to receive and validate blocks three times as frequently as under the current schedule.