[Gemini Replaces Zcash Software in Preparation for NU7 Upgrade with 25-Second Block Time] Odaily Planet Daily News: Cryptocurrency exchange platform Gemini has replaced its Zcash system software from Zebra to Zakura, reducing the time required for nodes to catch up with the network state from nearly a day to slightly over 6 hours. This replacement was carried out ahead of the planned NU7 upgrade for Zcash. The upgrade aims to reduce block time from 75 seconds to 25 seconds, requiring network computers to process transactions at three times the previous frequency. Developers are targeting November 5 for the mainnet upgrade, but Gemini has yet to release performance test results for Zakura under the faster block frequency. (CoinDesk)