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Crypto
Zcash seeks to cut block time to 25 seconds, rolls out NU7 testnet
Zcash has applied its next upgrade, NU7, to its testnet. The upgrade aims to cut block creation time on the mainnet to 25 seconds from 75 seconds while reducing per-block issuance to keep total daily issuance unchanged. Zcash is targeting around Nov. 5 for mainnet deployment and plans to decide on final implementation after reflecting testnet results on Oct. 20. NU7 also changes fee handling and drops support for older transaction formats and the Sprout pool.
Crypto
Zcash activates Ironwood mainnet upgrade, halts new inflows to Orchard
Zcash has activated the Ironwood upgrade on its mainnet and halted new inflows into the existing private pool, Orchard. Zcash Open Development Lab said the upgrade went live at block height 3,428,143. Orchard is shifting effectively to a withdrawals-focused state, with remaining funds required to pass through a “turnstile” structure to move to Ironwood. The upgrade also targets an Orchard vulnerability reported in late May, with no confirmed signs of exploitation.
Crypto
Zcash Ironwood upgrade may be delayed amid lack of infrastructure readiness
Zcash is considering delaying its Ironwood network upgrade scheduled for late July, amid concerns that exchanges, mining pools and wallet providers may not have enough time to prepare for the software transition. Shielded Labs\' Jason McGee said on the Zcash community forum that the Ironwood upgrade and the shift to the Z3 stack are happening at the same time. Participants must replace zcashd with a Z3 stack made up of Zebra, Zaino and Zallet.