Zcash is about to upgrade: who needs to check their old wallets?
Update 5/11/2026: NU7 is scheduled to activate at block 3,543,405. The new block height is what matters; the exact time depends on mining speed.
The key thing to watch is Sprout, Zcash’s original privacy-focused transaction pool. After activation, version 4 transactions will be rejected. This is the only format that can spend ZEC in Sprout, so any remaining balance there will no longer be transferable under the new rules.
ZIP 2003 does not consider this ZEC burned and leaves open the possibility of restoring spending rights through a future upgrade. But there is no guarantee that will happen.
Don’t take this to mean that all ZEC will be locked: this balance warning applies to Sprout. Still, removing v4 transactions also affects software that creates the old format, including transactions outside Sprout.
NU7 also lowers the target block time from 75 to 25 seconds. The reward per block will be adjusted so that daily issuance does not increase; the supply cap remains 21 million ZEC.
For node operators, the Zcash Foundation recommends upgrading before activation. For anyone with a long-standing wallet, I’d prioritize checking the pool type and the software’s support through official documentation, and avoid following instructions from unfamiliar support messages.
My take: faster upgrades only matter if users and infrastructure can keep up. This is a story about compatibility and asset management before it’s a story about price.
Do you make a habit of checking whether the wallet you use supports upgrades?
Sources: Zcash Foundation, Zebra 7.0.0 release dated 22/10/2026; ZIP 259 and ZIP 2003, checked on 5/11.
$ZEC
Update 5/11/2026: NU7 is scheduled to activate at block 3,543,405. The new block height is what matters; the exact time depends on mining speed.
The key thing to watch is Sprout, Zcash’s original privacy-focused transaction pool. After activation, version 4 transactions will be rejected. This is the only format that can spend ZEC in Sprout, so any remaining balance there will no longer be transferable under the new rules.
ZIP 2003 does not consider this ZEC burned and leaves open the possibility of restoring spending rights through a future upgrade. But there is no guarantee that will happen.
Don’t take this to mean that all ZEC will be locked: this balance warning applies to Sprout. Still, removing v4 transactions also affects software that creates the old format, including transactions outside Sprout.
NU7 also lowers the target block time from 75 to 25 seconds. The reward per block will be adjusted so that daily issuance does not increase; the supply cap remains 21 million ZEC.
For node operators, the Zcash Foundation recommends upgrading before activation. For anyone with a long-standing wallet, I’d prioritize checking the pool type and the software’s support through official documentation, and avoid following instructions from unfamiliar support messages.
My take: faster upgrades only matter if users and infrastructure can keep up. This is a story about compatibility and asset management before it’s a story about price.
Do you make a habit of checking whether the wallet you use supports upgrades?
Sources: Zcash Foundation, Zebra 7.0.0 release dated 22/10/2026; ZIP 259 and ZIP 2003, checked on 5/11.
$ZEC
