EL7.AI
Crypto•5 November 2026•
1 min read

Zcash NU7 Upgrade to Freeze $16 Million in Legacy Sprout Pool

Key Facts

1Approximately 12,200 ZEC worth $16 million remains in the legacy Sprout pool and will be frozen following the NU7 upgrade.
2Roughly 10,000 coins exited the pool over the past week, but only about 40 moved out on Wednesday.
3Remaining balances in the Sprout pool will become unusable after block height 3,543,405.

Zcash is proceeding with its NU7 network upgrade which will permanently freeze approximately 12,200 ZEC tokens, valued at $16 million, remaining in the legacy Sprout pool. Crypto Briefing reported that these balances will become unusable once the blockchain reaches block height 3,543,405, as the upgrade disables the transaction types required to access the original 2016 privacy pool.

Roughly 10,000 coins exited the pool over the past week as holders migrated funds, though the outflow slowed significantly on Wednesday, November 4, 2026. While the frozen ZEC will remain part of the total supply, it will be effectively removed from circulation; however, newer privacy pools including Sapling and Orchard will continue to function normally following the NU7 activation.

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