Zcash NU7 upgrade goes live, leaves 12,224 ZEC stranded in Sprout pool
Zcash’s NU7 upgrade has rendered about $15 million in legacy Sprout funds unspendable, although a future network upgrade could potentially restore access.
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What happened
Zcash’s NU7 upgrade has rendered about $15 million in legacy Sprout funds unspendable, although a future network upgrade could potentially restore access.
Reported details
- Zcash Upgrade: NU7 activated at block 3,543,405, making roughly 12,224 ZEC in the legacy Sprout shielded pool unspendable under the network’s new transaction rules. The affected holdings are valued at around $15 million. Sprout Pool: The upgrade rejects version 4 transactions through ZIP 2003.
Why this matters
The Zcash NU7 upgrade is a factual update rather than a structural change to tokenized assets. Its value to a desk is the sourced detail and the timing, so read it next to the linked reporting and treat any figure the sources do not state as unknown.
Evidence boundary
On the Zcash NU7 upgrade, the scope is limited to what the linked 2 reports state, and where they diverge both positions are recorded without either being picked in advance; the headline figure is what to check first.
What to verify
Corroborate the Zcash NU7 upgrade with one independent dated source, and treat any figure the linked reports do not state as unknown rather than inferred.
Sources and editorial check time
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Cointelegraph: https://cointelegraph.com/news/zcash-nu7-upgrade-15m-sprout-funds-unspendable
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Crypto Economy RWA: https://crypto-economy.com/zcash-nu7-activation-traps-12224-zec-worth-15m/
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Editorial source check time: 2026-11-06T12:18:32.321Z
This information is educational and is not financial, legal, or tax advice.