Zcash’s November upgrade could freeze funds in legacy Sprout pool

60-second summary

Zcash’s upcoming November NU7 upgrade will disable version‑4 transactions, instantly rendering any ZEC held in the legacy Sprout shielded pool unspendable. The change targets outdated cryptographic constructions, forcing users to migrate funds to newer Sapling or Orchard pools before the fork. Failure to act could lock assets, prompting a market‑wide push for wallet updates and potentially reducing Sprout‑related trading volume.