Zcash NU7 Upgrade Activates, Leaves 12,224 ZEC Stuck in Sprout

Zcash activated its NU7 network upgrade on Friday, triggering a technical change that affects how older shielded funds can be spent. At the time of activation, Zcash ’s legacy Sprout shielded pool became effectively unreachable for holders, with ZEC locked there estimated at roughly $15 million. The NU7 rollout took effect at block 3,543,405 at 02:34 UTC, according to blockchain tracking data from ZecStats . ZecStats lists the Sprout pool balance at about 12,224 ZEC , which now cannot be spent under the new rules.