Roughly 5% of the funds in the retired Orchard pool have gone through the turnstile. The rest sit in a pool that can no longer take deposits.

The upgrade retires Orchard, where a counterfeiting bug sat undetected for four years. Every coin inside now has to leave through a gate that caps withdrawals at verified deposits.

The long-awaited network upgrade retires the vulnerable Orchard shielded pool and introduces new safeguards to protect the Zcash supply.