Zcash activated its Ironwood upgrade, introducing a new shielded pool that strengthens transaction security and makes the integrity of the ZEC supply independently verifiable.

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.