SvmuuNews Zcash developers have finalized consensus rule changes for the upcoming Ironwood upgrade, targeting activation in July. This upgrade stems from a previous vulnerability in the Orchard pool that could have allowed an attacker to mint an unlimited amount of counterfeit ZEC. Due to the privacy features of the Orchard pool, the team could not determine whether any counterfeit ZEC was minted before the vulnerability was patched.
The Ironwood upgrade will introduce a new privacy pool using the Orchard protocol, while the old pool will be phased out. It will also add a control flag within the zero-knowledge proof circuit. When enabled, this flag will disable the ability to transfer funds to other users within the pool while retaining the change functionality. After the upgrade is activated, this flag will be enabled for the old Orchard pool, and user transfers to addresses in the old pool will be automatically redirected to the new pool.