Zcash Developers Recommend Upgrading Nodes to Ironwood Fork
The Zcash Foundation has released Zebra 6.0.0 and recommends all node operators upgrade to the Ironwood fork. This update introduces a new shielded pool and version 6 transaction format. The change was prompted by a vulnerability discovered in the old Orchard pool that could have allowed an attacker to create counterfeit $ZEC undetected. Developers patched the vulnerability in June, finding no evidence of exploitation, though Zcash's privacy architecture prevents absolute certainty.
Ironwood utilizes the Orchard action structure and Halo2 proof system. It adds a separate note commitment tree, a nullifier set, a network value pool, and network history data. After activation, nodes can track the new pool independently from Orchard. Zebra also updates node commands for operators to verify pool and commitment tree states. This upgrade is critical, as older software will not follow the correct chain post-activation.
Ironwood's key protection mechanism is a "turnstile" between the Orchard and new pools. Once activated, Orchard will stop accepting new outputs and internal transfers. Funds can be withdrawn, but an accounting rule prevents withdrawing more $ZEC from Orchard than was legitimately deposited. This design allows public auditing of the circulating supply without revealing private balances or transaction details, with any excess capital becoming locked inside Orchard. Zcash had scheduled this hardfork for July 28 after developers confirmed the patched bug raised inflation concerns.
cryptonews.ru2 giorni fa 16:36
