Zcash shutters Orchard shielded pool to new inflows as Ironwood migration begins
AI Market Summary
Zcash activated the Ironwood upgrade, sealing the Orchard shielded pool to new deposits and forcing exits via a capped "turnstile" tied to verifiable deposits. Early migration data shows ~3% of funds moved on day one. The change mitigates a recently disclosed Orchard proof-circuit soundness bug that could have enabled undetectable counterfeit issuance, strengthening protocol integrity while creating near-term operational friction for shielded liquidity.
Impact level
● Medium
Affected assets
ZEC/USDT-2.87%
AI Insight · ZEC/USDTAI Insight
● Neutral
Trade now
⚠️ AI-generated insights are based on news content and are provided for informational purposes only. They do not constitute investment advice or represent the views of BingX. Investing involves risk. Please trade responsibly.
Zcash on Tuesday activated Ironwood at block 3,428,143, sealing its main shielded pool, Orchard, to new deposits and internal transfers. Funds already in Orchard must be withdrawn by their owners through a "turnstile" mechanism that limits withdrawals to amounts that can be proven as deposited.
Node output published hours after the activation showed Ironwood holding 104,035 ZEC, compared with about 3.56 million ZEC still in Orchard, implying nearly 3% migrated on the first day.
The upgrade follows the discovery in late May of a soundness flaw in Orchard's proof circuit. The bug could have allowed counterfeit zcash:native to be minted without leaving an on-chain trace.
