Zcash Seals $1.7B Shielded Pool as Ironwood Upgrade Activates

A recent network upgrade has retired Orchard, a shielded transaction pool, after developers disclosed a counterfeiting vulnerability that went undetected for four years. To preserve supply integrity, all remaining funds in Orchard must now exit through a controlled mechanism that limits withdrawals to amounts backed by verifiably deposited funds.

Orchard Decommissioned After Counterfeiting Risk

Orchard, used for privacy-preserving transactions, is being phased out as a precautionary measure. The move follows the discovery of a flaw that could have enabled the creation of unauthorized coins. Although the issue remained unnoticed for years, the upgrade prioritizes preventing any risk of inflation stemming from the vulnerability.

Controlled Exit to Enforce Supply Integrity

Under the upgrade, every coin within Orchard must leave through an exit gate that enforces value conservation. The mechanism caps total withdrawals to the sum of deposits that can be independently verified, closing off any avenue for counterfeit balances to be redeemed.

What Users Should Know

  • Funds still in Orchard must be withdrawn via the new exit mechanism.
  • The cap on withdrawals aligns with proven deposits to prevent unauthorized coin creation.
  • The deprecation is designed to maintain the network’s monetary integrity while users migrate funds out of the retired pool.
×