Zcash activates Ironwood upgrade for quantum recovery readiness
- —Ironwood activated on July 28, 2026, at block 3,428,143
- —Ironwood notes use marker 0x03 instead of Orchard's 0x02
- —ZIP 2005 reserves 0x0A for PRF-expand, not quantum resistance
- —Sprout, Sapling and Orchard funds lack the same recovery protection
Why it matters: Zcash is laying groundwork to recover funds after quantum threats, but protection and migration of older pools remain incomplete.
Source: Blockonomi