Submitted custody chain — blast → ROM → mill → concentrate
Lot RM-2291 · hash-chained material genealogy per Standard Engines §45X custody schema. Grade evidence sealed; recovery offered as a range proof.
Received & validated against §45X custody schema
Chain complete · hop signatures verified · routed to FEOC verification queue.
Requested proof — recovery within FEOC-clean band
Prove recovery ∈ [88%, 94%] without revealing the reagent recipe, per §45X eligibility.
Provided ZK range proof — recovery within band
zk-SNARK proof of computation attached: recovery ∈ band on lot RM-2291. Recipe & block grades never leave Ridgeline.
An internal Meridian action occurred here. Outside your entitlement scope — you see that it happened, not its content.
Proposed attestation — FEOC-CLEAN
Custody chain intact and recovery proof valid per §45X §IV. Propose to issue the chain-of-custody attestation. Gate open for both sides.