1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd542d0789b5751134747e610e2913fb8c5ecdd74578a0b58ab57e7bb60129036. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1acd64ff-b57d-4ea0-ac1a-d2e85e5e8269.json and https://artists.proofprofile.net/proofs/artist/1acd64ff-b57d-4ea0-ac1a-d2e85e5e8269.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).