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 0xbc2f225d50462d5eb1f802538bbe74f7c3ee1e6aff9354ecf6926cdf1eb16001. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6d2e184-2f65-4557-b7bc-1dec1cb74e4a.json and https://artists.proofprofile.net/proofs/artist/e6d2e184-2f65-4557-b7bc-1dec1cb74e4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Will Not Take These Things For Granted