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 0x7f108c2ac0bc53a7163eed999c5cc2a6c2169fb489f9e8087e62091f45c62417. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8570e598-c37c-4bbb-9abe-a15391592ae5.json and https://artists.proofprofile.net/proofs/artist/8570e598-c37c-4bbb-9abe-a15391592ae5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beyond Cure feat. Cig & 雞腿 of Infernal Chaos & 666