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 0xa00bc86cae5be54bbf305097feb094dc5d07a5c62360647ba0fa3aa391579cad. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4702c906-3537-49bc-9852-d716031f3f74.json and https://artists.proofprofile.net/proofs/artist/4702c906-3537-49bc-9852-d716031f3f74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coletânea Coletivo Música Experimental, Vol. 1