1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9447b369f5c8e61d046d6d73adbef15fb8be995dcaee256f5dfb77f72c092ae. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12774016-e28e-4268-915f-4b00a6d5b454.json and https://artists.proofprofile.net/proofs/artist/12774016-e28e-4268-915f-4b00a6d5b454.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sometimes I Feel Like A Motherless Child/I'm Gonna Tell God All Of My Troubles (Medley/Live On The Ed Sullivan Show, April 24, 1960)