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 0x6d4a2978a672f72dbd2c3f6cdfe485088964c39d16b0e4f4ac8b0b0622eea078. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24bfc683-3ed8-4845-a4da-2b42b70e55b9.json and https://artists.proofprofile.net/proofs/artist/24bfc683-3ed8-4845-a4da-2b42b70e55b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bryan Smith & His Happy Piano - For Me And My Gal
Bryan Smith & His Happy Piano - Whistling Rufus
Bryan Smith & His New Hawaiians - Blue Islands
Bryan Smith & His Happy Piano - Music, Music, Music
Reggae and Ska Non-Stop Megamix Party (The Ska & Reggae All-Stars)