thumb|350px|Ostinato from Radiohead's "Creep" features modal mixture, common tones between adjacent triads (B between G & B, C and G between C+ & C−), and an emphasis on subdominant harmony (IV = C in
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 0x33cd05441dee2076e9d894166b610a98282e5229d7b1558f8f8eb793df812c34. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca8c4a5a-9358-4e04-b2b9-cddbb14a3fbd.json and https://artists.proofprofile.net/proofs/artist/ca8c4a5a-9358-4e04-b2b9-cddbb14a3fbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).