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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2b822c2f5635dcc6dd883b215223ffbd54314bd27a3a434786c2439e91ca39. 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/21626e37-1838-4779-bcca-63f336b1e618.json and https://artists.proofprofile.net/proofs/artist/21626e37-1838-4779-bcca-63f336b1e618.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fit Mix: Workout & Fitness Tracks, Vol. 1
2016 Ultimate Running Tracks & Workout Favorites