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 0x505f8450498c0375fb69577925534a76dc3e33f52fe7983dfdd643bfc0b56aef. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b382d9a-1de2-45c8-9e80-67e6f29ca004.json and https://artists.proofprofile.net/proofs/artist/1b382d9a-1de2-45c8-9e80-67e6f29ca004.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kpm 1000 Series: Jingles and Programme Cues - Volume 3