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 0xcef7c3af26ce796b8428c8e48b3ef1e74091d20afd1a0ee67f347f7afa22f6a4. 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/2215d5b1-0f1b-46f6-a836-310c58480aeb.json and https://artists.proofprofile.net/proofs/artist/2215d5b1-0f1b-46f6-a836-310c58480aeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Odense - (Version 1) Live at Rytmeposten Odense, Denmark, 28 October 1993
Loppen - Live at Loppen Christiana, Denmark, 29 October 1993
Odense - (Version 2) Live at Rytmeposten Odense, Denmark, 28 October 1993
Dave Brock Presents... This Was Your Future