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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae02be3ff0fedfebf45183cd8972a72ae964bfd4689f160867ea311362689ee0. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f043c9a0-ec03-4817-af31-cdf46592dfc3.json and https://artists.proofprofile.net/proofs/artist/f043c9a0-ec03-4817-af31-cdf46592dfc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Footworxx 16 Years (Festival Compilation)
The Underground Festival Compilation, Vol. 4