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 0xf1417aa092bb24798d3dbec644985cd03ddb6328cd09716f934fad010d07b77f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37a75ea3-a08f-41c1-885e-87661d49d106.json and https://artists.proofprofile.net/proofs/artist/37a75ea3-a08f-41c1-885e-87661d49d106.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live from Transylvania at Sighisoara Blues Festival