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 0xdbddd950ec4cdaebde6f24a75b8f208285560df1ac9e31331f4bbccdf612693b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52399bf-1a58-41c9-a772-ac442efac8ef.json and https://artists.proofprofile.net/proofs/artist/c52399bf-1a58-41c9-a772-ac442efac8ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grand Otel - Live From Athens, Greece / 2003
Ta Xilina Spathia (Songs from the 1st Album)