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 0x98459ee1477bb7e2543796854bd37f9eb41dcf0f6db9eb075c0f8653a5463033. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b791dda-80b3-4b8a-adc8-f4e4281aad5c.json and https://artists.proofprofile.net/proofs/artist/8b791dda-80b3-4b8a-adc8-f4e4281aad5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).