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 0x38fe8a18e039a6fb0b54b90b8880ff3bbebad749d5a1d229b06c7fe8cac36423. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c0df157-0ee2-4c83-83cd-7ff244a6b127.json and https://artists.proofprofile.net/proofs/artist/3c0df157-0ee2-4c83-83cd-7ff244a6b127.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
'Ofa Faivelenga (fa'u 'e Talia'uli Malohi)