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 0x89ad0591db24244b1ef953e5281c5c6794586129bdd79d809481bcc1b15aa458. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b66df2a-a932-496f-b4df-9c969e5f5e05.json and https://artists.proofprofile.net/proofs/artist/8b66df2a-a932-496f-b4df-9c969e5f5e05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alentejo e Omei Povo (Alentejo and Its People)
Um Fado para uma-noite (A Fado for One Night)
O Fado e do povo (Fado belongs to the People)
Linda Portuguesa (Beautiful Portuguese Woman)
O lavrador e a terra (The Farmer and the Soil)
A lenda da fonte (The Legend of the Well)
Olhos de mil cores (Eyes with a Thousand Different Colours)