1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xd6aa7eb5bd517d1c695e89b7b870ad916907e71a91145e3f0b911c5b609c54be. Chain 2 (Bitcoin): anchored in block 953938 (2026-06-16T11:35:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20529dd1-f8fb-46ed-ab47-e793db93868a.json and https://artists.proofprofile.net/proofs/artist/20529dd1-f8fb-46ed-ab47-e793db93868a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cruima ce tragudia (Canti e musiche dalla calabria greca)
Cumunia Ellenofonos Calavria (Canti e musiche dalla Calabria greca)