{"copyright_id":"0x9edcec8ba3bf7303310e5d5b70fb14311a3ceeadcbbee3109cf08aa04aaab33d","name":"Joensuun ortodoksinen mieskuoro","registered_at":"2026-06-20T06:45:27Z","symbol":"NIM1543796","token_address":"0x109e283b63ceca0d4a104808f2cc4a733b9c0f97","type":"artist","uuid":"a384534f-da95-43f3-9902-78e4eea9bb43"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edcec8ba3bf7303310e5d5b70fb14311a3ceeadcbbee3109cf08aa04aaab33d. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a384534f-da95-43f3-9902-78e4eea9bb43.json and https://artists.proofprofile.net/proofs/artist/a384534f-da95-43f3-9902-78e4eea9bb43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).