{"copyright_id":"0xdf552cc4665663305decf4eebeefdef8902845a04e08fa1eccfff0831c1808ed","name":"Sleet Shirley with Whatever I Want","registered_at":"2026-06-20T08:08:23Z","symbol":"NIM1561955","token_address":"0xdddb9854de0991c8e6b7f3ae43827e8f01d23b4d","type":"artist","uuid":"a7e7f80b-1eb1-4594-8264-dc608c04ff9d"}
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 0xdf552cc4665663305decf4eebeefdef8902845a04e08fa1eccfff0831c1808ed. 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/a7e7f80b-1eb1-4594-8264-dc608c04ff9d.json and https://artists.proofprofile.net/proofs/artist/a7e7f80b-1eb1-4594-8264-dc608c04ff9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).