{"copyright_id":"0xc85fab95035bbb3eefd2c8af1ea0b456ab6e0d4276ad0762b4ddad7fef50ec31","name":"Fantasy League","registered_at":"2026-06-15T17:03:06Z","symbol":"NIM0773908","token_address":"0x6d6c2a356ea70e3e3cfbcedaafe8d35576941cdf","type":"artist","uuid":"0a79108a-a7a7-4b28-a27d-57d3d6dc63cb"}
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 0xc85fab95035bbb3eefd2c8af1ea0b456ab6e0d4276ad0762b4ddad7fef50ec31. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a79108a-a7a7-4b28-a27d-57d3d6dc63cb.json and https://artists.proofprofile.net/proofs/artist/0a79108a-a7a7-4b28-a27d-57d3d6dc63cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).