{"copyright_id":"0x7134edbdd5d2cd04c7fa0ee78d089601dc4de8c4fbd99dab8da71a162dda5cb5","name":"Hellen Sparingga","registered_at":"2026-06-16T21:15:06Z","symbol":"NIM1177740","token_address":"0xd82b6595e563cddb3600c75ccef6ecaac4bab525","type":"artist","uuid":"5aecd5f4-bf02-49af-8e83-ab907aa3f38e"}
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 0x7134edbdd5d2cd04c7fa0ee78d089601dc4de8c4fbd99dab8da71a162dda5cb5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aecd5f4-bf02-49af-8e83-ab907aa3f38e.json and https://artists.proofprofile.net/proofs/artist/5aecd5f4-bf02-49af-8e83-ab907aa3f38e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).