{"copyright_id":"0x47e2badc94a070ab0b4b70b994cbd5736621de9fa6bb3926ce957e36fed128a7","name":"Sigurd Vespestad Marthinussen","registered_at":"2026-06-20T06:23:50Z","symbol":"NIM1538447","token_address":"0xb1f4aea29f6dbcbb58452f194da7ec4cc23be0af","type":"artist","uuid":"a1ebba22-731b-4e5d-ab0a-b11ada3494f8"}
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 0x47e2badc94a070ab0b4b70b994cbd5736621de9fa6bb3926ce957e36fed128a7. 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/a1ebba22-731b-4e5d-ab0a-b11ada3494f8.json and https://artists.proofprofile.net/proofs/artist/a1ebba22-731b-4e5d-ab0a-b11ada3494f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).