Arrangement by Benoît Malmberg & Niklas Atterhall
{"copyright_id":"0x58c0e22a59ebc96a52b8ce1ecc77f3db64257ca9809de3bc92aed74fd39ed7f9","name":"Arrangement by Benoît Malmberg & Niklas Atterhall","registered_at":"2026-06-16T04:16:33Z","symbol":"NIM0934644","token_address":"0x50fa15f01c18e871cb62ef24db61aec458dfd857","type":"artist","uuid":"2a55ec0d-59b4-45bc-bdbe-51dd5f19aef5"}
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 0x58c0e22a59ebc96a52b8ce1ecc77f3db64257ca9809de3bc92aed74fd39ed7f9. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a55ec0d-59b4-45bc-bdbe-51dd5f19aef5.json and https://artists.proofprofile.net/proofs/artist/2a55ec0d-59b4-45bc-bdbe-51dd5f19aef5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).