{"copyright_id":"0xcfee50b837f9e890cef5ff12dedb1f9101ec3fa4a2f33f1b054cfed5e6ec043f","name":"Folklorni Ansambl Ivan Goran Kovačić","registered_at":"2026-06-16T21:38:51Z","symbol":"NIM1183389","token_address":"0xbc39ddc17d1091d8d177462f1f783a4639fde52c","type":"artist","uuid":"5bfdc7dd-e984-4648-8e6d-aaad0a0df68d"}
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 0xcfee50b837f9e890cef5ff12dedb1f9101ec3fa4a2f33f1b054cfed5e6ec043f. 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/5bfdc7dd-e984-4648-8e6d-aaad0a0df68d.json and https://artists.proofprofile.net/proofs/artist/5bfdc7dd-e984-4648-8e6d-aaad0a0df68d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
60 Godina Folklornog Ansambla Ivan Goran Kovačić 1948-2008