Orquesta Sinfónica Nacional de la Radio Polaca de Katowice
{"copyright_id":"0x1db9024b5d8a9d93307e10c0bb7c56f7f490c444ac2532a5779aace74d2b0ed7","name":"Orquesta Sinfónica Nacional de la Radio Polaca de Katowice","registered_at":"2026-06-20T20:21:42Z","symbol":"NIM1704638","token_address":"0xf6fc7b4bc141a7cb8adef69057fb8525ad8c3825","type":"artist","uuid":"c37c8e44-6bd8-4e86-b4db-05ed824e77ff"}
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 0x1db9024b5d8a9d93307e10c0bb7c56f7f490c444ac2532a5779aace74d2b0ed7. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c37c8e44-6bd8-4e86-b4db-05ed824e77ff.json and https://artists.proofprofile.net/proofs/artist/c37c8e44-6bd8-4e86-b4db-05ed824e77ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).