1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f27d8fe4872b482befac02c5b073f67d27a7f5d16e3ce455d51f554810e05a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b3432c9-b50e-4bb6-8988-5f2a30f0c92d.json and https://artists.proofprofile.net/proofs/artist/1b3432c9-b50e-4bb6-8988-5f2a30f0c92d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Radijski Festival 2004 Prvi Radijski Festival Srbije i Crne Gore