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 0xfc3e9674b6f85da94cdb575b649c0512f4e683eab14eb443b0462d2cf39a5587. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74a1a73a-8639-4748-9834-41c4a37e77cc.json and https://artists.proofprofile.net/proofs/artist/74a1a73a-8639-4748-9834-41c4a37e77cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Greek Folk Instruments Vol.5 : Violin
Greatest Greek Musicians: 5 Magic Tracks (Greek Traditional Violin)
Cretan Shores of the Libyan Sea (Sto Livyko)
The Greek East: Music from the Eastern Aegean Islands and Asia Minor