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 0x9ebe44bf842217354e759731ed89034ee44db04bddd5a1f58d0b624ff83a4557. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be0ede71-b375-4019-9b7c-e9428670e8e5.json and https://artists.proofprofile.net/proofs/artist/be0ede71-b375-4019-9b7c-e9428670e8e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hearts of Iron IV - Battle for the Bosporus
Crusader Kings III: Fate of Iberia (Original Game Soundtrack)
Crusader Kings III: Legacy of Persia (Original Game Soundtrack)
Bella Ciao - Hearts of Iron IV (Music from the Original Game Soundtrack)
Bella Ciao - Hearts of Iron IV - Short Version
Europa Universalis V (Original Game Soundtrack)
Gloria Patri (On Bach's Cello Suite No.1 in G major, BWV 1007 I.Prélude)