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 0x0c42f52b44220613ca5c59017442004650f9680b4c8322d9a187720a113bef83. 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/459d3eb2-1b8c-4b89-9f9f-2153f996655b.json and https://artists.proofprofile.net/proofs/artist/459d3eb2-1b8c-4b89-9f9f-2153f996655b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Space Trip (Original Indie Game Soundtrack)
Soggy bread waddle (Delichess (Original Game Soundtrack)
November fog Duet for Mother32 and Minilogue