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 0x61c969d3b5ddc0c6d601e5520c1e3ff33e1b9217b35adf5d448bd6eb6190a865. 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/fd4988f2-4200-478d-b74d-8912353b34df.json and https://artists.proofprofile.net/proofs/artist/fd4988f2-4200-478d-b74d-8912353b34df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
gadja - Takuro Okada Remix with akatsuka
gadja - Takuro Okada Remix without akatsuka