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 0xe4f56bbd8027f8a0a1c6e4d672fd258c7bc111ed4a14aad3ddf78b752708af10. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23001dac-0b3e-47ea-bbd3-694bce130886.json and https://artists.proofprofile.net/proofs/artist/23001dac-0b3e-47ea-bbd3-694bce130886.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Twinkle Toad - Brassic's Toad Vivisection
Relative Entropy - Shadow Conspiracy Remix