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 0x8d46c7f3edec48f558af8e73c469b1e43bae5d29747e15505354c4a1b69bca39. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff7ef091-bee1-41a1-88f2-4bc8a81c7201.json and https://artists.proofprofile.net/proofs/artist/ff7ef091-bee1-41a1-88f2-4bc8a81c7201.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lords of the Living, Masters of the Dead