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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad8fa9c4d02801fba7a8942bd488f292f4bc2ffcfe2bdeec2ace39fce40a26c. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c00b90c3-1365-4e3f-b0ce-23c32afe518c.json and https://artists.proofprofile.net/proofs/artist/c00b90c3-1365-4e3f-b0ce-23c32afe518c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).