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 0x97fe8631a9f32a1d72ddb5d8fa8efc63b8688a1a1be74cdc48c65311433cd7e3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64c13cc2-e4c8-47e0-adbf-6110be77c5d3.json and https://artists.proofprofile.net/proofs/artist/64c13cc2-e4c8-47e0-adbf-6110be77c5d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).