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 0xc0bbdc8c9658e7a9af907fdccbc0925bccbd7105a162777c8fd9290fb23a133c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/476e0dc7-76d5-4e9e-8e5a-20724936e887.json and https://artists.proofprofile.net/proofs/artist/476e0dc7-76d5-4e9e-8e5a-20724936e887.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).