right|thumb|Marie Louise, Duchess of Parma, second wife of Napoleon, wearing the Marie Louise Diadem Marie Louise or Marie-Louise is a French feminine compound given name. In other languages, it may
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x61a4753f89865fb196c90b079ed6a069a84c5a450c866bf00ed4a0e54c9365e8. 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/6465e977-acf0-40ae-a1a5-6078237e56e7.json and https://artists.proofprofile.net/proofs/artist/6465e977-acf0-40ae-a1a5-6078237e56e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).