thumb|Head office of Kazé/Crunchyroll France Kazé was a French publishing company that specializes in anime and manga. Its head office was in the 9th arrondissement of Paris."Mentions Légales ." Kazé.
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 0x09a332150adb1cdb20cfebc897ecfb1c7c40af55eb9780ff4cf43329f03a5b17. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9579a9da-bd13-42be-8a29-7251152bf3a8.json and https://artists.proofprofile.net/proofs/artist/9579a9da-bd13-42be-8a29-7251152bf3a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).