The Dogo Argentino (plural Dogos Argentinos) is an Argentine breed of large dog of mastiff type. It was bred in the early twentieth century in Córdoba in central Argentina, primarily for hunting large
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 0x4978609749e8042858bfb043ad3013a69573207bec6333017a321536668336f1. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4c0faca-b8e5-410b-bf55-dc2d61da854e.json and https://artists.proofprofile.net/proofs/artist/d4c0faca-b8e5-410b-bf55-dc2d61da854e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).