The red fox (Vulpes vulpes) is the largest of the true foxes and one of the most widely distributed members of the order Carnivora. It is present across the entire Northern Hemisphere, including most
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4fd53b864942a1bfb6aa3604e919b992a67943c6ba766f9bc32c0db7eeda83. Chain 2 (Bitcoin): anchored in block 953961 (2026-06-16T14:58:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27d77043-ae1c-4f3d-acc9-6e15c38bb018.json and https://artists.proofprofile.net/proofs/artist/27d77043-ae1c-4f3d-acc9-6e15c38bb018.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).