BiFi is a brand of meat snacks owned by the American snack company Jack Link's. BiFi Roll (introduced in 1987) and BiFi Carazza (introduced in 1994) are the most popular BiFi products besides BiFi Ori
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 0x9dc113e3de4cc59a6e7c708d02f68534faa80b94fd252db323c82775341c3499. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d3b3379-9678-433c-bb4b-98479b0b7217.json and https://artists.proofprofile.net/proofs/artist/1d3b3379-9678-433c-bb4b-98479b0b7217.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).