Tamari may refer to: A type of soy sauce, produced mainly in the Chūbu region of Japan Tamari lattice, a mathematical lattice theory named after mathematician Dov Tamari Tamari Bar, restaurant in
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 0x72b7c869c734456276e45c8e1e334b3149c3787f8e36fdd5c12454e0b9f4d72c. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f07ddaa6-cc79-4361-ba05-42f6d9163a81.json and https://artists.proofprofile.net/proofs/artist/f07ddaa6-cc79-4361-ba05-42f6d9163a81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).