Tsani, or Tsan (Asomtavruli: ; Nuskhuri: ; Mkhedruli: ც; Mtavruli: Ც; ) is the 30th letter of the three Georgian scripts.Machavariani, p. 136 In the system of Georgian numerals, it has a value of 200
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 0x0675ac23f4e5cc220c5d7c552128e28cbba2d1d10436aca1cebff47f4fc29f38. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4b29c07-0011-40a4-8732-021215f6afa4.json and https://artists.proofprofile.net/proofs/artist/e4b29c07-0011-40a4-8732-021215f6afa4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).