Sulkhan Tevdores dze Tsintsadze (; ; August 23, 1925 – September 15, 1991) was a Georgian composer known for his chamber music and his film scores. Early life and education Tsintsadze was born in Go
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 0x8a9a3e2040d4e8d6ce686bb9c6ae49526decbfe74f61be48d7b219207fc97a10. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b7a5f24-bc3e-4a8c-8ee7-3a6d5f6b1cd0.json and https://artists.proofprofile.net/proofs/artist/0b7a5f24-bc3e-4a8c-8ee7-3a6d5f6b1cd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nasidze / Tsintsadze (String Quartet No. 5 / String Quartet No. 6)
Sulkhan Tsintsadze: Folk Themes for Cello and Piano. Nana