Ali Tajvidi (; November 7, 1919 – March 15, 2006) was an Iranian musician, composer, violinist, songwriter, and music professor at the School of National Music and Tehran University. He composed more
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 0xd8d0cee364c27b1da7050ab033e82a71c521a89a202c1c8023a8ccdb6c5fd7ae. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5e80cf7-7283-4e07-b0f5-e704021ae18f.json and https://artists.proofprofile.net/proofs/artist/a5e80cf7-7283-4e07-b0f5-e704021ae18f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Yadgar -e- Ostad ( Reminiscence of Maestro) : Setar & Violin By Ali Tajvidi
Maestro Ali Tajvidi : Collection Works Pt I & III