Airat Rafailovich Ichmouratov (, Tatar Cyrillic: Айрат Рафаил улы Ишмурат, born 28 June 1973) is a Volga Tatar born Russian and Canadian composer, conductor and klezmer clarinetist. He is a founding
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 0xdf136b322bd9ab4dc97d871bc84fbc55a386f286594f656860a27eb84fb24359. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6127628f-49a5-4f1a-8dc0-f93ed0eed21d.json and https://artists.proofprofile.net/proofs/artist/6127628f-49a5-4f1a-8dc0-f93ed0eed21d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ichmouratov: Symphony "On the Ruins of an Ancient Fort", Maslenitsa Overture & Youth Overture
Ichmouratov: Piano Concerto, Viola Concerto No. 1
Piano Concerto, Op. 40: I. Andante affettuoso
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xf56b13d5548c12fc9c7e2a618b369d240fe8ace7e56389b6c550e5ae7256b2cb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2303001.
Piano Concerto, Op. 40: II. Grave Solenne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2441634d2cd83d3b64bcd5832297977bae4e3e77956cd72416628df2fe66fcef. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2303002.
Concerto No. 1 for Viola and Orchestra, Op. 7: III. Allegro - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a022bcc109fc2f96c2fe85838db5edc21076a0e0fcfdc9e112dd3bcb35c729. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2303006.
Ichmouratov: The Ninth Wave, Viola Concerto No. 2, Cello Concerto No. 1