Alexei Fayzulkhakovich Sultanov (, ; August 7, 1969 – June 30, 2005) was an Uzbek and American (since 2004) classical pianist. Biography Alexei Sultanov was born to a family of musicians, his father
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 0x09d76acec9a5a2869b6ed0181e7c1f8e689022023120d4b8a57dbf55830e1b09. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae349b51-7dbc-4849-949a-eb72a4ca20c1.json and https://artists.proofprofile.net/proofs/artist/ae349b51-7dbc-4849-949a-eb72a4ca20c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rachmaninov, Prokofiev & Scriabin: Piano Sonatas
Alexei Sultanov at Tchaikovsky Competition, 1998 (Live)
12 Etudes, Op. 8: No. 12 in D-Sharp Minor
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef0cc539fc9c305870f0879805d1453f70e193541930e06392147be5a3f5d2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UK2Y21308756.