Yulianna Andreevna Avdeeva (; born 3 July 1985) is a Russian concert classical pianist who has performed and recorded internationally. Life and career Avdeeva was born in Moscow. She started piano
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 0xca096e6015ea26ada25c30281bf662b6f985a8900fd4b5961eef5239565048db. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cb2a205-8f7b-472e-b960-44920e730205.json and https://artists.proofprofile.net/proofs/artist/4cb2a205-8f7b-472e-b960-44920e730205.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chopin: Sonata in B-Flat Minor, Scherzo in C-Sharp Minor, Mazurkas, Op. 30, Nocturne, Op. 27, Piano Concerto in E Minor, Op.11