Alexander Gavrylyuk (born 19 August 1984) is a Ukrainian-born Australian pianist. Career Gavrylyuk's first concert performance was at the age of nine. He moved to Australia at the age of 13. In 19
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 0x4fce41ef3c8b3c8b9b466d89dd635e4d8ea0966f4bfa167964850ce0a78ac20c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce0088b0-648a-433e-9768-d9d1e73d19ab.json and https://artists.proofprofile.net/proofs/artist/ce0088b0-648a-433e-9768-d9d1e73d19ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rachmaninoff: Moments Musicaux, Vocalise - Scriabin: Sonata No. 5 - Prokofiev: Sonata No. 7
Alexander Gavrylyuk Plays Rachmaninoff, Scriabin, Prokofiev
Mussorgsky: Pictures at an Exhibition - Schumann: Kinderszenen