Elan David Sicroff () is a concert pianist, recording artist, and educator. He interprets the music composed by Thomas de Hartmann (1885–1956) and the spiritualist George Gurdjieff (1866 or 1867–1949)
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 0xe4be75cddaaab788c675a195d35ae347b29ae11231719cec5a8479f6f66d9ce4. 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/618f366e-8756-497f-840e-b7c61d0fe266.json and https://artists.proofprofile.net/proofs/artist/618f366e-8756-497f-840e-b7c61d0fe266.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Laudamus... The music of Georges Ivanovitch Gurdjieff and Thomas de Hartmann
Journey to Inaccessible Places and Other Music Composed in Collaboration by G.I. Gurdjieff and Thomas de Hartmann