Márta Gulyás (born 1953 in Gyula, Hungary) is a classical pianist and a professor of piano and chamber music. Biography Márta Gulyás studied piano at the Liszt Ferenc University for Music in Budapest
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 0x353e20b680b64e2a3c5f39133b4d680a2bd68fc0ef5dcb9a0a923057d9596772. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5213c45-cdda-4d8d-9e34-96609cbceb7d.json and https://artists.proofprofile.net/proofs/artist/f5213c45-cdda-4d8d-9e34-96609cbceb7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Enescu: Sonatas for Violin and Piano, Opp. 2, 6, and 25
Triakontameron: No. 11. Alt-Wien (arr. for violin and piano)
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 0x9088b9fa2a7ff7a3fcd8db00cfb13b53023e9f7fd4e1d3666b8cb1beb361ec79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HUA253167808.
English Suite No. 3 in G Minor, BWV 808: IV. Sarabande (arr. for violin and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf82f8338337ecb1fd3013789fe88e99bf0459e54566855f14f1ec5255c9d15d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA253167801.
Porgy and Bess (arr. J. Heifetz): Act 1: Summertime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe210f557c9314b95bbe0a6447f0ba5de2527fa29a0b04b7ef8e3a59210109977. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HUA253167818.