thumb|Luiza Borac, 2007 Luiza Borac is a Romanian classical pianist. Life thumb| In 2012, Borac recorded several world premiere recordings with Jaime Martin and the Academy of St Martin in the Fi
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 0x93c1b644ce7adb18200bba380cfc6e3fd254cb4df8f8685ff9932cddeeb23432. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0823089-23a6-46b8-8dd9-4dc04e291152.json and https://artists.proofprofile.net/proofs/artist/b0823089-23a6-46b8-8dd9-4dc04e291152.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grieg & Enescu: The Piano Concertos & Solo Works (Live)
Enescu: Violin Concerto & Fantaisie for Piano & Orchestra
Constantin Silvestri: Complete Piano Works
Suite No. 1, Op. 3 No. 1 "Children Playing": II. Pastorale
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 0x7130b5aeb60c477a1c59a60ce6f8764837cceb8f2f57064c079401f60000caf6. 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/DEAD62002802.
Dances populaires roumaines de Transylvanie, Op. 4: No. 4, Mărunțelul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d6fe60ab51a4ec2d35434451015cd69761c1e65989354058952d0cd3c50019. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEAD62002828.
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
Enescu: The Two Piano Sonatas • Nocturne • Prelude and Fugue • Pièce sur le nom de Fauré • Scherzo
Schumann: Kinderszenen • Etudes Symphoniques
Rarities of Piano Music at the "Schloss vor Husum" from the 2014 Festival