The Philharmonia Hungarica was a symphony orchestra, based in Marl, Germany, which existed from 1956 to 2001. History The Philharmonia Hungarica was first established in Baden bei Wien near Vienna by
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 0xf7958d500f267722296313a7bc92374b982953166821fd4574d249e9157c93bf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d76f34e7-e4f5-4822-bd5a-c697b2dad591.json and https://artists.proofprofile.net/proofs/artist/d76f34e7-e4f5-4822-bd5a-c697b2dad591.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saint-Saëns: Violinkonzert No. 2, Op. 28
Brahms: Violin Concerto in D Major, Op. 77
Stauss Sohn: Walzer - Polkas - Märsche, Vol. 2
Los Grandes de la Musica Clasica - Igor Stravinski Vol. 3
Los Grandes de la Musica Clasica - Hector Berlioz Vol. 2
Rheinberger: Piano Concerto, Op. 94 - Moszkowski: Piano Concerto, Op. 59
Blue Edition - Mozart: Symphony No. 36 "Linz Symphony" & Piano Concerto No. 8 "Lützow"
Red Edition - Mozart: Piano Concerto No. 6 & Serenade No. 9 "Posthorn Serenade"
Blue Edition - Mozart: Piano Concerto No. 6 & Vesperae solennes de confessore, K. 339
Classical Selection - Rubinstein: Piano Concerto No. 4
Liszt: Hungarian Rhapsodies No.3 & No.4 - Dvořák: Slavonic Dances, Op.46 No. 1, 4 & 8
Respighi: Antiche danze et arie per liuto, Suite Nos. 1-3 (Remastered 2023)
Respighi: Ancient Dances and Airs for Lute by Antal Doráti (Remastered 2023, Studio 1958)
Red Edition - Mozart: Symphony No. 36 "Linz Symphony" & Nos. 45-46
Classical Masterpieces - Franz Schubert Symphonies Nos. 1 & 4
Schubert: Symphonie No. 8 "Die Unvollendete" - Symphonie No. 9
Green Edition - Schubert: Symphony No. 4 "Tragic" & Symphony No. 2, D. 125
Green Edition - Schubert: Symphony No. 2, D. 125 & Symphony No. 3 D. 200
Blue Edition - Schubert: Symphony No. 8, D. 759 & Symphony No. 3, D. 200
Blue Edition - Schubert: Symphony No. 5, D. 485 & Symphony No. 3, D. 200
Blue Edition - Schubert: Symphony No. 4 "Tragic" & Symphony No. 8 "Unfinished"
Blue Edition - Schubert: Symphonies Nos. 4 & 5
Red Edition - Schubert: Symphony No. 4 "Tragische", D. 417 & Piano Quintet, Op. 114 D. 667
Yellow Edition - Schubert: Symphony No. 4 "Tragic" & Symphony No. 8 "Unfinished"
Yellow Edition - Schubert: Symphony No. 4 "Tragic" & String Quartet No. 13 "Rosamunde"
Green Edition - Schubert: Symphonies Nos. 2 & 5
Green Edition - Schubert: Symphonies Nos. 2, 8 & Valses nobles Nos. 1 - 4, 9, 10 & 12
Orange Edition - Schubert: Symphony No. 4 "Tragische" & String Quartet No. 1, D. 18
Orange Edition - Schubert: Symphony No. 4, D. 417 & Symphony No. 3, D. 200
Orange Edition - Schubert: Symphony No. 2, D. 125 & String Quartet No. 13 "Rosamunde"
Orange Edition - Schubert: Symphony No. 2, D. 125 & Symphony No. 8, D. 759
Red Edition - Schubert: Symphony No. 4 "Tragische" & Symphony No. 1, D. 82
Red Edition - Schubert: Symphony No. 2, D. 125 & Symphony No. 4, D. 417
Classical Selection - Schubert: Symphonies Nos. 3 & 4 "Tragic"
Blue Edition - Schubert: Symphony No. 2, D. 125 & Piano Quintet, D. 667
Classical Selection - Schubert: Symphonies Nos. 1 & 2
Orpheus in der Unterwelt · Operette in 2 Akten (1988 Digital Remaster): Ouvertüre (Orchester)
Adolf Dallapozza/Gisela Litz/Grit van Jüten/Theo Lingen/Ferry Gruber /Kari Lövaas/Brigitte Lindner /Chor der Kölner Oper/Philharmonia Hungarica/Willy Mattes/Anneliese Rothenberger
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 0x60430d4b2b39f6c903bf8af3ff713c3973e14271678bb69ef2dd2c60de403beb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEC628700759.
Orpheus in der Unterwelt - 1. Akt (1988 Digital Remaster): Als ich noch Prinz war von Arkadien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a5640df5c634ce272a3e26ee09a64865abdc7c8842694f8df8647761b3af42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA341000344.
Prince Igor, Act II: Polovtsian Dances. No. 17, General Dance. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899ff20edbb22373fcd7f24baa34fd042c673c02ea5532d1424f25dceda10115. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USZGD1700581.
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
Piano Concerto in E Major, Op. 59: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6942e7abe2206706fc11be95cb31a2938f87e553ba51c4aad1775e5a4200477d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLY331603963.