Max Pommer (born 9 February 1936) is a German musicologist and conductor, a director of the Leipziger Universitätschor and the founder and conductor of the Neues Bachisches Collegium Musicum. Career
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 0x09fcf6d3cec8ee2599a1bae31bf18971f695bf3b214ede5031305512b89d4a65. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59eda4c2-6854-40b2-9e65-733dc4c808b7.json and https://artists.proofprofile.net/proofs/artist/59eda4c2-6854-40b2-9e65-733dc4c808b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bartholdy, Debussy, Brahms, Beethoven, Mozart, Tschaikowsky, Chopin, Prokofjew, Ravel, Albeniz: Natural Reflections
Hanns Eisler: Orchestral Music, Vol. 2 - Kleine Sinfonie / 5 Orchestral Pieces / Scherzo / Rhapsodie / Winterschlacht-Suite / Wilhelm Tell
EISLER, H.: Orchestral Music, Vol. 1 - Suite Nos. 1-4 / Kammersinfonie / Der lange Marsch (Pommer, Rogner)
Choral Music (Sacred) - Handel, G.F. / Mozart, W.A. / Haydn, F.J. / Beethoven, L. Van / Bach, J.S. / Mendelssohn, Felix / Bruckner, A.
Deutsche Messe, D. 872: Zum Eingang: Wohin soll ich mich wenden
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 0x021b9dd7baec1560b1458ab48d74bef023990ceb19c4d80f76e1bbb8128d7db0. 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/US2TL0932417.
Lobe den Herrn, meine Seele, BWV 143: Chorale: Du Friedefurst, Herr Jesu Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8282102480e8bef4d0345dc2ac8b090dedbcb6665af00402d6a6a5691ae2768. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB261201510.
Classic Moods - Pergolesi, G.B. / Bach, J.S. / Handel, G.F. / Bach, C.P.E. / Mozart, W.A. / Haydn, F.J. / Donizetti, G. / Mendelssohn, Felix
Oboe Concerto in D Minor, Op. 9, No. 2: II. Adagio (arr. for trumpet and organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18e9479a4b78d135b948f713ad6dd482cdc620cbfcf8b3661255d5298accfdd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USB8U1011367.
Wolfgang Amadeus Mozart: Klarinettenkonzert, Klavierkonzert No. 21, Eine kleine Nachtmusik (Best of Wolfgang Amadeus Mozart: Clarinet Concerto, Piano Concerto No. 21 & A Little Night Music)
Clarinet Concerto in A Major, K. 622: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd546929e466797583597dc2be7d5d2d9bf2981a78e0d82807e8d417a3ea7fc52. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DES380614001.
Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf4c0ca70c2e6df62be788700cedcd4634158f865a5c52330037bb4591d3ae2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DES380614002.
Piano Concerto No. 21 in C Major, K. 467: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db4f86aa8e79a5b5f793d339379258aef3e25e1b194baca5929b932fe2546a4. 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/DES380531204.
Piano Concerto No. 21 in C Major, K. 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281d3d5fa8a6c65cabbe9431a6a55b6e3d21f71490b44ed65da3246600bc4e6d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DES380531205.
Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7669e7a9c92f7669469467bdcd141944f0ddeef48c795c59c60386f23ae489e0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DES380613001.
Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": III. Menuetto - Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf67d5fd91c6321201c8ec7d11c2d6aeef763b628dc283b127c662a134fba071. 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/DES380613003.
Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romance - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68347e3e6fc74cbaa5ca7900b3200c1cc0ebb2551bc0b474e207f9ec22081faa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DES380613002.
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
Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": IV. Rondo - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac27e4b9be03b11c836fe77d18c07d1527f1a2d1031fb687f19d573e3afd465. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DES380613004.
Suite for Orchestra No. 2 in B Minor for Flute and Strings, BWV 1067: VII. Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af28226c31d2d6913c86990bfba2bf9fc3372efa23f1f63e34864b2a7ee72ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60425791.
Children's Corner, L. 113: III. Serenade for the Doll
Classical Music for Learning: Great Masterpieces to Improve Studying and Mental Focus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a97a3141ac20a17473de4ee1114daa9b301ed1545af57e761f60d7152c323de. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US5541301589.
Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb71acb363e2217eb8e0caeeaa7bf944f47161151f3aab96459995908daccac. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DELV41700544.
Brandenburg Concerto No. 6 in B-flat Major, BWV 1051: I. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe588abc9efb38f7a539a2fc8220f5cd9c7f68d4696961dd74c32abe3c2b36e24. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DELV41700969.
Brandenburg Concerto No. 3 in G Major, BWV 1048: I. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935e52f6b12f43bd81d3430c65e9dd79fb1ad4fd20af86a738792345d762098b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DELV41700548.
Suite Bergamasque in D-Flat Major, L. 75. III. Claire de Lune "Moonlight"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab91f6dc8e03c8c89ff2350d200d4c8e29f3fce888ef265d531e6876b712db2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US5541301602.