Rafael Frühbeck de Burgos (born Rafael Frühbeck; 15 September 1933 – 11 June 2014) was a Spanish conductor and composer. Frühbeck was born in Burgos, Spain to a family of German ancestry. He first to
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 0x8054353fafa5dfb5f1d764831b45bbf6e455b8a06ce2718139e3a1534004e85d. 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/00bbea1a-5204-453d-8c50-0e4d64692866.json and https://artists.proofprofile.net/proofs/artist/00bbea1a-5204-453d-8c50-0e4d64692866.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Elgar: Symphonies Nos 1-3, Enigma Variations, Cello Concerto, Marches
Symphony No. 1 in A-Flat Major, Op. 55: I. Andante. Nobilmente e semplice - Allegro - 2023 Remastered Version
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 0x7b4d7e5bf2430a17762efb464e3dd72891735ea9d3ba19ff597755b1a4c495c1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301701 — a six-check JSON result.
Symphony No. 2 in E-Flat Major, Op. 63: I. Allegro vivace e nobilmente - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a651da077925b80f1a28f955f8adbe36c7ff842a3be50d3731d38883d7c8fc6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301801 — a six-check JSON result.
Symphony No. 3 in C Minor, Op. 88 (posth.): I. Allegro molto maestoso (Sketches elaborated by Anthony Payne) - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6772c77a284a5bdd2d13d5c4eb76411d55696f3ca52993e8565f1e73a173e416. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301901 — a six-check JSON result.
Symphony No. 1 in A-Flat Major, Op. 55: II. Allegro molto - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016ecadc618f97bff4ba9351a0529de0eb9e6e666343e28b493b5a63669b4fb0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301702 — a six-check JSON result.
Symphony No. 2 in E-Flat Major, Op. 63: II. Larghetto - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30787668dc98daeefe4dcb25538881a45ce0dc792c949d57664f7084a8823f59. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301802 — a six-check JSON result.
Symphony No. 3 in C Minor, Op. 88 (posth.): II. Scherzo. Allegretto (Sketches elaborated by Anthony Payne) - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e1769e9209d0fb24e36a64c276a92cb6d949080210a4db16c2fe64d9edba3f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301902 — a six-check JSON result.
Variations on an Original Theme, Op. 36 "Enigma": Theme (Andante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5e2544c0bb656d493fa18fd04139d66573ebfa6d5b13f6e74cf211b9a962db. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2310901 — a six-check JSON result.
Symphony No. 1 in A-Flat Major, Op. 55: III. Adagio - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bd8a3ce956ddd83f7dee4d39ac8ba986ea6bdb91a53811852721a651f5fc52. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301703 — a six-check JSON result.
Symphony No. 3 in C Minor, Op. 88 (posth.): IV. Allegro (Sketches elaborated by Anthony Payne) - 2023 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991be7c8514a5527a3938649c1f22f406899359bcb7f0ae37922966e3b1b75e0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2301904 — a six-check JSON result.
Pomp and Circumstance Military Marches, Op. 39: III. March No. 3 in C Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3254fc800052ea5a1a8f84867c49bad62fb07af20b7e82ff03a4797ddd451508. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2312623 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1914dc6c28174357dfeac42f594ad3293e47d0b1a2eec1aa05788c42d093061. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2336601 — a six-check JSON result.
Pomp and Circumstance Military Marches, Op. 39: II. March No. 2 in A Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab39d18836d016c3a769239dc2e09cf57af828db917f14c39968b330fbd74fa1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2312622 — a six-check JSON result.
Cello Concerto in E Minor, Op. 85: I. Adagio - Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282ed11c6240a7de3fc4a1c54cbd7a776b4508f510e10afaf481e7ba97933384. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ2308401 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecb6aca4cdc2eeb54a2ea8e503654f79b777a074a03e1c613b2ca8687b4865. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801601 — a six-check JSON result.
Der Troubadour: Seht, wie die Wolken am Himmel ziehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94923add7824d2fc0ad0dbe344fdd35696642be3b1af9c61aaf0fd5afb4f1ad. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801628 — a six-check JSON result.
Carmen: Habt ihr gehört? / Leichter Rauch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217b3a0b58ca436bc82c9374d4994f94c919c8dfffc710bd2e7da94f41d30e6c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801613 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd96f3c989d17b51f083cecc99a360131014f7ba9563eb785d6de5cee3006158. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801612 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab358e62b2a63fb2bad72744761cc1a403755ad9d847adc0111d354d7a410a5b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801625 — a six-check JSON result.
Der Freischütz: Was gleicht wohl auf Erden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bd410439a11952912c1a2c12c243d0b6bb81047f500e0dd77928bd09c743bf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801624 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4654b4e9fc302e88e575339f7497abb96e6ae089b045af4c1590a6e180ada. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801606 — a six-check JSON result.
Der Fliegende Holländer: Steuermann, lass die Wacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46899b41fb57bbf988705303f9670e35a0f352b6c2df6227372b01e575278616. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801618 — a six-check JSON result.
Tannhäuser: Beglückt darf nun dich, o Heimat, ich schauen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e757e6dc42b1d57d43d9c61e869514c30c0ab7196b6e19f4a3e27e89791b7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801610 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696bb057e84f9e7a396be30146c37f634b708da345f68b4a8768ff08cccf071. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801607 — a six-check JSON result.
Die Lombarden: O Signore, dal tetto natio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9557fbf4dd2e6fda230bae21392c8c3f5e4240cdb50afde7a01579be5a40b2e9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801615 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c9cb0d625b15e3f688ac64c162bee94852c335c6068e48edf14e21f45d7a3b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801603 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ccae6e4406fd7e56e9a7e527257d443189ec6a7d56890e1bf52a351ef2fa31. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801611 — a six-check JSON result.
Cavalleria Rusticana: Gli aranci olezzano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80b7805c5a4c2797f0bc971a0e8eb444bea2a1d3f96cee07a830c9f8ad81b7a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA769801617 — a six-check JSON result.
Clarinet Concerto No. 1 in C Minor, Op. 26: I. Adagio - Allegro
Radio Sinfonieorchester Stuttgart des SWR
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169535bbfa98977669bd4c9d356356ee522b6ab5dc2e65a844342c64f47eeccc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB958408801 — a six-check JSON result.
Clarinet Concerto No. 1 in C Minor, Op. 26: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22937de15ff77d0a5bd5706adcbf59c5f374048bd76894a54e31fe3136647592. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB958408802 — a six-check JSON result.
Clarinet Concerto No. 1 in C Minor, Op. 26: III. Rondo. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22aee44066c0f8e277ec19b135f91e63f3f90a43860d406a0f2d494da06150. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB958408803 — a six-check JSON result.
Clarinet Concerto No. 4 in E Minor, WoO 20: I. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a121fce7505240f9c1b0a2cc111fa41d90e76de8f5af65ae41bc10dddc1b0dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB958408804 — a six-check JSON result.
Clarinet Concerto No. 4 in E Minor, WoO 20: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd7e03334470b49ea835bbd21ce4ba0e487d87d3505c0924890f772c21065b7. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB958408805 — a six-check JSON result.
Clarinet Concerto No. 4 in E Minor, WoO 20: III. Rondo al espagnol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc533f40eec0b7ef70c37a26592b0655d72c889433316924bc46d43b57adc60ec. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB958408806 — a six-check JSON result.
5 Lieder, Op. 49: No. 4, Wiegenlied (Lullaby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e25807b9a01591ae4dfedf12ce40037b7c29f82396653095b71e890d2d3cf7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8804827 — a six-check JSON result.
The 99 Most Essential Classics of the Romantic Era
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6a0cf3ca7fc46b0ee16b500381096a0dba5d5395d509ead47cd1ccfce1a2b7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEL9917010 — a six-check JSON result.