George Alexander Albrecht (15 February 1935 – 21 December 2021) was a German conductor and composer, who also worked as a musicologist and academic teacher. A prolific composer at a young age, he was
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 0x855e364d0d4f10cc679407fea76578fc606b9309e8f7982dcab521d9b18e671a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03c93ca2-1fbb-46d1-aa92-faf11293cd4e.json and https://artists.proofprofile.net/proofs/artist/03c93ca2-1fbb-46d1-aa92-faf11293cd4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": I. Allegro
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 0x6bb4eb52d97bc3de2c9b188993c0f890c48fc16df6a16a73bdbacee5e0d4bb61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEP629501034.
Die Zauberflöte, K. 620: Der Vogelfänger bin ich ja (Arr. for Oboe and Orchestra by François Leleux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0ceb2153d3abfc357e619e1473f844e952991eb27949b542cc54a62b41d3af. 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/DEE860800577.
Clarinet Concerto in A Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3a76d16b143d526cdd0d47b67cfae1f48029d738671df327142808c45a935. 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/DEP629600855.
The Nutcracker Suite, Op. 71a: II. Danses caractéristiques: Marche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad519f7c624baa8b7f74a2334029491fc1a1eb2b3f3a09256bf9f546605ba895. 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/DEP629700765.
Piano Sonata No. 11 in A Major, K. 331/300i: III. Alla Turca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1bab5217cc3758a63e98f807dff420f21cfa6fe6bba9c7b9f284088f7d56c8. 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/DEP629600099.
Serenade No. 7 in D Major, K. 250, "Haffner": II. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdbfa94860b53c1e6b02fa3e5f9f5149387e8db4382ea33d2a435585905811e. 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/DEP629900243.
Piano Concerto No. 21 in C Major, K. 467, "Elvira Madigan": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463da072b983cf21872aa39396ffa27cec5736c0fccfead4fa5efb25ad3e8a8a. 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/DEP620100861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b8a52da878c86ce8299aaf9e695ab7792b3332f96af66aeb5dd2ac40b642cd. 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/ATS019000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2c49a30797059dd8f007956fc916aa21b51d1f527eadb214274a33e503e015. 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/ATS019000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3816a0de879b07e3dbb54a27e6cab49e595cf035fa3140b43f063c29bdfcf45b. 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/ATS019000205.
Variations for Piano on "Ah, vous dirai-je, Maman", K. 265 - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90a8f48c514abff7e9fd1a742040dd0175c9f63947961be59f10f3bf35ed306. 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/USSM11200664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40c59e1cd1feb3b19e93229d28ce543c4d073a8a9072e33c536417fa4b6aa8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM16600612.
Eine kleine Nachtmusik, K. 525: II. Romanze. Andante - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc158ab772cfa1793ed9dbe1074f864ce8983b925c28de995924218c3fc7c102. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM10601728.
Goldberg Variations, BWV 988: Aria. Andante espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da3187c6e78e37d255b4403cf73194771ea57b8d555cc97a0dade2021c47bf6. 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/DEP629500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP629700792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3a76d16b143d526cdd0d47b67cfae1f48029d738671df327142808c45a935. 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/DEP629600855.
String Quartet in F Major, Op. 3, No. 5, Hob. III:17: II. Andante cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103ebad7bb061aab48dd85ac4829ccc6a5aea5026602288abdb39bb7a240f45. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM18800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2fefa0ddcf65135cab7274fa6a65578056ceb4ae3fce241c2890c586d03b1a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP629500777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7be19b468bd3e7afc2a2d98db13c67a13170328bac5b2c609f902e179a25d0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSM19924041.
3 Nocturnes, Op. 9: No. 2 in E-Flat Major. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c62f165cc8725788f67746d92a55ec8d8a0737a9fc191ba65186dd3fa458bbd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM19930467.
Little Suite from the "Anna Magdalena Notebook"; III. Bist du bei mir, BWV 508
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb303931c5b4036c40a3c966200106fed1d4ae97c84426c68d6714f813fd3483. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM10411109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8020721e5efbabd48d8f146ea2becae129b9c1a0a3e96e763fe09079fff655ec. 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/USSM19925397.
Air ("on the G String") from Orchestral Suite No. 3, BWV 1068
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d50c855fcb5b3f219c23f7f9af7d6e721d96e61724615e7e6b44cca75015a21. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM17600460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2855c551a5e798c5d5851c55034f0ca01edb223106c39bbd1249fbd1e21a269. 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/DEE861200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd484847cc1155cb42cc363dd33fe493d44f81f3cccf80159c02f9fe8aa8c65a. 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/DEP629700792.
Das Klassik-Einmaleins - Das musst du kennen!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c40d863079dc598245b5efcef1e5ee85a0c87d0cfbdc82fb3ac1275161785f. 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/DEE861300912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d50cef86568727be3bdf095c359ac35fa1298ce2fcf6787b7fdfea86b86f3e4. 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/USQX91201619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f102416daae4ddb16a722b360b914666a9a355bfe81b4057180f77e922a0827. 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/CH0011300331.
Mendelssohn, Albrecht & Dvořák: String Quartets
El cant dels ocells (Arr. for String Quartet by Gropius Quartett)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3391809b659e779e34a7390aca1b17ba1466bc269e4f5085129a64ae79eadfc3. 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/DEAD62307614.
Rudolf Hindemith Edition, Vol. 1: Chamber and Piano Works
Mozart: Clarinet Concerto/Symphony K. 551"Jupiter"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3a76d16b143d526cdd0d47b67cfae1f48029d738671df327142808c45a935. 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/DEP629600855.
Mozart: Clarinet Concerto - Adagio (Excerpt)
Mozart: Clarinet Concerto - Adagio - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0b2e5f076111fde56ecfa9277988f67e696b7968ab72effead53abecd67400. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USSM12408972.
Mozart: Klarinettenkonzert, K. 622 & Klarinettenquintett, K. 581
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3a76d16b143d526cdd0d47b67cfae1f48029d738671df327142808c45a935. 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/DEP629600855.
Clarinet Concerto in A Major, K. 622: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918eeb5327401452fc6d1a3bb32d23c5b97200118bad7a797fc418b1adfdf52c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEP629600856.
The Seasons, Op. 37b: X. October - Autumn Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb923b75df645d94ba844fe1c80b6b55bb75cf9a002e0919417c0e8bc025ccd08. 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/DEP629501261.
Le carnaval des animaux, R. 125: XIII. Le cygne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a974636a6be2a6d224788f02def8723a0386154ebf457f70acfad9f94826739. 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/DEE860100785.
Maros: Oolit / Descort / Dimensions / Trombone Concerto / Circulation / Concerto Grosso