The NDR Radiophilharmonie is a German radio orchestra, affiliated with the Norddeutscher Rundfunk (NDR) in Hanover, the capital of Lower Saxony. The orchestra principally gives concerts in the Großer
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 0x3432cf7b54cb14cd4f83d8d70064e2f4d07cec07ed86cabe899818d959385b63. 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/558ebb43-76fe-4617-b729-7b3536d820d0.json and https://artists.proofprofile.net/proofs/artist/558ebb43-76fe-4617-b729-7b3536d820d0.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Goldberg Variations, BWV 988: Aria (Arr. for Violin, String Orchestra & Harpsichord by Andreas N. Tarkmann)
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 0x4dda3a61cfe3a6aa494ae51dd9114e38df85e6586403ed0675f6dc7b662a9d3c. 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/DEE862001524 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.16 (Arr. for Violin, String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd93c9417ec786c8445aa128bc08afab84dcdee0555b1bc7ba10932f56ebbbd. 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/DEE862001536 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.1 (Arr. for Violin, Viola, Cello, String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedcecfd1c7d7a1bcd3e57f24b118ff4d5c44359b447551c068aff40ddcd97a0. 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/DEE862001525 — a six-check JSON result.
Four Variations from "Goldberg Spielt" for Violin & String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167485daf15c15d31c38aeb7322379ab2750dd36d951f0957d76100b4d0f3285. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEE862001537 — a six-check JSON result.
Dialogue with Bach - A GoldbergReflection for Violin, Harpsichord & 14 Strings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f58937eb54933d27d25a773ae5f8c9b5bbdeb9cbbbe067269e5deefbde533f4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001526 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.19 (Arr. for Violin, String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a0ebf4e7957f5237408884fc778c72f90d48037132ef9269f08dbac4dfc71e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEE862001538 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.7 (Arr. for Violin, Harpischord & String Orchestra by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd602bc155efd55178cfbdac7d7531a1074a9ba2ca0c3785c6775185fda806e21. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001527 — a six-check JSON result.
New Goldberg Variations on a Theme of J.S. Bach for Violin & String Orchestra: I. Heaven or Hell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf878f1bf7f5dd80ac9cac9d5601802d786704ab225a978d54d290acc4595ef53. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001540 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.8 (Arr. for Violin, String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fd1ffe046f03ff9eb55ce8274726c5a87d122d396317c1254504412098d264. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEE862001528 — a six-check JSON result.
New Goldberg Variations on a Theme of J.S. Bach for Violin & String Orchestra: II. The Elements
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c4db8df9b2fa7830a5b5670fa8819d95dd9616ad2b36188bba834713be5a6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001541 — a six-check JSON result.
Goldberg Hallucination Remix for Violin & 18 Strings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd2457be26808cb30ed8d600c6d9e7dcce154ad4f6166547f2accd0be2ea4ba. 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/DEE862001529 — a six-check JSON result.
New Goldberg Variations on a Theme of J.S. Bach for Violin & String Orchestra: III. The Moocher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5e261984f4f5578bbf3d3ab5da901d52620fda7e638a01383c15f55301083b. 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/DEE862001542 — a six-check JSON result.
New Goldberg Variations on a Theme of J.S. Bach for Violin & String Orchestra: IV. Metal Quodlibet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51cac81bd5bde365a172c90ffd375eda249d81be01e3e6d53b93ed682ba55a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEE862001543 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.10 (Arr. for String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4d072e4789e02ce3a1c9b1f26fa78131da51197d4cdbf42b3818f4632f39ee. 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/DEE862001531 — a six-check JSON result.
Goldberg's Last Summer for Violin, Piano and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a20fe5afceee35dabe1c71db5f9565d7791de6143ccddb4927fe246264a39. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001532 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.22 (Arr. for String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3737c0bd96346e2142eb58b025ba471f5835713c0528ae2710d2bb1069bcb42e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEE862001545 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.13 (Arr. for Violin, String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c28ffcdf852fd81630ac28cf6b86468c3b25664e2faaa8fa5741b77a836350. 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/DEE862001533 — a six-check JSON result.
Sleepless (Goldberg Goes Crazy) for Violin, Harpsichord & String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b54f9874c982c551857645a33e4d6fac1f5cdad822d492b6577c0e77ab5c149. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEE862001546 — a six-check JSON result.
Sleepless after J.S. Bach for Violin & String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18acaeafa438cd4ed497ad7af0b66f2056b7b49a9631ecc216f3289c8e9c3829. 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/DEE862001534 — a six-check JSON result.
Goldberg Reflections Aria for Violin, String Orchestra & Harpsichord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d0cc72bd23671760dcc185c78809f295e8fe608efa65a15f90b9130418aadb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001535 — a six-check JSON result.
Reflections on a Dream for Violin, Verrophone and String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc0961a479e389a8f33bd8460a42a4bb924087d17b66e33a8f63fd8b5851b20. 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/DEE862001548 — a six-check JSON result.
Goldberg Variations, BWV 988: Var.30 (Arr. for Violin, String Orchestra & Harpsichord by Andreas N. Tarkmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70d57671cc5c671f9344cebcc9ee4bdcd122cf5fef0bf27653f5e68767d2a15. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEE862001550 — a six-check JSON result.
GoldBergHain (Quodlibet on "Kraut und Rüben haben mich vertrieben") for Violin & String Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb72a6ac1ed26416a8a401ae0a7893f00db4eb503e8f90ce8d2edcfea62e80. 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/DEE862001551 — a six-check JSON result.
Lullabies for Three Flowers for Violin & String Orchestra: I. A Lullaby for a Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ce51bd0d6077132d438ee2c096b490dcd178dcf5269675842522a2d314396b. 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/DEE862001554 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fece77942678b0ad19a03963b6e6c964cd468cf6a0868079344082beb57beb1. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421803601 — a six-check JSON result.
Ben-Haim: Symphony No. 2 & Concerto grosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb0d9bb403acc01022b66421455f75be6aa9353f5c59ee46542adbaf48e1764. 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/DEB201067701 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3609903ed1addb36ac10811c8c663df8eb3ef406d44de0fcdbaf326bce1af4ae. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB201067702 — a six-check JSON result.
Symphony No. 2: III. Andante affettuoso e languendo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f978d8c3fbfc34cfca0f179f7f0f80ad75c2a239d9305b4792110a42d2257. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEB201067703 — a six-check JSON result.
Symphony No. 2: IV. Finale. Allegro deciso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7c7bf8aa4d88ca830e217213996e2eef88115a5af4ae4c8e420a932dec736c. 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/DEB201067704 — a six-check JSON result.
Enescu: Violin Concerto & Fantaisie for Piano & Orchestra
Tal: Symphonies Nos. 1-3 & Festive Vision
Bruch: Violin Concerto No. 3, Romanze & Konzertstück for Violin & Orchestra
Enna: Violin Concerto, Overture Cleopatra & Symphonic Fantasy
Spohr: The Complete Works for Clarinet & Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb72a6ac1ed26416a8a401ae0a7893f00db4eb503e8f90ce8d2edcfea62e80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862001551 — a six-check JSON result.
Classical Music Essentials - Best of Orchestral and Piano Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6336d57f7bde42f86e8fc0623b3e4425115ea5eb20afb1d3dab6544259ab42. 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/DEE861903699 — a six-check JSON result.
Zelenka: Laudate pueri, ZWV 81: I. Laudate pueri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a8661e561a4be9c08b7c26dd2c96b8b1429615c7d6369fa6bab139285f9c57. 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/GBAYC2202286 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3428d3de6fc790805ae5af332006b5ad678a9ee52c55e4edd3aae6741b70a92. 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/DEE861902686 — a six-check JSON result.