Dalton Baldwin (December 19, 1931 – December 12, 2019) was an American collaborative pianist. He made more than 100 recordings and won numerous prizes, working with outstanding singers such as Gérard
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 0x45ad0eeb3d9c714dd72cfd2cb932459c633faa94ebc7082b41f93e15f29472ae. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37b8322b-8197-45fc-be4d-4e67177182b7.json and https://artists.proofprofile.net/proofs/artist/37b8322b-8197-45fc-be4d-4e67177182b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strauss, R.: 17 Lieder; Wolf: Italienisches Liederbuch
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 0x0967f45275f231daabcc2fea8bf0dc54687c42a1dec8a793623a8810b601a58e. 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/NLA507200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c75db598c646fedcca7f9d3192bae82976fa395b3445031a56e8292c7af183. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f10245b7463a8b82df7d6bda57bf1f1a8bf9e6e0afcb0643ad2a532fef2a1ba. 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/NLA507300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e36aa9028b72314c5a38392cf2f65fda3ab06c4184454bc89f07d13894ea24. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLA507506010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb220a4c0e8989a7626f66424fa9aa9d8356945ac5aba5dd92da0b6c387057. 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/NLA507919912.
An die Musik - Schubert: Lieder (Elly Ameling – The Philips Recitals, Vol. 11)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb220a4c0e8989a7626f66424fa9aa9d8356945ac5aba5dd92da0b6c387057. 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/NLA507919912.
Espagne de rêve, rêve d'Espagne Boléros séguedilles et Habaneras (feat. Philippe Bernold)
Posthumous Songs of Alexander von Zemlinsky
Charles Wesley: Sacred and Secular Songs "Geistliche und weltliche Lieder"
Songs of the Wild West: The Art of American Song
Songs of Richard Strauss, Live in Concert
Singers of the Century: Gérard Souzay (French-Spanish Song Recital)
Schumann: Liederkreis, Op. 39 und andere Lieder
Weill: This Is the Life and Other Unrecorded Songs
Charles Wesley: Sacred and Seular Songs (Arr. for Voice and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d96d42d6a0d4f44590fbf6f9e60331dd700aecf36db9f5ceb64edee5c4c655. 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/DEF056101600.
Trois mélodies, L. 81: III. L'échelonnement des haies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade5b1cb1d4a6613697c9c6f5b6a3ea1101c553fbe6abcb4c2ff6d93bb8709dd. 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/DEF056101651.
Beethoven: An die ferne Geliebte; Brahms: 10 Lieder; Schumann: Dichterliebe
Songs by Brahms, Richard Strauss and Mahler
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4072dcf214dfb9e519ff636eeec45eb2ee86433e4803eb85694c87655f750ce2. 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/NLA507802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ce16db1c9d4b57693113964b6e45b2672025eb7bc9b71ef7f2d4013bbcc9eb. 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/NLA507802010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08b62985de496881c3d396f5c042beb83d69c7dd90c5048dc6496c3a8ec3cfd. 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/NLA507802012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a940c5b207fd1e466f4d255911f217c73ae7eafb04e0f354efe079fdd8e4bd. 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/NLA507802014.
Mozart: Lieder (Elly Ameling – The Philips Recitals, Vol. 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9415c6ea3d1fab0916bf5d00c48f35ba55b1910daabbc3eaf5c4d8afdcced0. 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/NLA507622108.
Se lontan, ben mio, tu sei, notturno, K. 438
Members of the Netherlands Wind Ensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed56614cc8ed543524329843941a9fab13d7fc538b2a7472d50b408457f7443. 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/NLA507301029.
Ecco quel fiero istante, notturno, K. 436
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aa1d33368e62b06d08827c396467ee9adcb17083c80a2c40c41908f1b858db. 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/NLA507301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde3786efd062788bec691984c0646f9b8efacc0dddf45715976a2b93ab7e83a. 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/NLA507301005.
Les chemins de l'amour - Songs By Duparc, Ravel, Poulenc & Satie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1854289f8dbf332306a0ef8332e2cdcd935b89ba2ac30f4ee16895658315c89. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLA507602002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2880e1e6c36cd51b0e51b36d28b383e2b60f7d1f80272128db1c039b4ae85177. 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/NLA507602003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41650e90be3bbf916e7ad0275e9630ac7c4b47a3d2c0035e59d6f80ad2ab2691. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507602004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e19d62cdbc325290fd4688f727ec17b4081319980e63d2e55995f3dcd62541. 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/NLA507602010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35d93cfb172b3b8f78b1d4a81d0be889ec443d1daed888c60f3dacfbc04a139. 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/NLA507602011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f4a884f676cbdecb77152324b25d87b7788c9eaba923e4083ee58aeddfa22. 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/NLA507602014.
Brahms: Lieder (Elly Ameling – The Philips Recitals, Vol. 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3466321e9ba9787dcc88999c72055a7cecdf31c099a8c18725e8199004d5e429. 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/NLA507616902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292c48617c4ba94ccc71382e2fed4d026aa1713a57ac589d86c83e1286912b20. 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/NLA507616910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d1c3ce2920ea68be8fc061c38efa9abb964a55e70fb89eb2fbcaaedc432af9. 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/NLA507616911.
Schubert: Goethe-Lieder (Elly Ameling – The Philips Recitals, Vol. 9)
German Romantic Songs (Elly Ameling – The Philips Recitals, Vol. 18)
Schumann, Schubert: Lieder (Elly Ameling – The Philips Recitals, Vol. 15)
Schubert: Lieder - Songs for Gretchen, Ellen & Suleika (Elly Ameling – The Philips Recitals, Vol. 12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e36aa9028b72314c5a38392cf2f65fda3ab06c4184454bc89f07d13894ea24. 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/NLA507506010.
Schubert: Lieder (Elly Ameling – The Philips Recitals, Vol. 10)
Wolf: Mörike-Lieder (Elly Ameling – The Philips Recitals, Vol. 20)
Wolf: Italienisches Liederbuch (Elly Ameling – The Philips Recitals, Vol. 19)
Schubert: Winterreise & Extrakte aus Schwanengesang (Stereo Version)
Schubert: Winterreise & Extrakte aus Schwanengesang (Mono Version)
Gérard Souzay chante autour du monde (Stereo Version)