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 0xa232967e391eb4660d09f9f0bf76b76c825f7d8aeec39858f7f45df194aa3f03. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b06ec40d-0db6-48fe-9066-ea92cb180ae4.json and https://artists.proofprofile.net/proofs/artist/b06ec40d-0db6-48fe-9066-ea92cb180ae4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xde60f0621a98f7cc2f948baaae46492179cae3f724ff22be40e35404609d7029. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:24:25Z), 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/NLY331305326.
Fidelio, Op. 72 (Ed. Lühning & Didion): Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138db7d01f6e2b9ef0dd53a127a12ec24802c06418e0cb297c11a781deaa5ffe. 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/GBBBA1045701.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Introduction - Gott! welch Dunkel hier! - In des Lebens Frühlingstagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a008ea3e356d78445b1e16cf7832c0bd125fc89bd2b368cfe288a41a46c9d2. 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/GBBBA1045723.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 1, Duet. Jetzt, Schätzchen, jetzt sind wir allein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088344c0b96c891daed27384bbc55d6b67414758aba2ad5d8b9e6b15a6e4c65d. 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/GBBBA1045702.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Melodrama. Wie kalt ist es in diesem unterirdischen Gewölbe... Duet. Nur hurtig fort, nur frisch gegraben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bcc94c511bddd5e9cdec3b4794bd116e42963b7b9a329e46a4ec0cca46b677. 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/GBBBA1045724.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Dialogue. Ihr habt wieder geruht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072bce8f9660a24622d29aa85684eb4891987baa755b50077edb21f2a0c502f4. 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/GBBBA1045725.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 2, Aria. O wär ich schon mit dir vereint
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5c1924f51f962ab03d1f0159878dad5ff04e64e3848706cfc14ba172417296. 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/GBBBA1045704.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Euch werde Lohn in bessern Welten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1959f5a496784f5b6b03ee3bce991487d8dbad80dc996c588c07fbbf01bfc7. 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/GBBBA1045726.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Dialogue. Ich täusche die Menschen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d1503eed181a6cd87d74cf60c54511d62ed3941e73f6cbab4773f247c0e7c. 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/GBBBA1045705.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 3, Quartet. Mir ist so wunderbar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75257544ee1b22c870723a373e76c2295b264a3b821a73d9ce68f7ceebd13282. 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/GBBBA1045706.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Quartet. Er sterbe!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d601c9867dcaabb1adcd01f98bda98cb1340f9d2a911b6a2a719f7fcaceb6. 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/GBBBA1045728.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Duet. O namenlose Freude!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d14bcd42127a0a9e312e1fdb3976393f93edab02d222fe0a86235ff6c6cf7e1. 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/GBBBA1045729.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 4, Aria. Hat man nicht auch Gold beineben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a59558a0ee700828d289600624541442ccd06dde642738cf12700df989a93d. 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/GBBBA1045708.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act II: Finale. Heil sei dem Tag… Des besten Königs Wink und Wille... Wer ein holdes Weib errungen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8276f8bf7763b1d7f99293b7962d71af5f9c5e9a564e822cbb60057c927a9a9. 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/GBBBA1045730.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 5, Trio. Gut Söhnchen, gut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155ddc0a0bba253210d351888ba5f94e7c06bff24f8f00e442b884d53663382a. 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/GBBBA1045710.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 6, March – Dialogue. Drei Schildwachen auf den Wall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae17020e64071b84add07df490bffd018719e9431adf854efbe3a91c6697333a. 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/GBBBA1045711.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Dialogue. Etwas neues vorgefallen?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79649e90b35b837a2c3dcc92eb062a2b0e15ab1a499ed1c148118eb7a1508f2. 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/GBBBA1045712.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 7, Aria & Chorus. Ha! Welch ein Augenblick!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f7d80fe89d05b0c0515cb48504651fa7e11a56a384c2dedd1f19933b0d1985. 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/GBBBA1045713.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 8, Duet. Jetzt, Alter, jetzt hat es Eile!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a4c44b9a346ca491219e7f7dc2d7af0c047595f942df7dd9431a78fdd30eb6. 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/GBBBA1045715.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 9, Recit. Abscheulicher! – Aria. Komm, Hoffnung, lass den letzten Stern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc796c0a32527ab03ac7fa50e602545125e19c1b4af93cae8892d5ed4457bcba6. 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/GBBBA1045716.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: No. 10, O welche Lust, in freier Luft "Prisoners' Chorus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950e74b7e29cf45401fb400b5a4d102b43caff3e1aad1ad6fbaf712b3375d87e. 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/GBBBA1045718.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Recit. Nun sprecht, wie ging's?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4856044dbac635b29f3a1c6555fc5783806ecf5dc0970be06c546b88fcf764. 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/GBBBA1045719.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Recit. Ach! Vater, Vater, eilt!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe94c1519ca2e56044f8ad79e519c5479a538b0d35900fef3bc793d29e9910e. 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/GBBBA1045720.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Dialogue. Verwegener Alter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a381537d6249a15785f4d1cdd41dff5b915f29b435b004fa054e29e0081c3. 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/GBBBA1045721.
Fidelio, Op. 72 (Ed. Lühning & Didion), Act I: Recit. Leb wohl, du warmes Sonnenlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46751f8b5a0f90903e68beb7b3e583d4ef5612b5c01e704db044dadb4d525b9f. 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/GBBBA1045722.
Choral Classics: Mendelssohn (Sacred Choral Works)
Glanert: Requiem für Hieronymus Bosch (Live)
The Seven Last Words of Christ on the Cross, Hob. XX:2 (Oratorio Version): No. 2, Fürwahr, ich sag'es dir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f872c711e5a6123ea8aa7383d20bbf8e8bedf5650bf35c33432411f4403d8a9. 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/NLY331208277.
The Seven Last Words of Christ on the Cross, Hob. XX:2 (Oratorio Version): No. 3, Frau, hier siehe deinen Sohn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6632c2691cab93ad43d69647b615bd270964e5955343ef54ebdcbf2d74d88b. 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/NLY331208278.
The Seven Last Words of Christ on the Cross, Hob. XX:2 (Oratorio Version): No. 4, Mein Gott, mein Gott, warum hast du mich verlassen?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbb634847c8a2ff51d57c0bdf479045160a330f41a248bed3c257e5c99c00a7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:41:04Z), 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/NLY331208279.
The Seven Last Words of Christ on the Cross, Hob. XX:2 (Oratorio Version): No. 5, Jesus rufet. Ach, mich dürstet!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992874719b7477b233a4c223738dcbdf6b720d6ff3ea398dd2afa668d9a3d57. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLY331208281.
The Seven Last Words of Christ on the Cross, Hob. XX:2 (Oratorio Version): Il Terremoto (Das Erdbeben)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d9f1b03e050fdb52a3ec7ab5e6a6635f695f034c6b192a0c8025d778173c0. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:50Z), 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/NLY331208284.
Missa Brevis In B Flat Major Kv 275: Kyrie
Kurpfälzisches Kammerorchester Mannheim, Nordic Chamber Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2304e74ebba8356b2c500ae06a02ac846eb5b45629b3b7f74a8fad3d5a509dbe. 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/NLN580515585.
Missa Brevis In C Major Kv 259, Orgelsolo Messe: Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ba522ce8c5ae72574f3e7f646d3c660a46904b5ed6adbc5ce42bd3be819dfa. 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/NLN580515597.
Missa Brevis In C Major Kv 259, Orgelsolo Messe: Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98d547acc99f25099791163f83c8395367fd157c8eeb184c2c10d8a6a44bd5e. 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/NLN580515598.
Missa Brevis In C Major Kv 259, Orgelsolo Messe: Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169556e740979223f3725ffe6985c6c3511df51ce68ad262a7f3a9d560d74487. 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/NLN580515600.
Missa Brevis In C Major Kv 259, Orgelsolo Messe: Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a87c394783a2c4084878f26cb5d0d4fa066f89e28c2400111925aaf706ebc8. 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/NLN580515601.
Haydn: Die sieben letzten Worte unseres Erlösers am Kreuze, Hob. XX:2
Mozart: Serenade No. 10, "Gran partita", Requiem (Fragment), Ave verum corpus [Live]