Aldo Baldin (January 1, 1945 - January 5, 1994) was a Brazilian classical tenor, known for his interpretations of music by Johann Sebastian Bach. He performed internationally and made many recordings.
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 0x70f7d50373df293ae32de58858ca47baf8670bf75c90106f7837d2d5751ac061. 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/4e0f1ff0-f961-4a56-99d7-546bffa3babf.json and https://artists.proofprofile.net/proofs/artist/4e0f1ff0-f961-4a56-99d7-546bffa3babf.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x122c150a934bd0057dd08ff3329630ef7257a90b04b8491578171d6494342cdf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400101 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Cinque... deci... venti..." - "Cosa stai misurando"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae4b50846f6dbc574f2549eb656810fe3f9c23a1b8f889005c7faab16860b54. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLA508400102 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Se a caso Madama" - "Or bene, ascolta, e taci"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee5a9f6422320bfe6e1d4bcbb49c71f0e809deb85342592431e5f29217519d2. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLA508400103 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Se vuol ballare" - "Ed aspettaste il giorno"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c7f70a3b8d7e8000a03b75cfbf863db846cbd170e12bc4f5f46d79465e5a6e. 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/NLA508400104 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "La vendetta" - "Tutto ancor non ho perso"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f355ef366aec0be41f2379487cefb2f377bd06c77767446b24efe639d7ea38. 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/NLA508400105 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Via resti servita" - "Va là, vecchia pedante"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999ce681dd5dd872707e31c0ea150a6fe2d4b06070fe4628bb189794c6472d95. 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/NLA508400106 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Non so più cosa son, cosa faccio"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc1ee8a2a9d53ff032fada3425d520610f9686b8a54fb9bd99d94954d2df41b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/NLA508400107 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Ah, son perduto!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982e8a281a3db23b5b778749af3292dd3674710156e7a011de9a876a84d3bded. 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/NLA508400108 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Cosa sento! tosto andate" - "Basilio, in traccia tosto"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb46ffe1ea568954341855abbcf1d21ec0b7f36191ccb60c9bc0788e882f0ca. 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/NLA508400109 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Giovani liete" - "Cos'è questa commedia?" - "Giovani liete" - "Evviva!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f40aab63f037a273f23f62d158e1be924b36f6c37f28f70aee369452a453840. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400110 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 1: "Non più andrai"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c5de26a98afc10c0de14acbea867fa52e2801d980a5d1ce7254df5fdd6b5c. 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/NLA508400111 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Porgi amor"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe0c6cd4180ab87c88a6b76fd2cfdf2671282e0fe37772b9f174ba368bd345f. 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/NLA508400112 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Vieni, cara Susanna" - "Quanto duolmi, Susanna"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489c1be9fc93649077d9eae1bb17253af53154613f8eae06be9fe64c945a7caa. 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/NLA508400113 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Voi che sapete" - "Bravo! che bella voce!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab946367e3e0efc6ae4069afc42ad20a8f6c2e36ca1082e80011cc8f1bd10a60. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLA508400114 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Venite... inginocchiatevi..."
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534727297042b21106678fa2baa9570e6297f553de06525c19e16fca10e5674. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLA508400115 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Quante buffonerie!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95b424786aea4220e687a1ddd086de08b660e85a59866698389926e5538f79c. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400116 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Susanna, or via, sortite" - "Dunque, voi non aprite"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf97039badf09eb3d872e954ec480adc38162799bffb3afa10cde65c83c41f7. 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/NLA508400118 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Aprite, presto" - "O guarda il demonietto!" - "Tutto è come io lasciai"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b682bbaa4a2f80f8e1fd89e907d43a849c15afc6832d038f9ee1ceadd17d71. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/NLA508400119 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Esci, ormai, garzon malnato" - "Susanna!... Signore!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53774560639f15e8b39f80c5cd953a90f3ac3146226f85a6139beb0463c5729. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLA508400120 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Signore, di fuori" - "Ah! signore... signor!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e5d346fa7ede0f4cd18f8fd007ddbcbbd6a7d6618874de6123d6a244edc6e. 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/NLA508400121 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 2: "Voi signor, che giusto siete"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba2eb161f4b9b73a3ec5f4518b051b68b8ff9fbedf159c8e25cba57dae80195. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLA508400122 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 3: "Hai già vinta la causa" - "Vedrò mentr'io sospiro"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8296a25c15b7df3c61b49c76ce45c91a97d98798816f3ae867be62620aed176. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508400125 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 3: "E Susanna non vien!" - "Dove sono i bei momenti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d90d2ca91dc5d3c177a9c9b1c705ba084b5c5e26d5aaa0882a6508655856b8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NLA508400128 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 3: "Che soave zeffiretto" - "Piegato è il foglio..."
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e10c94ffa5960a169ff9cbaf5d4b2042b32e6aa13126916edeee605cc0da04. 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/NLA508400130 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 3: "Ecco la marcia... andiamo." - "Amanti costanti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8f583c603c9fdc3e636f9a1085df229c219234044772ca8689bb17d49b9c9c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLA508400132 — a six-check JSON result.
Le nozze di Figaro, K.492 / Act 4: "Gente, gente, all'armi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248fc93e683a167a1999c9e1fb6c08a1fbfb2e26d4d88ef6e099dea6017e966e. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLA508400145 — a six-check JSON result.
Wachet auf, ruft uns die Stimme, Cantata, BWV 140: I. Chor "Wachet auf, ruft uns die Stimme"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb80d93c10e86df5c3a6e647673a39478c8eb1eed59fd28555d578062df1c11. 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/NLA507918701 — a six-check JSON result.
Wachet auf, ruft uns die Stimme, Cantata, BWV 140: IV. Choral "Zion hört die Wächter singen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ae28ad01d2f4ef9348240d881e4aac452c090b631261b566677ee8089e21c. 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/NLA507918704 — a six-check JSON result.
Ein feste Burg ist unser Gott, Cantata, BWV 80: I. Chor "Ein feste Burg ist unser Gott"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d892182684e4674f3883abafc6e0b21e0ba48de3230661d7f7ef25aa0c07e1. 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/NLA507918708 — a six-check JSON result.
Ein feste Burg ist unser Gott, Cantata, BWV 80: II. Arie "Mit unsrer Macht ist nichts getan"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b464bcbdddd75cada6a25371de05cccbee2d204f179cd2c3fa8332616ab1c3. 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/NLA507918709 — a six-check JSON result.
Ein feste Burg ist unser Gott, Cantata, BWV 80: VIII. Choral "Das Wort sie sollen lassen stahn"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd918f29cfce1f11b2f2705b4e50d896784aecd47b48fe86bf36f6a5a5ca0c966. 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/NLA507918715 — a six-check JSON result.
"Vergnügte Ruh, beliebte Seelenlust" Cantata, BWV 170: 1. "Vergnügte Ruh, beliebte Seelenlust"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c49da1e170ec38e137a46bec2516e14147cd1bb81129edcb43b461303413de. 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/GBF076610821 — a six-check JSON result.
Cantata "Ich habe genug" BWV 82: 3. Aria: Schlummert ein, ihr matten Augen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0320518fadb817455d30fbfcaff95cd4f3c46483c6548dfa751fbc7d9acd168. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBF076419873 — a six-check JSON result.
Heitor Villa - Lobos Serestas, Bachianas & Canções (1887-1987)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a417e6b8f82e6e055a448d6095e587a50ae7fa83aa5b6de784b0ce188073fb7. 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/BRKUA8302912 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbecf23f0c060efd4015d28bfdc04cb329800162768ef0f72f410b817657dac. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBLWD9109007 — a six-check JSON result.
Haydn: Missa Sanctae Caeciliae, Hob. XXII:5
Mozart: Le nozze di Figaro, K.492 - Original version, Vienna 1786 - Act 4: "Contessa, perdono ... Ah tutti contenti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897c57868fc0a8bcbb7fbec790d987b045ada12c31accabcfe4706834f472c14. 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/NLA508400179 — a six-check JSON result.
Wolfgang Amadeus Mozart: Schatten ung licht: Chapter 2: Salzburgs Glanz und Wolfgangs Gloria (1765-1769)
Südwestdeutsches Kammerorchester Pforzheim
Carl Philipp Emanuel Bach Chamber Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffd144f0024c8fb524119b09ff493b81cebf3614558c5abb8a99dc3ab590847. 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/DELW71490602 — a six-check JSON result.