right|thumb|240px|Hermann Prey Hermann Prey ( Berlin, 11 July 1929 – Krailling, 22 July 1998) was a German lyric baritone, who was equally at home in the Lied, operatic and concert repertoires. His Am
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 0x200300c20a681409151e62514699480873877934054e1ddd6b22b02695fe1bdc. 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/833b4b33-4d27-4ebc-afb6-a5a30e889223.json and https://artists.proofprofile.net/proofs/artist/833b4b33-4d27-4ebc-afb6-a5a30e889223.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mahler: Symphony No. 8 "Symphony of a Thousand"
Schubert: Lazarus, oder Die Feier der Auferstehung, D. 689
Bach, J.S.: 13 Sacred Cantatas; 13 Sinfonias
Selig ist der Mann, Cantata, BWV 57: III. Aria "Ich wünschte mir den Tod"
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
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Selig ist der Mann, Cantata, BWV 57: VII. Aria "Ich ende behende mein irdisches Leben"
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R. Strauss: Die schweigsame Frau, Op. 80, TrV 265
Rossini: Der Barbier von Sevilla (Electrola Querschnitte)
Der Barbier von Sevilla (Il Barbiere di Siviglia) · Arien und Szenen in deutscher Sprache (2000 Digital Remaster), Act 1: Sieh schon die Morgenröte (Ecco ridente in cielo) (Graf Almaviva)
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Die Zauberflote (The Magic Flute), K. 620, Act II: Arie: Ein Madchen oder Weibchen wunscht Papageno sich!
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Telemann: Schulmeister-Kantate, Kanarienvogel-Kantate u.a.
Der Schulmeister - Comic Cantata: Recitative & Boys' Choir: Ceciderunt in profundum
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a717bcd61dc0ad90d3e9d35189b52f497ba7cab8ba3d94d9f8ee07d42eeda2. 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/FRZ399100260.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65f53067befa4eecf5adcae19d2ada7879958dba74a3a015c77cfaa54417622. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ399100280.
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: Overture
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: Overture
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Lieber Freund, verschaffen Sie mir die Geigen" (Der Komponist, Ein Lakei)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Ach! Wo war ich?" (Ariadne, Echo, Harlekin, Zerbinetta, Truffaldin)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "O ich möcht vieles ändern noch in zwölfter Stund" (Der Komponist)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Ein Schönes war, hieß Theseus-Ariadne" (Ariadne, Najade, Dryade, Echo, Harlekin, Zerbinetta, Scaramuccio, Truffaldin)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Das! Für einen Bacchus!" (Der Tenor, Der Komponist, Ein Perückenmacher)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Erst nach der Oper kommen wir daran" (Zerbinetta, Primadonna, Ein Musiklherer, Der Komponist, Ein Tanzmeister)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Nach meiner Oper?" (Der Komponist, Ein Musiklherer)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Die Dame gibt mir trübem Sinn" (Brighella, Scaramuccio, Harlekin, Truffaldin, Zerbinetta)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Meine Partner, meine erprobten Freunde!" (Zerbinetta, Der Komponist, Ein Musiklherer, Primadonna, Ein Tanzmeister)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Nein, Herr, so kommt es nicht" (Der Komponist, Zerbinetta, Ein Tanzmeister)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Circe, Circe, kannst du mich hören?" (Bacchus, Ariadne, Najade, Dryade, Echo)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "Kindskopf. Merkt auf, wir spielen mit in dem Stück" (Zerbinetta, Der Komponist)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Du schönes Wesen!" (Bacchus, Ariadne)
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Strauss, R: Ariadne auf Naxos, Op. 60, Prologue: "An ihre Plätze, meine Damen und Herren!" (Ein Musiklherer, Primadonna, Der Komponist)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Bin ich ein Gott, schuf mich ein Gott" (Bacchus, Ariadne)
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Strauss, R: Ariadne auf Naxos, Op. 60, Opera: "Gibt es kein hinüber?" (Ariadne, Bacchus, Najade, Dryade, Echo, Zerbinetta)
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Songs of Schubert, Strauss, Schumann and Brahms
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77568c5b58f2fee291cc47fd05db5f375f205d2613c82ed9981c269edeb791ba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1010292.
Singers of the Century: Hermann Prey – Winterreise, Op. 89, D. 911 (Remastered 2019)
Singers of the Century: Hermann Prey Sings Beethoven & Schubert (Remastered 2014)
Wolf: Mörike-Lieder / Pfitzner: Eichendorff Lieder / Richard Strauss: Lieder
Symphonies of Life, Vol. 64 - Kreutzer: Das Nachtlager in Granada
Wolf: Italienisches Liederbuch - Schumann: Frauenliebe und -leben, Op. 42 - Brahms: 4 Ernste Gesänge, Op. 121
Wagner: Das Liebesverbot, WWV 38 (Bayerische Staatsoper Live)
Brahms: 15 Romanzen aus Die schöne Magelone, Op. 33
Schubert: Winterreise, Op, 89, D. 911, Gerald Moore vs. Hermann Prey vs. Karl Engel (Compare 2 Versions)
Bizet: Carmen, Act 1: Habanera. "Ja, die Liebe hat bunte Flügel" (Carmen, Chor)
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Beethoven: Samtliche Lieder/Complete Songs
History Records - Classical Edition 109 - Great Voices - Hermann Prey & Fritz Wunderlich (Original Recordings - Remastered)
Strauss: Die schweigsame Frau, Op. 80, TrV 265 (Live)
Die Zauberflöte: Der Vogelfänger bin ich ja!
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Die tote Stadt: Mein Sehnen, mein Wähnen
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Schumann: "Dichterliebe", Op. 48 & "Liederkreis", Op. 24
Kein schöner Land - Deutsche Volkslieder
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073d5cabb5617289a9e9581dd310a583f97471193c483ea7d5d3be651813c435. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEF077002610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b2f66c2d1aecfaac1323bc42b1451489adf9a0371eeca3b6e649142adaf07e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF077003080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac354d981ff464e016179293a0167e0d3354edbc2639af0a81feb0ee3eda40. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEF077003200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fceb45cc8543b260d29590190609d7a06abd74777a61dcd70148945beac617. 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/DEF077002620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c7d8dc7a8c5a97ecbfff0ff0d1e412efb1d0a7d1dd0564940a6f5b7fb75867. 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/DEF077003090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3572de610cca659df8776b4e31791ece48490449b4be8701a2f12eac959ebd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEF077003210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc869754b42786ce9d77e317c0b8c8a44fcafd239c200cc1049055c7660cd62. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF077002630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21dce44de386a28a514999c0f57ba8f54dfc5c0db6c46d620b50a82061b91ed. 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/DEF077003100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaaa827a5add34da6a4d7bbf6f83bc91c83f69f16c2cfa32c1666e92ee8c564. 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/DEF077003220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec7d910c32483a3b298548af7d3068d1f7d7e8740bfed654a9fdfe8dcc18651. 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/DEF057004860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba429a280acaa61dd555b859b6956f3ebfc003a954cd16217d29f29bec39a57d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEF077002640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9bc5f315de704f59972c787d47529dc712137b226f586e0b01b8e5d92f8467. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF077003110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9504008d0229aeba5edbd35ec9a245116149f90db94e308f258a67ef6800a42d. 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/DEF057004870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c642aa9146d5a561be31d1f74e4f236344cb26979c288023e515c8786932aae. 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/DEF077002650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a32704f9570dad2445c910e98b3ffa9281e5cbaaaf19c5d58331ee25e6d39b7. 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/DEF077003120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac278f7e767d54a37816b3c1dc3db750984e1cf0e4596c6d357cbc95cda5f2d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF077003710.
Hoch auf dem gelben Wagen - arranged by Fried Walter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6410e9b9a1fde1e76c0fb74be70f67468f1e8d8fe54708123af3995c27e728b1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF077003130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b9a8dd433614f04a0c28142e19bf0ed33209800f26fb45e00ca7ce908a79c9. 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/DEF077003250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28302a4f8211e798dda6937769ab03c1c6fcb37e092529b091faa8b0dff387c. 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/DEF057004880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3e47281844ca3cb0939a7be0b34800421f0057c4dbf1e89a7d833bb676d35d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEF077002670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0efc53ebad81f6e4844b1a7ba6fd2b736d71e0a232dd31f3a76224e2eb56d4. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEF077003140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f03f052f7a7f49a7476d3929048b727fcabee2ad2cc39818c0a5992745198b. 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/DEF077003260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207a374056deec22d70e90b83f85a1ab48b6e8d1434e9f5536b40248609d75c0. 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/DEF077002680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c43bfbea113be34359236e3d23190b97a89597d2b7db0497c66132dd951dbd. 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/DEF077003150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bf629124aba81f5ae764b4595654151d6efdba48c0e42619c7a9df940ae81e. 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/DEF077003270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116a69b5ef2d30fb942e86592f49d027fe360b33ccacce287ec55f6ec5e4af71. 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/DEF077002690.
Im Frühtau zu Berge - arranged by Fried Walter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aeec1c5b8d44aa5d4a555abbe9d6083850fbdf70ce987f5858c5484bb3e12a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEF057004800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffd1a83c8f360112fce7bea00d04bb47587b82c0888d6a01d0b58fbad3dabd7. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEF077003280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102550965aa57d560f00dfd0f79198bc6036a2e4eccca0a1c740820f3f516192. 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/DEF077003750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3ce340cda9d0d0ef049f6b803aaa17d9ff74cda80b44753e5138cdb904922. 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/DEF077002700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadadea7939a118698ed2bf233c635abcbaef939f125fad00c7e97f8ce2433cd6. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/DEF077003170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288d7686282da41a7286b30778a9c9cd84aa71c28feda5b88baac68bba3d8bf9. 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/DEF077002710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fd4a7294ae3c7eb9bbe16155467122d9b9847a0fe0d3066ee7d100e601e240. 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/DEF077003180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13731c9b8b4c4bbdf6a4d16484b342c4b5ec20221c605539707f3a44e597bfcb. 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/DEF057004820.
Hermann Prey - Bravo Figaro (Classical Choice)
Il barbiere di Siviglia, Act I: No. 2, Aria. Largo al factotum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e8fdd3bb5e417b5b2ce5bae93a7ac70f0a7ae480d3427645b1128ac627b090. 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/DEF057130503.
Franz Schubert: Winterreise, Op. 89 (D911)
Opera Arias (Baritone): Prey, Hermann - Mozart, W.A. / Lortzing, A. / Marschner, H.A. / Humperdinck, E. / Rossini, G. (1954, 1957)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02667d2027ad6113bed965a60c429e8592e474ed6ab9d69c7c4ad53e23843743. 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/DEF056830101.
Le nozze di Figaro, K. 492, Act I: No. 2, Duet. Se a caso madama la notte ti chiama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426020da033afc6eab469abdbd9fd2851f00e4e5dadbbe4beae592895303f519. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830103.
Le nozze di Figaro, K. 492, Act I: No. 3, Se vuol ballare, signor Contino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b939f0db984ff936a0ec2a3b6a9d94030abdcca0307e4900412fe7ee9abdac0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEF056830124.
Le nozze di Figaro, K. 492, Act I: No. 4, La vendetta, oh, la vendetta!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c46cc80a7b134a5b027109f170b3413dc759690c3982face2228626be21163. 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/DEF056830105.
Le nozze di Figaro, K. 492, Act I: No. 6, Non so più cosa son, cosa faccio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253c992e590ae298e62321882ea2fbfa093396a26013da6819c88dd73222ff7d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830106.
Le nozze di Figaro, K. 492, Act I: No. 10, Non più andrai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58e12568caad2508140870c3f015e1bc72d866858d6a508b191066a47d478c7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEF056830108.
Le nozze di Figaro, K. 492, Act II: No. 11, Porgi amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d3c17558ae6002f7e874bf92541a74bf6250510695503e2bf95b4365304798. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830109.
Le nozze di Figaro, K. 492, Act II: No. 12, Voi che sapete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abdef85adf9912748223a2c4e1a5e70b32c807391100d0aa5775ad7836117ce. 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/DEF056830110.
Le nozze di Figaro, K. 492, Act II: No. 13, Venite inginocchiatevi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b39513751dd2644e860dbc0311ebd4c130003d5b97e0c5dd725145dc97e21e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEF056830111.
Le nozze di Figaro, K. 492, Act III: No. 18, Vedrò mentr'io sospiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2181107f648bba1f6a0a26a34646262b47d637dcb3abd3171e1617e82e67a0. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830184.
Le nozze di Figaro, K. 492, Act III: No. 20a, E Susanna non vien!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccfffce231989b5d446f7d6f2d4a0b75d27e6ddba5ad829ed9870b8fc1f308f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830160.
Le nozze di Figaro, K. 492, Act III: No. 20b, Dove sono i bei momenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1960a14e1c150391f9597e7d7e5a5581498b7ea3ce1ff51ca80eef52c1b02a1. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF056830161.
Le nozze di Figaro, K. 492, Act III: No. 21, Sull' aria... Che soave zeffiretto "Letter Duet"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2571e35f8bb7ddffa9fbbbdace6d7387632712a251a3e5904657b7624150fce7. 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/DEF056830114.
Le nozze di Figaro, K. 492, Act IV: No. 24, L'ho perduta, me meschina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5da1bb258ab204e7fcf28ed470e5c72f51b0ef3dd090f60a14a94ecfd622ba. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEF056830115.
Le nozze di Figaro, K. 492, Act IV: No. 27, Aprite un po' quegl' occhi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334378258061b55b4069e4cc0a1d25a191b442129e487e7f96d8a9e2ae183910. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEF056830175.
Le nozze di Figaro, K. 492, Act IV: No. 28a, Giunse alfin il momento
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Le nozze di Figaro, K. 492, Act IV: No. 28b, Deh vieni, non tardar
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Le nozze di Figaro, K. 492, Act IV: No. 29e-g, Finale. Gente, gente, all'armi... Questo giorno di tormenti
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Die Zauberflöte, K. 620, Act I: Der Vogelfänger bin ich ja (Papageno)
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Wir entdecken Komponisten: Wolfgang Amadeus Mozart – Das Wunderkind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a8faca976ef049c34eb021b427171bcf92d7bc779d148773e5ac9630db831c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058231607.
Die Zauberflöte, K.620 / Act 2: "Ein Mädchen oder Weibchen"
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Strauss Jr., J.: Der Zigeunerbaron, Act 1 Scene 2: No. 2, Entrée - Couplets, "Als flotter Geist, doch früh verwaist" (Barinkay)
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Der Zigeunerbaron, Act II: Entrance: Her die Hand, es muss ja sein
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Kein schöner Land - Die schönsten Volkslieder unserer Heimat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28798668e555bbd7865c6a424e1cee0cc7c6b4b5a3149b9d565adc056a2d7a98. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF067800070.