Wolfgang Sieber (born 3 September 1937) is a retired German swimmer who won a bronze medal in the 200 m butterfly at the 1962 European Aquatics Championships. He also competed at the 1960 Summer Olymp
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 0xe670666c3b477111b9949a2a2138478f03cd04c997b96fbe70cf78a120f52eef. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bab3edf-59cd-4c97-92cb-e04d5f1f3fad.json and https://artists.proofprofile.net/proofs/artist/9bab3edf-59cd-4c97-92cb-e04d5f1f3fad.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f50a8e8727f4a7c90c9f44cc0b10c745f8ec0e654a9ca68ed54804ea6789074. 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/SEWDL0741302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c952f621d4286a20351ae834e6b44aebd1bed8e7015b00f8026b292dabda38b. 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/USZDG0600979.
Trumpet Concerto in E-Flat Major: I. Allegro
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24 Pieces de Fantaisie, Op. 54: III. Carillon de Westminster
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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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Concerto for 2 Violins, Strings and Continuo in D Minor, BWV 1043: I. Vivace
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The Seasons, Op. 37b: VI. June: Barcarolle
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Orchestral Suite No. 3 in D Major, BWV 1068: II. Air
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Piano Concerto No. 3 in D Minor, Op. 30, III: Finale: Alla breve
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Orchestra Sinfonica di Milano Giuseppe Verdi
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Peer Gynt Suite No. 1, Op. 46: I. Morning Mood
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The Four Seasons (Le Quattro Stagioni) Concerto for Violin in E Major, RV 269, Op. 8: 1. "Spring": I. Allegro
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Clarinet Concerto in A Major, KV 622: II. Adagio
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Bagatelle in A Minor, WoO 59 "Für Elise"
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String Quartet No. 1 In B-Flat Major, Op. 1: III. Adagio
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Swan Lake Suite, Op. 20: Scéne: Moderato
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The Marriage of Figaro, KV 492: Overture
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Requiem Mass in D Minor, K. 626: VIII. Lacrimosa
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Mass in B Minor, BWV 232, Credo: VI. Et resurrexit
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Peer Gynt, Suite No. 1, Op. 46: IV. In the Hall of the Mountain King: Alla marcia e molto marcato: Piu ivo
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Mascagni - Cavalleria rusticana: Intermezzo
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Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio Cantabile
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Quintet in A Major, Op. 114 "The Trout": II. Andante
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Etude in E Major, Op. 10, No. 3, "Tristesse"
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Brandenburg Concerto No. 5, BWV 1050: I. Allegro
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Well Tempered Clavier, Book I, BWV 846, Prelude and Fugue in C Major
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Concerto for Trumpet and Orchestra in E-Flat Major, III. Rondo
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Brandenburg Concerto No. 3 in G Major, BWV 1048: I. Allegro
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Piano Concerto No. 2 in C Minor, Op. 18: I. Moderato; Allegro
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Concerto Grosso in G Minor, Op. 6: 8 "Christmas Concerto": II. Allegro
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Symphony No. 5 in C Minor, Op. 67, "Fate": I. Allegro con Brio
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Serenade for Strings in C Major, Op. 48: III. Élégie: Larghetto elegiaco
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Concerto for Viola and Orchestra in G Major: I. Largo
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Rhapsody on a Theme of Paganini in A Minor for Piano & Orchestra, Op. 43
USSR Ministry Of Culture Symphony Orchestra
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"Jesu, Joy of Man's Desiring" from Mund und That und Leben BWV 147
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Concerto for Piano and Orchestra No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
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Symphony No. 6 in F Major, "Pastoral", Op. 68: II. Scene by the Brook - Andante molto mosso
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Suite No. 1 in G Major, BWV 1007: I. Prelude
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Hungarian Dances: No. 5 in G Minor: Allegro
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Symphony No. 94 in G Major, "Surprise": II. Andante
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On the Beautiful Blue Danube (An Der Schönen Blauen Donau), Op. 314
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Symphony No. 40 in G Minor, K. 550 "Great": I. Allegro molto
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Piano Concerto No. 2 in F Minor, Op. 21: III.Allegro vivace
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27: 2 "Moonlight": I. Adagio Sostenuto
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Serenade No. 13 in G Major, K. 525 "Eine Kleine Nachtmusic": I. Allegro
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Violin Concerto in D Major, Op. 61: III. Rondo. Allegro
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100 Most Relaxing Classical Music In The Universe
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The Four Seasons, Concerto No. 4 In F Minor (L'inverno / Winter) RV. 297 (Op. 8, No. 4): II. Largo
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Piano Concerto In A Minor, Op. 16: II. Adagio
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Prelude To The Afternoon Of A Faun (Prelude A I'apres-Midi D'un Faune)
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Piano Sonata No. 14 In C-Sharp Minor Op 27, No. 2 "Moonlight": I. Adagio Sostenuto
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Songs Without Words, Op. 62: No. 6 in A Major: Molto allegro vivace "Fruhlinglied" (Spring Melody)
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Piano Concerto No. 21 In C K. 467: II. Andante
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Water Music Suite No. 1 In F Major, HV 348: V. Air
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Well Tempered Klavier, Book I, No. 22 BWV 867
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The Four Seasons: Concerto No. 1 In E Major, Op. 8, RV 269, "Spring": I. Allegro (Danza Pastorale)
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Symphony No. 5 In C Minor, Op. 67 "Fate": II. Andante Con Moto
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Piano Concerto No. 2 In F Minor Op 21: II. Larghetto
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Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": I. Allegro
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Symphony No. 5 in C Minor, Op. 67 "Fate": I. Allegro con brio
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Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso - Allegro con spirito
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Nocturnes, Op. 9: No. 2, Andante in E-Flat Major
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Suite Bergamasque, L. 75: III. Clair de lune (Orch. arr.)
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Piano Concerto No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
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Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco moto
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Le carnaval des Animaux, R. 125: XIII. Le Cygne
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14 Romances, Op. 34: No. 14, Vocalise (Lentamente, molto cantabile)
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Peer Gynt Suite No. 2, Op. 55: IV. Solveigs Song
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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The Gadfly Suite, Op. 97a: VIII. Romance
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Cavalleria Rusticana: Symphonic Intermezzo
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Symphony No. 3, Op. 36 "Symphony of Sorrowful Songs": II. Lento e Largo - Tranquillissimo
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Symphony No. 9 in E Minor, Op. 95 "From the New World": II. Largo
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Trois Gymnopédies: I. Lent et douloureux (Arr. by Wolfgang Sieber)
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The Most Romantic Classical Music in the Universe
Hungarian National Philharmonic Orchestra
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Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: I. Adagio
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Saint-Saëns: The Swan From Carnival Of The Animals
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Janáček: Concerto for Flute, Harp and Orchestra in C K299/K297c: II. Andantino
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Debussy: The Girl with the Flaxen Hair (La fille aux cheveux de lin)
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Tchaikovsky: Swan Lake Suite, Op. 20: Danse Espagnole / Spanischer Tanz
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Prokofiev: Romeo & Juliet Ballet Suite: Overture
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Liszt: Liebestraume No. 3 in A Major, Op. 62
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Schumann: Kinderszenen Op. 15, No. 7: Traumerei
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Serenade No. 13 in G, 'Eine Kleine Nachtmusik' K. 525: II. Romanze (Andante)
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Trois Gymnopédies: I. Lent Et Douloureux
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Water Music Suite No. 1 in F Major, HV 348: V. Air
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Symphony No. 5 in C-Sharp Minor: IV. Adagietto
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Gruss an Bern & General Guisan Marsch - Mit Chor
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c97e2ee2829f6484131f18dce2dcc5feadcac6932a7556e18a4bbe80ea75c89. 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/CH0491210014.
It's a Long Way to Tipperary / Muss I Denn Zum Städtel Hinaus / The River Kwai March - Mit Chor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7bcd32e6c2077188a5d4a380db20c04e3bce05975bd666e72275f0ec17839b. 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/CH0491210020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592c9edc343236cc5362f18cf50a23860593b1564839019c0b27aa951c43ad69. 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/CH0491210021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65df47bf4abb4668bd6f1911883687536f722df3c9898088abba3fb8e0fffce7. 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/CH0491210016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c991d5acfa3b71c4856457db6da50922a2eff46ffaa4f84ee5d4905d5f68e4b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0491210019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe711bc4fb02f36f814126c244902b5205131a25aedac8a1bd2dd8549c79d52e9. 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/CH5001401019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cb9043374c0f4ee88f145cb9d31b121fa7c906e7ea242e40e9d661f18d43f5. 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/CH5001401021.
Mer juzge dir zue! (Innerschweizer Volksmusik III)
Hesch g'meint! (Innerschweizer Volksmusik II)
Fröhli z'Muet (Innerschweizer Volksmusik I)
Della Torre & Sieber (Innerschweizer Volksmusik IV) [Live]
Messiaen, O.: Nativite Du Seigneur (La) / Le Banquet Celeste
Hungarian Rhapsody No. 2 in C-Sharp Minor, S. 244/2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cbe0ffd80c41c42f86ebe8261ae04ca0d005b8f63fd0846f37e0aac30372cf. 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/SEWDL6018053.
Années de pèlerinage II, S. 161: No. 7, Apres une lecture de Dante (Fantasia quasi Sonata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7bfb594d37d22f6298735be8cc81d06e10ca1ecbde8db6b5bf46c3ddb0bb6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEWDL0753704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858108ad053f58d2b9ce93ff1ec761b3122057516ea458eec82b0a239a057ec5. 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/DEB790301948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba9e4eafa9ab82812d0ad2469ba1e7b3b731d77e4b4f2f25e175c06e525712d. 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/CH0040601200.
TOTÄMÄSS – Ein schweizerdeutsches Requiem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c8348c5182c81c7045b6b28568864d692e2e22aa6dcfe387ebe0bc4d4d8f9. 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/CHF062410204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb851bae201840235bc623ae0d52eef45eea49d94379a570f72e8d87393d5325e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CHF062410131.