1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x52ebb4762a6180c1f032d2ca53425fa78f19d9f36bffa5bd066ad6729dc3cadb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6da70da9-1d78-45ee-a4dd-3063a6e79768.json and https://artists.proofprofile.net/proofs/artist/6da70da9-1d78-45ee-a4dd-3063a6e79768.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vom Himmel hoch: Vom Himmel hoch, da komm ich her
Christmas Oratorio, BWV 248, Part I: Jauchzet, frohlocket, auf, preiset die Tage
St. Matthew Passion, BWV 244, Part I: Kommt, ihr Tochter, helft mir klagen
Zadok the Priest, HWV 258: III. God save the King
St. Luke Passion, Pt. 1: Part I: O Crux ave (Hymn 'Vexilla Regis prodeunt')
St. Luke Passion, Pt. 2: Part II: In pulverem mortis … / In te, Domine, speravi (Psalm 30)
Gloria in D Major, RV 589: Gloria in excelsis Deo
Symphony No. 8 in E-Flat Major, "Symphony of a Thousand": Part II. Final Scene from Faust: Alles Vergangliche ist nur ein Gleichnis
Cardinal Stefan Wyszynski University Choir
Magnificat in D Major, BWV 243: Magnificat anima mea
Te Deum, WAB 45: Te Deum laudamus - Te ergo quaesumus
Grande messe des morts, Op. 5, "Requiem": Agnus Dei
Chetham's School of Music Symphonic Brass Ensemble
4 Choral songs, Op. 53: No. 1. There is Sweet Music
The Choir of St. Mary's Episcopal Cathedral
All-night Vigil, Op. 37, "Vespers": Hail, O Virgin Mother (Ave Maria)
Symphony of Psalms: I. Exaudi orationem meam, Domine (Psalm 39, 12-13)
Requiem in D Minor, K. 626: Introit: Requiem aeternam
Requiem in D Minor, K. 626: Sequence: I. Dies irae
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 → block OTSBitcoinBlock must exist at that height 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 0xb4978068ce233771d3c9434f04051a0d488af637730e291272d5b1ea99234838. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1602112.
Missa Papae Marcelli: Masses, Book 2: Missa Papae Marcelli: Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678e3a53a33f3982a7fa3ea27cf4b3b50ef9c615404808b36f849911e39e5756. 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/USB8U1602138.
Fantasia in C Minor, Op. 80, "Choral Fantasy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179be90e9193bbf7a048147ea3ede8bab1a5751795decf64ef5e1c0cebb9631d. 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/USB8U1602114.
Ein deutsches Requiem (A German Requiem), Op. 45: I. Selig sind, die da Leid tragen
Munich University of Music Chamber Choir
Messa da Requiem: Dies irae: Dies irae, dies illa
Berliner Messe (1997 Revised Version): Kyrie
Berliner Messe (1997 Revised Version): Gloria
Mass in B Minor, BWV 232: Kyrie: Kyrie eleison
Berliner Messe (1997 Revised Version): Agnus Dei
Mass in B Minor, BWV 232: Agnus Dei: Dona nobis pacem
Elias, Op. 70, MWV A 25, Pt. 2: Elijah, Op. 70, Part II: Alsdann wird euer Licht hervorbrechen
Vespro della Beata Vergine, "1610 Vespers": Domine ad adiuvandum
The English Cornett and Sackbut Ensemble
Die Schopfung (The Creation), Hob.XXI:2, Part I: Stimmt an die Saiten (Awake the harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d6dd3fc6abe42fb5e8beafc236fe4987cd837ed22afeec954f0b04c014f082. 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/USB8U1602121.
Choir of Gonville & Caius College, Cambridge
Choral Music (Sacred) - Handel, G.F. / Mozart, W.A. / Haydn, F.J. / Beethoven, L. Van / Bach, J.S. / Mendelssohn, Felix / Bruckner, A.
Bringet dem Herrn Ehre seines Namens, BWV 148: Bringet dem Herrn Ehre seines Namens
Vesperae solennes de confessore, K. 339: Laudate Dominum
Deutsche Messe, D. 872: Zum Eingang: Wohin soll ich mich wenden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021b9dd7baec1560b1458ab48d74bef023990ceb19c4d80f76e1bbb8128d7db0. 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/US2TL0932417.
Die Schopfung (The Creation), Hob.XXI:2, Part I: Die Himmel erzahlen die Ehre Gottes (The heavens are telling the glory of God)
Lobe den Herrn, meine Seele, BWV 143: Chorale: Du Friedefurst, Herr Jesu Christ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8282102480e8bef4d0345dc2ac8b090dedbcb6665af00402d6a6a5691ae2768. 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/DEB261201510.
6 Songs, Op. 48: No. 4. Die Ehre Gottes aus der Natur (arr. for male choir)
Carl Maria von Weber Men's Choir, Berlin
Mass in B Minor, BWV 232: Gloria - Et in terra pax
Christmas Oratorio, BWV 248: Ehre sei dir, Gott gesungen
Elijah, Op. 70: Denn er hat seinen Engeln befohlen uber dir
St. Matthew Passion, BWV 244, Part I: Ich will bei meinem Jesu wachen
3 Motets, Op. 39: No. 2. O praise the Lord (Laudate pueri)
Die Schopfung (The Creation), Hob.XXI:2, Part III: Von deiner Gut', o Herr und Gott (By thee with bliss, O bounteous Lord)
Te Deum, WAB 45: Te Deum laudamus - Te ergo
Souvenir de Florence, Op. 70: Herr, hore mein Gebet, Op. 45
Christmas Oratorio, BWV 248: Herr, wenn die stolzen Feinde schnauben
Deutsche Messe, D. 872: Zum Sanctus: Heilig, heilig ist der Herr
3 Motets, Op. 39: No. 1. Hear my prayer, O Lord (Veni, Domine)
War Gott nicht mit uns diese Zeit, BWV 14: War Gott nicht mit uns diese Zeit
Die Schopfung (The Creation), Hob.XXI:2, Part II: In holder Anmut stehn (Most beautiful appear)
Ein deutsches Requiem (A German Requiem), Op. 45: III. Herr, lehre doch mich
St. John Passion, BWV 245, Part II: Mein teurer Heiland - Jesu, der du warest tot
Komm, Jesu, komm, BWV 229: Komm, Jesu, komm
Jesu, meine Freude, BWV 227: Jesu, meine Freude
Preise, Jerusalem, den Herrn, BWV 119: Der Herr hat Guts an uns getan
Ich hatte viel Bekummernis, BWV 21: Sei nun wieder zufrieden, meine Seele
Mass No. 2 in G Major, D. 167: Gloria in excelsis
Bulgarian National Svetoslav Obretenov Choir
Wer weiss, wie nahe mir mein Ende!, BWV 27: Wer weiss, wie nahe mir mein Ende
Die Schopfung (The Creation), Hob.XXI:2, Part III: Singt dem Herren alle Stimmen (Sing the Lord, ye voices all!)
St. Matthew Passion, BWV 244, Part III: Wir setzen uns mit Tranen nieder
Classic Moods - Pergolesi, G.B. / Bach, J.S. / Handel, G.F. / Bach, C.P.E. / Mozart, W.A. / Haydn, F.J. / Donizetti, G. / Mendelssohn, Felix
Ich habe genug, BWV 82: Aria: Ich habe genug
Messiah, HWV 56, Part I: Aria: And He shall feed his flock
Die Auferstehung und Himmelfahrt Jesu, Wq. 240, H. 777, Part I: Duet: Vater deiner schwachen Kinder
St. Matthew Passion, BWV 244, Part I: Aria: Buss und Reu
Requiem in D Minor, K. 626: Sequence No. 4: Recordare, Jesu pie
Die Schopfung (The Creation), Hob.XXI:2: Part I: Nun beut die Flur das frische Grun (With verdure clad the fields appear)
Vom Himmel hoch: Aria: Sei willekomm', du edler Gast
Oratorio de Noel, Op. 12: Air: Domine, ego credidi
Ein deutsches Requiem (A German Requiem), Op. 45: V. Ihr habt nun Traurigkeit
Salve Regina in C Minor: Et Jesum - O clemens, o pia
Mass No. 2 in G Major, D. 167: Agnus Dei
The Creation: No. 18, "In holder Anmut stehn"
A Beginner's Guide to Learn to Love Classical Music
The Creation: No. 19, "Der Herr ist gross"
The Creation: No. 10, Chorus - "Stimmt An Die Saiten“
Classical Masterpieces of the Millennium
Messe solennelle de Sainte-Cécile: Agnus Dei
Frère André, un homme de prière: musique pour la réflexion et la méditation
Concertino for Flute, Viola and Contrabass: I. Allegro moderato
Concertino for Flute, Viola and Contrabass: II. Adagio
Concertino for Flute, Viola and Contrabass: III. Rondo. Allegro moderato
Symphony No. 1. In C Minor, Op. 40: I. Ruhig bewegt - Anfangs etwas gehalten
Symphony No. 1. In C Minor, Op. 40: II. Scherzo. Leicht bewegt, aber nicht zu schnell
Symphony No. 1. In C Minor, Op. 40: III. Sehr langsam und ausdrucksvoll
Symphony No. 1. In C Minor, Op. 40: IV. Finale. Kraftig und entschieden bewegt
Die Ehre Gottes aus der Natur, Op. 48, No. 4, "Die Himmel rühmen des Ewigen Ehre"
Dir, Dir Jehova, will ich singen (Choral)
Symphony No. 9 in D Minor, Op. 125: IV. Finale. Ode an die Freude
Ode an die Freude (und andere berühmte Chöre)