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 0xfbf5c6b6ac0b92da3fc5c3b35105dc4c4f73f8b195444c06b72518ccf578d30b. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a2bcd3a-f87f-44d4-997b-2df8de8379aa.json and https://artists.proofprofile.net/proofs/artist/7a2bcd3a-f87f-44d4-997b-2df8de8379aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ich hatte viel Bekümmernis, BWV 21: No. 1, Sinfonia
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 0x5c6bed704bd8da6bdbda79941bf8db7ade85bb86ee2f9962ce8d1bd6e821488d. 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/DEAD62102401.
Beethoven: Complete Symphonies; Violin Concerto; Prometheus
Symphony No. 2 in D, Op. 36: 4. Allegro molto - Live In Utrecht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcf200da0f7c95e873e4dec09a6664700e63cbe1091bff003066ad3cbd2cfb. 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/NLA508801308.
Symphony No. 2 in D, Op. 36: 2. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656521f896d0f6541f3e8fc70bc8a647ca00420508d4adace467f73be926f7c1. 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/NLA508801420.
Strauss & Wagner: Vocal and Orchestral Works
Symphony No. 2 in C Minor Resurrection: II. Andante Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35a0fa3b39d2be284f1c7b9da101855f56ec3d6921f558bc5d698dafea03af1. 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/NLY332400474.
Symphony No. 2 in C Minor Resurrection: III. In ruhig fliessender Bewegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474041785ce3f8c11eb614f5cdd773f02a7d2f2a19020bad6786abd2e1e12bc. 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/NLY332400475.
Symphony No. 2 in C Minor Resurrection: IV. Urlicht. Sehr feierlich, aber Schlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0dbc81bc68253732ed863e8348b329bdab4fbfcaee172be586394541b454ae. 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/NLY332400476.
Symphony No. 2 in C Minor Resurrection: V. Finale. In Tempo des Scherzos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbc3d8115c2496df46f9ba8fe1e0059e4568835e2a6710ffd2b777b3d655e9f. 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/NLY332400477.
Symphony No. 2 "Resurrection": III. Scherzo. In ruhig fl iessender Bewegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c61b585b966c73a17f96cc26115a7a4ce90b87928d541dfb7e48a10a59921a2. 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/GBHZU1004403.
Symphony No. 2 "Resurrection": IV. 'Urlicht'. Sehr feierlich, aber schlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb482fe2f749aa9b009f4386a60831b4dc28e3b0db114e31c675abfcc733752. 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/GBHZU1004404.
Symphony No. 2 "Resurrection": V. 'Aufersteh'n.' Langsam Misterioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b03b557503a4ac99151878d5f49b7818b6d61a1375aa2758fa2ee999707a5f. 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/GBHZU1004406.
Symphony No. 2 "Resurrection": V. "O Glaube, mein Herz" Etwas bewegter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0b9b78411a35af7fec4b2adafd7f862f1b9a6c8e575ddab283f5f1151b7d5. 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/GBHZU1004407.
Martin: Die Weise von Liebe und Tod des Cornets Christoph Rilke
Symphony No. 2 in C minor - "Resurrection": 3. Scherzo: In ruhig fliessender Bewegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb82175d8c2ecbe01020ff6c3bb15cdcc30bbd2d2c132f269717afae4f23b83. 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/NLA509301103.
Symphony No. 2 in C minor - "Resurrection": 5c. Sehr langsam und gedehnt -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a94a0ce91a4b4c4922cd3337f4f4cd8fab4b35979145240724ea7edfcd0f8b. 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/NLA509301107.
Symphony No. 3: IV. Sehr langsam. Misterioso. O Mensch! Gib acht!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe41b88b07b9a5f8bd9f27d09ce6f4da6da354e4c75a19cca16736bb31d00be. 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/NLA509001304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d4fa245babb22f1f1b5d6685dcae2f9d3414508262f047d3c0a4c6e7ac1bdb. 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/GBF078910461.
Rhapsody for Alto, Chorus, and Orchestra, Op. 53
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Mahler: Symphony No. 6 / Zemlinsky: Six Songs
Folk Songs: 1. Black is the colour (USA)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d2aac4e01f801e182a5103ae16deca432d32f66a0e4b0a603ea324df9522da. 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/GBF078940803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce80a86c1763e7afab506e27be98be789bc6cc78158dc15593c729801e401f0f. 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/GBF078940811.
Mozart - The 50 Best Classical Masterpieces
Handel: Ode for St. Cecilia's Day, HWV 76: Air. "What Passion Cannot Music Raise and Quell"
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The 50 Absolute Essentials of Classical Music
Chorszenen und Konzertchöre in Rundfunkaufnahmen ab 1938
Die Meistersinger von Nürnberg, WWV 96: Silentium! Silentium!
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Prokofiev: Alexander Nevsky; The Stone Flower; Lieutenant Kijé etc.
Lieutenant Kijé, Symphonic Suite, Op. 60: 4. Troïka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6319a2a8debd467f54351eecd00d3a7b7f2068ef8f10021db44abbd8fdc01b. 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/GBF079010404.
Carlo Maria Giulini - The Complete Sony Recordings
Handel: Messiah, HWV 56, Pt. 2, Scene 7: Chorus. "Hallelujah"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58aeeb5e8717bf343089cafd46bd313399c81ecc69407b95972b94b7a5eae9. 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/DEA808203745.
Handel: Messiah, HWV 56, Pt. 1, Scene 1: Chorus. "And the Glory, the Glory of the Lord"
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Musica Sacra Vol. 5 - Petite Messe Solennelle
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Die Zauberflöte, K. 620, Act II: Dialogue. Eine schreckliche Nacht
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Die Zauberflöte, K. 620, Act I: No. 1, Zu Hilfe! Zu Hilfe! – Dialogue. Wo bin ich?
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Die Zauberflöte, K. 620, Act I: No. 2, Der Vogelfänger bin ich ja – Dialogue. He da!
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Die Zauberflöte, K. 620, Act I: No. 3, Dies Bildnis ist bezaubernd schön – Dialogue. Rüste dich mit Mut
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Die Zauberflöte, K. 620, Act I: No. 4, O zittre nicht, mein lieber Sohn!
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Die Zauberflöte, K. 620, Act II: No. 14, Der Hölle Rache "Queen of the Night Aria"
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Die Zauberflöte, K. 620, Act I: No. 5, Hm! hm! hm! hm! – Dialogue. Ha, ha, ha!
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Die Zauberflöte, K. 620, Act II: No. 15, In diesen heil'gen Hallen – Dialogue. Hier seid ihr euch beide allein überlassen
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Die Zauberflöte, K. 620, Act I: No. 7, Duet. Bei Männern, welche Liebe fühlen
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Die Zauberflöte, K. 620, Act II: No. 17, Ach, ich fühl's – Dialogue. Nicht wahr, Tamino
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Die Zauberflöte, K. 620, Act II: No. 18, O Isis und Osiris, welche Wonne – Dialogue. Prinz, dein betragen
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Die Zauberflöte, K. 620, Act I: No. 8, Finale: b. Die Weisheitslehre dieser Knaben
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Die Zauberflöte, K. 620, Act II: No. 19, Soll ich dich, Teurer, nicht mehr sehn? – Dialogue. Tamino! Tamino!
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Die Zauberflöte, K. 620, Act I: No. 8, Finale: g. Es lebe Sarastro! Sarastro lebe!
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Die Zauberflöte, K. 620, Act II: No. 21, Finale: c. Chorale Prelude. Der, welcher wandelt diese Straße
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Die Zauberflöte, K. 620, Act II: No. 21, Finale: d. Tamino mein, o welch ein Glück
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Die Zauberflöte, K. 620, Act II: No. 10, O Isis und Osiris
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Die Zauberflöte, K. 620, Act II: No. 21, Finale: g. Duet. Pa-Pa-Pa-Pa-Pa-Pa-Papagena!
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Die Zauberflöte, K. 620, Act II: No. 21, Finale: h. Nur stille, stille
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Brahms: Symphony No.4; Alto Rhapsody; Nanie
Symphony No. 4 in E minor, Op. 98: 1. Allegro non troppo
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Symphony No. 2 in C Minor, "Resurrection": IV. Urlicht: Sehr feierlich, aber schlicht
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Clarinet Concerto in A Major, K. 622: II. Adagio
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Piano Sonata No. 16 in C Major, K. 545 "Sonata facile": I. Allegro
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Piano Concerto No. 21 in C Major, K. 467 "Elvira Madigan": II. Andante
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Serenade No. 13 in G Major, K. 525 "Eine kleine Nachtmusik": II. Romanze. Andante
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Le nozze di Figaro, K. 492: Che soave zeffiretto
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Piano Sonata No. 11 in A Major, K. 331: III. Rondo alla turca. Allegretto
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Symphony No. 3 in F Major, Op. 90: 1. Allegro con brio - Un poco sostenuto - Tempo I
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Symphony No. 3 in F Major, Op. 90: 2. Andante
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Symphony No. 3 in F Major, Op. 90: 3. Poco allegretto
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Mendelssohn: Elias, Op. 70, MWV A25, Pt. 2: No. 28, Terzett. "Hebe deine Augen auf zu den Bergen"
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