Carl Heinrich Graun (7 May 1704 – 8 August 1759) was a German composer and tenor. Along with Johann Adolph Hasse, he is considered to be the most important German composer of Italian opera of his time
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 0x6625bfac8064b6a050a95560edcd0b210511f9ed3f08099e550b374f874acfa3. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21002dfc-7710-460f-936d-f914cf75c1de.json and https://artists.proofprofile.net/proofs/artist/21002dfc-7710-460f-936d-f914cf75c1de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flute Concerto No. 3 in C Major: III. Allegro assai
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 0x93e289ee60e4ada6fa865124f3a8a056f64aaaba6a98508de86d684692b39b8f. 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/USB8U1013089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959520325adee916099de5c3a8cb6ad704df9bf5f643769753ead61b8dc53d5b. 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/DEB111501517.
Der stille Kurfürst - Werke für Cembalo-Duo
Les 3 Contre-ténors: Le concours de virtuosité des castrats
Artaserse, Act I Scene 15: Aria. Vo solcando un mar crudele (Arbace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7f849535690e3473cc6dfe325ecb56624465468dde9a0d27239441f2683a5. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12124361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4e0269333a54a783ee18b988e49c622b8b966ff1a74e1df8e9137e19d808fd. 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/GBBBA0941330.
Stabat Mater, P. 77: 1. Stabat Mater dolorosa
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22b3fc2724dd97ebd9f5815a34377e273ee2a7b9f454ad74abb8819267a5e01. 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/GBBBC2000232.
Sedecia, Rè di Gerusalemme: Caldo sangue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78ea862076756f818e571917a04f8176cbb50104385a90ef8bec294736282c0. 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/GBBBA0540760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcdcf3a239bac221ab3645b484964b33ffff2efadffe9751726d0c01eab1992. 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/GBBBA0941340.
Il nascimento dell’Aurora: Aure andate e baciate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d298dd261859a55dbbeaf4d88e0cd49ee12d2ce9043c860f1ef39b110d383a. 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/GBF071700220.
Il trionfo dell'Innocenza: Vanne pentita a piangere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7e99594c5d1cf41b849e7f9812362216ae4402728844b8d65dfd86620e7b7e. 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/GBBBA0540740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40896e5f0a01904987c6cc6c6d42330bda825cd705e7c0090def05429d2fde19. 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/GBBBA0941220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937f24b3698f13961dd434a9c5fe6749b6f837478ec0688621910054a363442c. 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/GBBBA0941230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8612fdc0bf41b1458b8bb7367f7bff8ac832a46bcd5ee4703abf6c729c58274. 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/GBBBA0941350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230efedc91dc3e872e0831cdc98012c420dfbc1e27c00252321198414f17beaa. 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/GBBBA0941270.
La Morte d'Abel: Quel buon pastor son io
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcde409387df68890bcc59922ab11bdbf37d09d77d6b9d7ab23be0965581957. 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/GBBBA0941320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a354a552c820496c0e06e236e40f298bac95ceccfd33a1737e9109a34d158. 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/SEAEU2461020.
Languet anima mea BWV deest 1006: V. Alleluja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255729e5d0ed9bfd83b9dc62a285bfe10d6a477db3de0ceeaf7db2543283e7ce. 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/SEAEU2461050.
Der Herr ist König, TWV 8:6: II. No. 5, Chorus: Die Töchter Zion sind fröhlich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90393443b3c09d8eac9f68465ba8de0344099c9ef64a52b3861e2bdfa2ba8323. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:55Z), 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/SEAEU2461070.
Jauchzet dem Herrn alle Welt, BWV Anh. 160: I. No. 1, Chorus: Jauchzet dem Herrn, alle Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805b778eb1ec9cc6886b817f5ecd7854debe02df95b8b25ddb199601d5752fc7. 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/SEAEU2461080.
Cleopatra e Cesare, WV B:I:7: Tra le procelle assorto (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71869c7c3769bfb392467dc215dfdb4e7903389ac1254d39a0caa6a5bcd9055b. 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/DEE861701229.
King Arthur: Act III, scene 2: Cold Song. Genius : "What Power art thou"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff61e29053a083a824282c24231f5ca9a9507003bb38d1d4921614d9cf38927. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ147801071.
Griselda: Act II, scene 1: Griselda : "Mi rivedi, o selva ombrosa"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426f176657b253e86ad3d5364d9caa268ea81a5f46def249f393179f9d18a4a9. 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/FRZ140230011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8389910f8cf0bfb4849674f36fd25434ac15b408614f3f963715dfbbde48af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA371018266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46cf85952ffed5647403ce3f162bba45a8d987dc68adfaf8fb3f4fbfda937d7. 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/USA371018275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ba9c285e9c4b6faaa2ec3589ccc16faf398b3d351a45ac166487a2af42d721. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA371018277.
Frohlocke nun. Berliner Weihnachtsmusiken zwischen Barock und Romantik
Bach, Graun, Telemann & Altnikol: Passions-Pasticcio
Graun: Iphigenia in Aulis, GraunWV B:I:2
Handel: Alcina, HWV 34, Act 2, Scene 3: Recitativo. "Chi scopre al mio pensiero" - Aria. "Mi lusinga il dolce affetto" (Ruggiero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9e3331718f2b52bc88e0e3e0973e5396fbc69763c81a853a438224d58c3cf9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBAYC0701980.
Der Tod Jesu, Pt. 1: Chorus: Du, dessen Augen flossen (Chorus)
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Der Tod Jesu, Pt. 1: Chorus: Sein Odem ist schwach (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0d01d0ea340395418a77fd91df690fc14907d766252c7a66b4c288a6a36026. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEU921401702.
Graun: Te Deum & 3 Motets in Vierstimmige Motetten und Arien
Graun: Harpsichord Concerto in D Major: III. Vivace
Graun: Montezuma – Excerpts (Opera Gala – Volume 6)
The Early Horn: Telemann, Graun, Haydn & Mozart
Graun, J.G. / Graun, C.H.: Chamber Music for Winds
Carl Heinrich Graun: The Death of Jesus (Passon Oratorio 1755)
Adriano in Siria, GraunWV B:I:12/Ouverture/I. Allegro
Adriano in Siria, GraunWV B:I:12: Ouverture: I. Allegro
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Graun: L'Orfeo, GraunWV B.I.25: Aria. D’ogni aura al mormorar (Arr. for Alto Recorder in G by Isaac Makhdoomi)
L'Orfeo, GraunWV B.I.25: Aria. D’ogni aura al mormorar (Arr. for Alto Recorder in G by Isaac Makhdoomi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abd6545bcb1fb6ab6b6e60a6d7293f3e1c0fb3375ffa4d8843c4251bd1f9d33. 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/CHE272502991.
Auf, frohe Christen, singt freudige Lieder
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Berlin Cello Sonatas by Abel, Bach, Benda & Graun
Sonata for violoncello and basso continuo in G Major, WKO 147: III. Rondeau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa039540e610c7fbfcbfd8b2e89909114d5df9f6995925f500d55c55d397f3132. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEE021400603.
Cleopatra e Cesare (Act 1): Tra le procelle assorto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6953e1e0a39f60c498898d6b68077fcf85666f49efd7bea5f55c4213627dcea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DES382163000.
Giulio Cesare (Act 2): Che sento? oh Dio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48af1ac88b5798dd0cc8185b59070262db86c783aa198da04cab803246b1c7c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:38:35Z), 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/DES382163001.
Giulio Cesare (Act 2): Se pietà di me non senti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89812f6f0f28eaad6a49c1042e5521fc6578270d86ffa33bc5bccaaf448a9ebc. 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/DES382163002.
Agrippina (Act 1): L'alma mia fra le tempeste
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb85ce972dd4cb7c4f54e7b276042fa98b2865097535667f9d554a05044d6f1. 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/DES382163004.
Rodelinda, regina de' Longobardi (Act 2): Ritorna, oh caro e dolce mio tesoro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f2f746f8cee64cf2cd3cec144e6b8062fa6496a80f2243a8519617e5ceb352. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:19:19Z), 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/DES382163006.
Rodelinda, regina de' Langobardi (Act 1): L'empio rigor del fato
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eaeae3eadf8d0ce95d0ef593eb2f860c6ab283ae0870a40be4c1e34671810f. 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/DES382163008.
L'isola d'Alcina (Act 3): Mi restano le lagrime
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