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 0x1ea6a1909bfe96047028873b90cfea91a10a9c24a41423ac4dad46814a78f654. 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/5f2c5ccd-ff83-4ef2-aeac-9e23bb73e3be.json and https://artists.proofprofile.net/proofs/artist/5f2c5ccd-ff83-4ef2-aeac-9e23bb73e3be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Handel / Orch. Hale: Keyboard Suite No. 4 in D Minor, HWV 437: III. Sarabande
{"copyright_id":"0x439d04fb7e3eedc6ccb88ce840243d20ef5d81905cbcfc48dc1ac9e48bba6944","isrc":"GBAYC0201575","name":"Handel / Orch. Hale: Keyboard Suite No. 4 in D Minor, HWV 437: III. Sarabande","registered_at":"2026-06-01T08:43:05Z","spotify_id":"1upQiytDIEZfl9ItruoXuC","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439d04fb7e3eedc6ccb88ce840243d20ef5d81905cbcfc48dc1ac9e48bba6944. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1upQiytDIEZfl9ItruoXuC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1upQiytDIEZfl9ItruoXuC.
Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: I. Overture - Allegro ma non troppo
{"copyright_id":"0x16847e61767c41f2248756dc608fc7505a176fc4590f19a3b11cbe70d519663e","isrc":"GBAYC6800296","name":"Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: I. Overture - Allegro ma non troppo","registered_at":"2026-06-08T18:18:02Z","spotify_id":"3M1nb0OexBpzwcm0vY2Ea7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16847e61767c41f2248756dc608fc7505a176fc4590f19a3b11cbe70d519663e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3M1nb0OexBpzwcm0vY2Ea7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3M1nb0OexBpzwcm0vY2Ea7.
Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: II. Allegro
{"copyright_id":"0x376aeac79a4275b97a21a48f82ada3994584dd4892b74bb9ac72cff9f2d429c8","isrc":"GBAYC6800297","name":"Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: II. Allegro","registered_at":"2026-06-08T18:20:22Z","spotify_id":"3yW1jxepmMeDHomctSWFlu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376aeac79a4275b97a21a48f82ada3994584dd4892b74bb9ac72cff9f2d429c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3yW1jxepmMeDHomctSWFlu.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3yW1jxepmMeDHomctSWFlu.
Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: III. Largo
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fb8d16b5ae90cca61ed1b26424dc4f26e19f6b1c2571f2e6e9ffd06a68c63f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6ETpiY7Zx2Rlvn2xBUJLKy.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6ETpiY7Zx2Rlvn2xBUJLKy.
Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: IV. A tempo ordinario - Alla breve. Moderato
{"copyright_id":"0x4a4027bc2f737103a687988cbb076ea506efba48f1f62e2938882715cc1743e7","isrc":"GBAYC6800299","name":"Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: IV. A tempo ordinario - Alla breve. Moderato","registered_at":"2026-06-10T01:38:55Z","spotify_id":"4AsqjeI5Nb94urCqPolb39","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4027bc2f737103a687988cbb076ea506efba48f1f62e2938882715cc1743e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AsqjeI5Nb94urCqPolb39.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4AsqjeI5Nb94urCqPolb39.
Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: V. Menuet. Allegro
{"copyright_id":"0x8eec93a2c5855c3582c65e78eb0d6da6b9211b9f62312b3da8738c6b66e3a2bd","isrc":"GBAYC6800300","name":"Handel: Concerto a due cori No. 1 in B-Flat Major, HWV 332: V. Menuet. Allegro","registered_at":"2026-06-10T01:49:51Z","spotify_id":"1uqq0icIDl4Ieo2BFf5PVh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec93a2c5855c3582c65e78eb0d6da6b9211b9f62312b3da8738c6b66e3a2bd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1uqq0icIDl4Ieo2BFf5PVh.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1uqq0icIDl4Ieo2BFf5PVh.
Handel: Organ Concerto in F Major, Op. 4 No. 4, HWV 292: I. Allegro
{"copyright_id":"0xb6b7a11e3a6f68144dad0cb01e7cf9bc9b7f2f4f2a4f84e266b0e2f3c88b645a","isrc":"GBAYC9801887","name":"Handel: Organ Concerto in F Major, Op. 4 No. 4, HWV 292: I. Allegro","registered_at":"2026-06-10T14:01:40Z","spotify_id":"5eH5PQqT0fvmGlzTPnOP8A","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b7a11e3a6f68144dad0cb01e7cf9bc9b7f2f4f2a4f84e266b0e2f3c88b645a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5eH5PQqT0fvmGlzTPnOP8A.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5eH5PQqT0fvmGlzTPnOP8A.
Handel: Organ Concerto in F Major, Op. 4 No. 4, HWV 292: II. Andante
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5369d832b1f9c9a1dc96cd418335920153136fb122d626fb23d0b78f565d2e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0wrTM9VqRErMe8jv0Clhtq.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0wrTM9VqRErMe8jv0Clhtq.
Handel: Organ Concerto in F Major, Op. 4 No. 4, HWV 292: III. Adagio
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87aed58473b486a8943fb2b61a4ebf009c67af4a20fc6c01eaed929274dc2a3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Tw4ZrHlISfZ0755xab665.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6Tw4ZrHlISfZ0755xab665.
Handel: Organ Concerto in F Major, Op. 4 No. 4, HWV 292: IV. Allegro
{"copyright_id":"0xfad714c29e6890400adb8241e1da821a1fcee7026fc10b7cb3ba5cb594b7df3f","isrc":"GBAYC9801890","name":"Handel: Organ Concerto in F Major, Op. 4 No. 4, HWV 292: IV. Allegro","registered_at":"2026-06-18T11:23:08Z","spotify_id":"0DxD0eu7Sk3MsOXYAqjuF7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad714c29e6890400adb8241e1da821a1fcee7026fc10b7cb3ba5cb594b7df3f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0DxD0eu7Sk3MsOXYAqjuF7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0DxD0eu7Sk3MsOXYAqjuF7.
Handel: Violin Concerto in B-Flat Major, HWV 288: I. Andante
{"copyright_id":"0x0617607165c6f485a7bc5a3a96fc9bdde2c96a9b07704c82d794231525269b86","isrc":"GBAYC9801967","name":"Handel: Violin Concerto in B-Flat Major, HWV 288: I. Andante","registered_at":"2026-06-17T20:50:26Z","spotify_id":"31O6QUbjW0FrDoVj46ypxp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617607165c6f485a7bc5a3a96fc9bdde2c96a9b07704c82d794231525269b86. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/31O6QUbjW0FrDoVj46ypxp.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/31O6QUbjW0FrDoVj46ypxp.
Handel: Violin Concerto in B-Flat Major, HWV 288: II. Adagio
{"copyright_id":"0x07fe69f38ebd30ba984cebf9d67bd4525a18dc92f19a0cf91fa3b3b901f625d1","isrc":"GBAYC9801968","name":"Handel: Violin Concerto in B-Flat Major, HWV 288: II. Adagio","registered_at":"2026-06-17T20:49:35Z","spotify_id":"6rj84J22icimG7jtDu5V3s","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fe69f38ebd30ba984cebf9d67bd4525a18dc92f19a0cf91fa3b3b901f625d1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6rj84J22icimG7jtDu5V3s.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6rj84J22icimG7jtDu5V3s.
Handel: Violin Concerto in B-Flat Major, HWV 288: III. Allegro
{"copyright_id":"0xbf90ae99f2a67fdbac283fc821f0510d08d428114604433b9d79bad4fc45a74e","isrc":"GBAYC9801969","name":"Handel: Violin Concerto in B-Flat Major, HWV 288: III. Allegro","registered_at":"2026-06-17T20:50:05Z","spotify_id":"76aIBqoVUKpbxyvAxeOh0M","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf90ae99f2a67fdbac283fc821f0510d08d428114604433b9d79bad4fc45a74e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/76aIBqoVUKpbxyvAxeOh0M.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/76aIBqoVUKpbxyvAxeOh0M.
Handel: An Occasional Oratorio, HWV 62, Marches: Atalanta - Joshua
{"copyright_id":"0x13d8c8f571c25682ceedfec0bb8a1097ca18425640d2067ae89fce9920eeaa5f","isrc":"GBAYC9801970","name":"Handel: An Occasional Oratorio, HWV 62, Marches: Atalanta - Joshua","registered_at":"2026-06-17T20:50:05Z","spotify_id":"6Cq4AXfr8Xwq1VTjIvtwa8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d8c8f571c25682ceedfec0bb8a1097ca18425640d2067ae89fce9920eeaa5f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6Cq4AXfr8Xwq1VTjIvtwa8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6Cq4AXfr8Xwq1VTjIvtwa8.
Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: I. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baf0081d671f5b3c3b301d46b6b0abef6cf39b60ceb6bfa099bdc9d1a140ca1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/467RnMtzCylrNKWgpDAFfC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/467RnMtzCylrNKWgpDAFfC.
Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: II. Adagio e fuga
{"copyright_id":"0x06c8120d1ed129288816c4018c567fa5348a1ea4e446cbcac46e6e728833784f","isrc":"GBAYC9801924","name":"Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: II. Adagio e fuga","registered_at":"2026-06-19T08:18:32Z","spotify_id":"3Ji4Z7oZlyoBE5SvRNLQOE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c8120d1ed129288816c4018c567fa5348a1ea4e446cbcac46e6e728833784f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Ji4Z7oZlyoBE5SvRNLQOE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3Ji4Z7oZlyoBE5SvRNLQOE.
Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: III. Spiritoso
{"copyright_id":"0xaf9406a7ba58c322c25748fb247a0156a2f763e04e31de87bbfb6b6bc61449d3","isrc":"GBAYC9801925","name":"Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: III. Spiritoso","registered_at":"2026-06-19T08:15:44Z","spotify_id":"3wBWC67Bee1MlkT6nEq83z","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9406a7ba58c322c25748fb247a0156a2f763e04e31de87bbfb6b6bc61449d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3wBWC67Bee1MlkT6nEq83z.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3wBWC67Bee1MlkT6nEq83z.
Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: IV. Menuet I & II
{"copyright_id":"0xd1332920b6054dc54838ddb654958f4296baa87fcd806689fbb8ec2c862290a8","isrc":"GBAYC9801926","name":"Handel: Organ Concerto in B-Flat Major, Op. 7 No. 3, HWV 308: IV. Menuet I & II","registered_at":"2026-06-20T03:38:34Z","spotify_id":"12MxIbYGPecDaQfPjPfrgg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1332920b6054dc54838ddb654958f4296baa87fcd806689fbb8ec2c862290a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/12MxIbYGPecDaQfPjPfrgg.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/12MxIbYGPecDaQfPjPfrgg.
Handel / Arr. Mackerras & Rothwell: Oboe Concerto No. 2a in B-Flat Major, HWV 301: I. Adagio - II. Allegro
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf701c4041afaaee5298f6b7ee0542dbb70e936cc58faf3fb931369428aeeadb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5vvDjyGjAfl2GbwrdRXuDc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5vvDjyGjAfl2GbwrdRXuDc.
Handel / Arr. Mackerras & Rothwell: Oboe Concerto No. 2a in B-Flat Major, HWV 301: III. Siciliano
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68da3ff8570627d1c1d4a75f55af5e8a739edacc6dbd94194e4f9054c645d541. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1yLDz9nqKOlqfeTsNxXQ5f.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yLDz9nqKOlqfeTsNxXQ5f.
Handel / Arr. Mackerras & Rothwell: Oboe Concerto No. 2a in B-Flat Major, HWV 301: IV. Vivace
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Handel / Arr. Hartmann: Saul, HWV 53, Act 3, Scene 5: Dead March
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Handel: Coronation Anthem No. 1, HWV 258 "Zadok the Priest"
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Handel: Music for the Royal Fireworks, HWV 351: IV. La réjouissance
Martin: Polyptyque for Violin and 2 Small String Orchestras: I. Image des Rameaux
Martin: Orchestral, Choral & Vocal Works.