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 0x46ae838590021deaeb24a6fde804fc8c191902513521d601ce6d7ebaddd02bf5. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/239fbe36-5007-4388-bbc3-6ae81a2373c1.json and https://artists.proofprofile.net/proofs/artist/239fbe36-5007-4388-bbc3-6ae81a2373c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flute Concerto No. 1 in G, K.313: 2. Adagio non troppo
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 0x9f86e8da9a2721c25950612ddaf21d32b45c39d492eaaad8f2b2295dca7f55e4. 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/NLA507528202.
Flute Quartet in D, K.285: 2. Adagio - (attacca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2677c2bf55c21439770ab60778fa0f1beb9b383efb66cdcb7232cee7d406c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLA506900191.
Flute Concerto No. 1 in G, K.313: 3. Rondo (Tempo di Menuetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce814a8c4371d4f0c0ca983ddd4a052599c5ca9107d7138aff379d0d5b261e75. 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/NLA507528203.
Flute Concerto No.2 in D, K.314: 1. Allegro aperto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0eeface244403a889b30ad93929658f92eefecf100c267b79ea2e73c8bc4dd. 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/NLA507528204.
Flute Quartet in A, K.298: 1. Thema (Andante) con variazioni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7914ecff2c464b35e31d0e7baa881391bc9b3705f1cc45d1ac2bc012924d06f5. 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/NLA506900193.
Flute Concerto No.2 in D, K.314: 3. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd028bdc9918cad5a97f7410f045c5603fac220882c5c8d30ed0760acbcf09145. 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/NLA507528206.
Flute Quartet in A, K.298: 3. Rondeau (Allegretto grazioso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81cc4acef2726f107349f037a3d1310637c6c20b4c5bd91adbaaa5b4b86750a. 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/NLA506900195.
Andante for Flute and Orchestra in C, K.315
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ba2430baaa2fc693b5ae53d9ffc7229cb473ab7e9bc58deb89830d1fceab6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLA507528207.
Concerto for Flute, Harp, and Orchestra in C, K.299: 3. Rondo (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2574f352fb3bd940d45a90884217a63ebdf7905d7fe8bf8c7686c4bd206190. 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/NLA506400185.
Concerto for Flute, Harp, and Orchestra in C, K.299: 1. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017f51362de533767679bf88a0eb2ddbaabc188d207af501be686458347e4717. 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/NLA506400183.
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
Concerto for Flute, Harp, and Orchestra in C, K.299: 2. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c96e45d0e9f5b25964763e4cc90708765523c2a9f61e11d19439cda4c3ceca. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/NLA506400184.
Mozart: Flute Concertos; Symphonies 39, 40, 25, 29, 32
Mozart: Quatuors pour flûte (Mono Version)
Bach: Suites orchestrales Nos. 1 & 2 (Mono Version)
Bach: The Four Orchestral Suites by Eduard van Beinum (2022 Remastered, Amsterdam 1956)
Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758190d8704809b954f52d4983809641525d9579e4d845a62884812116b4a90b. 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/USA560794419.
Flute Concerto No. 2 in D Major, K. 314: I. Allegro aperto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584ce46f6a6880209200ece023cd2db28a0404140a4426aed27f59f500369ca8. 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/USA560794421.
Cassation in B-Flat Major, K. 99: VI. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1dd6fb9de503502a9fd447a4df33b3c2a144392af9b4219f997ad764b612b9. 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/USA560794428.
Requiem in D Minor, K 626: III. Sequentia: Dies irae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84013d01604ebce6a6651b61e1ddb63a0bf60311acad4ba93e2e3a0f2b80fa43. 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/USA560794432.
Violin Concerto No. 3 in G Major, K. 216: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84bac7b06f2a33eee69abe0b5b782c7e237566f6fcfce38ade5b6673a42d8ac. 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/USA560794442.
Symphony No. 35 in D Major, K. 385 "Haffner": I. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8c4c4ada1dc74c2c2dcaf09ff3f7720414c604b597d5ed65a60ea2134a46f9. 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/USA560794445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdc3229aed1be9fdd6c56f321947eafbdd3039ec8851eb3d44467e5a630696b. 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/USA560794451.
Don Giovanni, K. 527, Act I: "Ho capito, signor si"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc0b7ccc6cf40aadaec90045808fb4ee919e32efa4517784f37727d65c9302. 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/USA560794457.
Eduard van Beinum - Philips Recordings 1954-1958
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab169faf34a361b9cb885b42bffd195424ddd39b16b381c79c8d33ed0f814b9d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLA505800178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f52bd0742603c342c09419ddb6fb810b09e641b1d6afa2665483eb82dbd3fb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLA505800187.
Ravel: Daphnis et Chloé Suites Nos. 1 & 2; Ma mère l'oye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558e5d7a58c105c256b53557ac4e4c550c9d51a0669bc6086e91581453c13e7f. 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/NLA507600122.
Le tombeau de Couperin, M. 68: III. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ee9493fc3760e624a4d9a990583269b5ee4b23df670137ad33183d4a64122. 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/NLA507500197.
Ma mère l'oye, M. 62: Apothéose. Le jardin féerique. Lent et grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e02e888fa28036f0ace8c3630f7850a48bef53408717179ee01ac17dbb55cf. 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/NLA507100222.
Daphnis et Chloé, Suite No. 2, M. 57b: II. Pantomime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4641e4674c9a943ceffe1028dfed81e0eb749c117b2a4ba03e110d70ad7706f0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLA507100210.
Concertino for Harp and Chamber Orchestra, Op. 93: 2. Andante (Quasi recitativo)
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Ravel: Orchestral Music - Boléro/Ma Mère l'Oye etc.
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Miroirs, M. 43: IV. Alborada del gracioso, M. 43c
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Ma mère l'oye, M. 62: Les entretiens de la belle et de la bête. Mouvement de Valse. Modéré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34b9c6c75aba64b4b0997316394862ff67e431d2e23b5214d8a6675359d45a3. 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/NLA507100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e02e888fa28036f0ace8c3630f7850a48bef53408717179ee01ac17dbb55cf. 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/NLA507100222.
Ravel: Boléro; Rapsodie espagnole; Daphnis et Chloé Suite No. 2; Pavane pour une infante défunte
Classical Digitally Remastered: Wolfgang Amadeus Mozart
Bach, J.S.: St. Matthew Passion (Mengelberg) (1939)
Wolfgang Amadeus Mozart : Classical Favorites
Mozart Edition, Vol. 3: Instrument Concertos
Klemperer Rarities: Amsterdam, Vol. 12 (1950-1956)