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 0x57c83d39422d54f65411e1db857cabfdcc82bad7a6ade738c8d9e3fa01226983. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8e1deb7-37e8-4bc1-ac88-44cb29e8892a.json and https://artists.proofprofile.net/proofs/artist/e8e1deb7-37e8-4bc1-ac88-44cb29e8892a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ana Belén Y Miguel Rios Cantan A Kurt Weill
Tomás Marco. Llanto por Ignacio Sánchez Mejías
Lalo: Violin Concerto, Fantaisie norvegienne & Symphonie espagnole
Palomo: Cantos del alma & Sinfonia a Granada
Ginastera: Estancia, Variaciones Concertantes & Concierto Para Arpa
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 0x168f899a725f20e5d2acc411406a115d2f69f7f58fcdf8edebdb5f1007d12f31. 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/FRZ140232020.
Estancia, Op. 8a: III. Los peones de hacienda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841b703fd42fa74bcfedc8a1a1ca3a6d39d52de5641e562b3ea7c89eafb4904a. 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/FRZ140232030.
Estancia, Op. 8a: IV. Danza final (Malambo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dc9577a4ce0e4c209883b27269a2f1f9c18abd14768c6ccbf5952a50d9d621. 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/FRZ140232040.
Concierto Para Arpa y Orquesta, Op. 25: I. Allegro giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe63229c133caeaac549a9ccd74889d2c9ddbc4d06ab9ed062d3361aadf4fc5. 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/FRZ140232050.
Variaciones Concertantes, Op. 23: I. Tema per violoncello ed arpa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb616e834e71385f7049dfdcd246f56ba51c7b0bf6381cf023dea47bee829c319. 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/FRZ140232090.
Variaciones Concertantes, Op. 23: III. Variazione giocosa per flauto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079636e739b6de8fe4f8b3ab69fe76a2399432793672356a99274c0d5e822759. 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/FRZ140232110.
Variaciones Concertantes, Op. 23: IV. Variazione in modo di scherzo per clarinetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70c966d6e6975603c1b4e269ba52d69a626863d5d4551e4989b45fd4082e4d7. 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/FRZ140232120.
Variaciones Concertantes, Op. 23: V. Variazione drammatica per viola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e5ae36e25ad9160622f6a56b326160d6e8083a42a5f215e90d973b523ba69f. 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/FRZ140232130.
Variaciones Concertantes, Op. 23: VII. Variazione ritmica per trombe e trombone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8084374658784b0403502d22f65eaa4db0d81551f5bffc9c2aee07acc323157b. 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/FRZ140232150.
Variaciones Concertantes, Op. 23: VIII. Variazione in modi di moto perpetuo per violone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc30f74e2abade4bfc345268ad2bd395f7b1c9ded74dd35758a30d5ba82aff0. 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/FRZ140232160.
Variaciones Concertantes, Op. 23: IX. Variazione pastorale per corno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc01456f2e22d301f914bf8dd015649d0f0aa5fe639f50b0f57c5c380c4d10b. 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/FRZ140232170.
Variaciones Concertantes, Op. 23: XII. Variazione finale in modo di rondo per orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2841c9f0ac356f793a34bcffcd1860f939d48f9a81a031b4131942540addbbf1. 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/FRZ140232200.
Estancia, Op. 8a: I. Los trabajadores agrícolas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320d457e11c7be5c4ae7e11d14349fad85bde4426c735762ca8e085c87ed0588. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRZ140232010.
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
Concierto Para Arpa y Orquesta, Op. 25: II. Molto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1cf5cec18b3080068e2f893aa1789fbf01d44f6e3f52e30005ec0988aee3ed. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FRZ140232060.
Concierto Para Arpa y Orquesta, Op. 25: III. Liberamente capriccioso - Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff648515e14a4d901f7e3ef73eb9c4cfe74615129a33e669a962ebbddb7edf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ140232070.
Variaciones Concertantes, Op. 23: VI. Variazione canonica per oboe e fagotto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fc7471a463873a5a25d0da6d50b7e8f39c1461afb9c945a0648614d1a796e1. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FRZ140232140.
Variaciones Concertantes, Op. 23: X. Interludio per fiati
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7c2b86a1e2266f45feb784d8a492abbad1bb6339b6343a568c6d646c00fe5. 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/FRZ140232180.
Variaciones Concertantes, Op. 23: XI. Ripresa dal tema per contrabasso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb3bff725a5b1ca5754bfb5e41f59b3e9957477d9162f6bace5ae38346a1e6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRZ140232190.
Bizet: L'Arlésienne Suites Nos. 1 & 2; Symphony in C
El Sombrero de tres picos, Primera Suite: III. Fandango (Danza de la Moliniera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2aae298a3bc4b5643ad4ce949d7b147ed8cd726a158f95e817636f3fb4305d. 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/FRZ149747030.
El Sombrero de tres picos, Primera Suite: IV. El Corregidor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc82685fa0c58f64a1a386d6f60ec863a98dd60d06d854e8f0557ca22442900. 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/FRZ149747040.
El Sombrero de tres picos, Segunda Suite: II. Farruca (Danza del Molinero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2dd3d0f6ed45940f4c715b8eb5ea6558fe3738571510722610d00ae7e27572. 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/FRZ149747060.
El Sombrero de tres picos, Segunda Suite: III. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea72c3eed963d1fd45c0f88e4ade7f18d03aff5014103a3ab61100f240bb7c2. 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/FRZ149747070.
El Sombrero de tres picos, Segunda Suite: VII. Danza final
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf879602511244e14da04b2c75b5284716d2f65ed4260b0b59aeeab6a11d7b91. 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/FRZ149747110.
El Sombrero de tres picos, Primera Suite: II. La tarde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b864492ae3ca273d6d86dc0761598e012598eea3708f9bc268b5430e55958fe. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FRZ149747020.
El Sombrero de tres picos, Segunda Suite: I. Seguidillas (Danza de los vecinos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd099cb6b1ea365880169254335a8254d6432cbd5b1058034846fd90cfef0270e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRZ149747050.
El Sombrero de tres picos, Segunda Suite: IV. Las coplas del cuco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cffaa854c1481be01a4d85934a7a83e2ad57f164c97914a2b95f1299833e83. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FRZ149747080.
Marco: Ojos verdes de luna & Concierto del alma (Live)
Turina: Vol. II, Selected Symphonic Pieces
Turina: Vol. I, Selected Symphonic Pieces
El Elefante Infante. Partitura Versión Orquestal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918d0b2c213a89b44e6ff28f356639379242379d6c3bd1091b71f555c3ac1299. 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/QMFMF2328176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e89737289dec2dcfd1f521678f5e50ed38d86e502d96dc05ebe30097247b90. 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/QM4TX2479268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9386ce8139ff607f39c4890a2b1de2b1a771031c13df43c4acd9edd79022a8ac. 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/QM4TX2457996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53db599a7c52ab5b73e49072c0c6d3a347e3e4482802b5bff3a810cfa5adc777. 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/QM4TX2479442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d89ed57f425253043c63eddc09c943aabc3cd68128e64aef5e4bedbdb2cfd03. 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/QM4TX2479503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d547a772b35de03ae09b078ed76200c08b7bba218919b3a9e8de30a39c05cc. 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/FRZ147609070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ddab5ba71dac5755549785610fb33730a1a9cb58a4179cbb96ebe6083d5e3c. 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/FRZ147609080.
Arab-Andalusian music: M'saddar - Sana'a
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c3a63c888f8c0cd7dc6d4f4d652b020dba8af36f515b643b5aa6515869e8e3. 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/FRZ147609100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d3bbcc191d83e0fc06933ae2538f2c86e43f9c281b995a91691a830b5a8d7d. 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/ES5199509130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468251d95420b3b6347cb4e7f03eadb68235d0464ad7e1c17d93698562c8558. 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/ES5199509140.
El Canto espiritual judeoespañol: Dodí yarad leganó
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff946c8fb68a28a4d600c5955bb71c92bdc209971fbded8a876a827b8133c4c4. 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/ES5199815130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18495d8617d9fa658377d8d6e01d3d6d10d2485eafb4322c5a42e4c3be8b6387. 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/FRZ149749080.
Franz Joseph Haydn: Violin and Cello Concertos
Cello Concerto in D Major, Hob. Vllb: 2: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ed3ed5c953433838c423c049d874927df91d0a2cee456a90be74c195219d2b. 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/ES5021600716.
Adagio from Cello Concerto in C Major, Hob. Vllb: 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68d000f0395eee2eefb1eeb6b91d3d7d78229c0a29d9e28b5cdfc2bd5ac00bc. 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/ES5021602347.
Violin Concerto in G Major, Hob. Vlla: 4: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a234258c5de40c166b5b08f714eb491fd3167097b2fafd372c152eeb3646a1b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES5021600707.
Violin Concerto in G Major, Hob. Vlla: 4: II. Adagio.
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Violin Concerto in G Major, Hob. Vlla: 4: III. Finale (Allegro)
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Violin Concerto in C Major, Hob. Vlla: 1: I. Allegro Moderato
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Violin Concerto in C Major, Hob. Vlla: 1: II. Adagio.
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Cello Concerto in D Major, Hob. Vllb: 2: I. Allegro Moderato
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Cello Concerto in D Major, Hob. Vllb: 2: III. Allegro
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