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 0x94a40452bac7fb8d28fc12ac4a4540d7e0b20f21ea83f9e603c73641157ddb1e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e02f460f-9efd-4081-95cd-8b0d30bb22ac.json and https://artists.proofprofile.net/proofs/artist/e02f460f-9efd-4081-95cd-8b0d30bb22ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cantos Y Revueltas (En Directo En El Palacio De La Ópera De A Coruña / 2018)
El Diablo Suelto - arr. for Trumpet, Cuatro and Maracas - En Directo En El Palacio De La Ópera De A Coruña / 2018
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 0xfc4a689bae67e2c89b7b3fbdccee9059a5fddce36975ea6c80ebbae4ee84d1ac. 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/ES5701900559.
Cuatro Estaciones Porteñas: 2. Invierno Porteño - Arr. Efrain Oscher - En Directo En El Palacio De La Ópera De A Coruña / 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f55306d4112f657170a3441b56e744cf29181e5d30af69b5036ae69144991b. 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/ES5701900560.
Concerto for Corno da Caccia in E-Flat Major: 1. Allegro - Arr. for Trumpet - En Directo En El Palacio De La Ópera De A Coruña / 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bf1810956063a583921529a174861428ba46c02b8e7ee89b3c781af6e25f2f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES5701900554.
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
Cantos Y Revueltas - En Directo En El Palacio De La Ópera De A Coruña / 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184bcfbbd5f1f06a745e0cc71731c2d5ab91f88c313b5905e520077e9fa3f190. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES5701900558.
Brouwer: Concierto de Benicàssim - Rodrigo: Concierto de Aranjuez - Martin: Guitare
Falla: El Sombrero de Tres Picos - El Fuego Fatuo
Fuego Fatuo, Orchestral Suite on themes by Chopin: V. Mesto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3e2c98a8d34158cf9a4012327d69e02bce72197a62cb70e157a55e47bf68e. 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/CH1260881013.
Fuego Fatuo, Orchestral Suite on themes by Chopin: VII. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0282b0fed10ff11d7215d00ccba38a6b2768e136889d4e73a99beab0b90ebf. 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/CH1260881015.
Música Clásica Galega Vol VII - A Música Sinfónica Do Século XX
Melchor López: Misa Solemne (Música Clásica Galega Volumen 4)
Sonata Da Chiesa No. 3 En Do Majeur, Op. 5: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25eaae7d717c6f47f5d180cd2f287b34c3e366ce2f46447a4844de28c9d0b92. 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/FRV770700013.
Concerto Pour Deux Altos Et Orchestre À Cordes En Sol Mineur, RV 531: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28020b08155c28a5e634a595b5c850c9f35154387a1ddd6c32c947934cde4862. 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/FRV770901007.
Cantata No. 21, BWV 21 "Ich Hatte Viel Bekümmernis": I. Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60a3f433e0827bb8c81addc1e50492676d5926edc91b375e39fc8231d36ba47. 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/FRV770901008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44d30f27fb7ba083176c9225d4245aac773e4b0049b685d30fd5b153ab867a8. 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/FRV770901016.
Concerto En Ré Mineur, BWV 1060R: II. Largo Ovvero Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a7853cb5aeae6083b67b1843f355256e23d8e7ad63accc26fae4d16078e5bf. 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/FRV770901017.
Concerto Grosso No. 10 En Ré Mineur, Op. 6: Air Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6624b970119f8108ab8ef181d75098bbcea7c2b5d126aa73c7b23eed9f39499. 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/FRV770901010.
Concerto Grosso En Sol Majeur, Op. 6, No. 1: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1070909f039589bd00ce7ff78ea3c68233cda566c1e5a14b1e4c3b0e8853a49. 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/FRV770901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299be6185671b88dfdcdb333a8aac7ea592893d8f3f23b44954a6684ac650479. 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/FRV770901019.
Concerto Pour Violon Et Orchestre En Mi Mineur, Op. 64: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c8a47c8780cea194ddd09a48ad7871f0244d6a9ca6de8746196d14bab9a8aa. 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/FRV770901011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa364d5dd8750e0ebaf2b5a37996dedbbe102d54f9bae615dcea149962b8772b7. 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/FRV770901012.
Nocturne No. 20 En Do Dièse Mineur: Lento Con Gran Espressione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9dc3faca2465bf31d3558b6f7e645ad46d688fae9d68a4fda296851bef44c. 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/FRV770900227.
L'arlésienne, Op. 23, Suite No. 1: Adagietto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997a929ae3fd2dfc5fe2893caae351b1327a755249574f4b3fd0be7599bf52d7. 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/FRV770900228.
Sérénade Pour Cordes En Mi Majeur, Op. 22:II. Tempo di valse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac28a9e7966f66629d78ebbd295b5fa37213e0c5c6167bc24eb581b0d2e5b886. 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/FRV770900223.
Symphonie No. 5 En Do Dièse Mineur: Adagietto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409ca31a25eb0fabe4d4ab678c9656adaaf230760b590391764a5b839636631e. 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/FRV770901013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0aaff0f4bd0d4924e1ca346e7a6c86bf5e0ba6fde23b483831831975d4e00. 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/FRV770900224.
Six Gnossiennes: Gnossienne No. 1 (Lent)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeafcdba39be116dc1dbcc90577841adceaed873abfc1ed597c930fc9ba60488. 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/FRV770900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3829dd197be3c11f83b98e4d05962990d968cfc4d9d66ab004f12a56281c1f. 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/FRV770900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d8fb9c42deb80217e015d37e13429ccfdf1cd5ed0c98dd2a680b3053c99b51. 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/FRV770900231.
Symphonie No. 4 En Do Mineur, D. 417 "Tragique": II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e12ca0753203ab161f5695b213a9aafe54d53e3df65c5851227092a3725e05. 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/FRV770901020.
Joaquín Rodrigo: Obra para Orquesta de Cámara II