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 0xbbab8259b4a9735fed7663d7976d7c1e6308bedc932d77f6d9ec19e0f7c8d9ed. 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/61ea2327-003d-43e9-b082-66cc0a962715.json and https://artists.proofprofile.net/proofs/artist/61ea2327-003d-43e9-b082-66cc0a962715.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Greatest Movie Soundtracks, Vol. 6 (Solo Piano Themes)
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 0xa600d56a5a29d72b6695a4e15d002d11cdc5691ca180df48abf78538c40081f8. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:56Z), 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/GBAZM1900004.
Once Upon a Time in the West (Solo Piano)
As Mais Lindas Canções E Músicas De Amor Para Piano Solo
San Valentino: le più belle canzoni d'amore per piano solo
Saint Valentine: The Greatest Love Songs for Solo Piano
Saint Valentin : les plus belles chansons d'amour pour piano seul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a503f6ee972e263d8d9e4eab111cdc08ae862f6de69d192b5111c620dc29569. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITDC81400163.
The Heart Asks Pleasure First - Du film "La leçon de piano"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3438af6204568e5fd257b82a611341efce572be15e456efa7b5dc43cf3105d96. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITDC81400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e8578ce63d4ece2e4f46721c76f24d016e6dac38fc7ce7bbba5090c2e361f. 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/ITDC81400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad78550486a6bdead5b8a604bd0a112d2d487da0422efb4d06bd129767ffaac. 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/ITDC81400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d7be61c567507e5b1234b3927585037417f6164994d63092545a8ea935875. 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/ITDC81400189.
Mùsica de Películas para Piano Solo, Vol. 2 (Las Bandas Sonoras de Cine)
El Corazón Pide Placer Primero - De la Película "El Piano"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420ffba75a42e66ef6cf12d0032bd1b76aa32e6fc67c64f9df14e9c860f2b581. 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/ITDC81401087.
Tema de E.T. - De la Película "E. T. El Extraterrestre"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d35394640ca38cb7e2ea4391d0172f61881875c7ef2e37bb1928fe8cfc88c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITDC81401088.
Cinema Paradiso, Tema de Amor - De la Película "Cinema Paradiso"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ab115e5a08de9a7f2ff8d097fffcc6c9826e6d9bb30a71930b32c0be36e110. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITDC81401089.
La Conquista del Paraíso - De la Película "1492: La Conquista del Paraíso"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff28e1605ebd6bc64e9fd14a8c9fb955f1b61bdc4f3a66e217436df1efbb096b. 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/ITDC81401090.
El Tema de Deborah - De la Película "Érase una Vez en América"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b053fe53dfe4e3985a7fd29189ab05e7495368b9f09c7e29ba8e3056743520. 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/ITDC81401091.
El Exorcista / Halloween - De las Películas "El Exorcista" Y "Halloween"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436bb1e74b82215b3002c360dcf784d6dff7d15e8334b974ca55f1465b72b4d5. 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/ITDC81401092.
El Señor de los Anillos - De la Película "El Señor de los Anillos"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140dc759eb8acf7f457ac716347a5c17e82c78f32273ef92dbadad33b318e4ee. 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/ITDC81401093.
Mi Corazón Seguirá - De la Película "Titanic"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ec92ddcaa3048a47f938b1ca006967d580e817ff22bd52260c004387136ebf. 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/ITDC81401094.
Bella's Lullaby - De La Película "Crepúsculo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec450cc4de7ef13d4e002de7cd6c073412506ad45d72656bf5257849ab9f0a95. 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/ITDC81401095.
Hedwig's Theme - De La Película "Harry Potter Y La Piedra Filosofal"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c42dd6307a9ea9e34d5e5dca25e843775bf785d7594e871805d3a80b1a94091. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/ITDC81401096.
El Tema de James Bond - De la Película "007 Licencia para Matar"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e9baf9fd8de7966296567d89eb4f323feb683f7826134db6b707a6f136c91e. 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/ITDC81401097.
Jurassik Park - De la Película "Parque Jurásico"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e1370fa3f023fbc51d0b9166546a1df07206e46c0b8a8d68ff7896d43fed66. 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/ITDC81401098.
Forrest Gump - De La Película "Forrest Gump"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6dbf8f1cc32efe3b44e770119a53c099818606f5257765ce8e9478ab34bc77. 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/ITDC81401099.
La Mirada del Amor - De la Película "007 Casino Royale"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c11e2f8fa0829506ffea7724ff16f2491200b386e6bae7ab57cfb820fd13b3. 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/ITDC81401100.
Lo Que el Viento Se Llevó - De la Película "Lo Que el Viento Se Llevó"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7b5ede0e0fd115042b8d44dbb801f98807f7f2f1c17658897c709cdc0f40de. 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/ITDC81401101.
Historia De Amor - De La Película "Love Story"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e33f59519d6c8a52ce5ec7d3fdf8c5cf1787f357d0eae597d3d75f7b08ae21b. 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/ITDC81401102.
Un Hombre y una Mujer - De la Película "Un Hombre y una Mujer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfdf93e982d87812560c3acd6d8c9bcd4dc69120712b7cc37e68d448ebec167. 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/ITDC81401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3e8e8e6fefce4cd1c826cbc19f5f4c27f4bc47ba59efbaac2e9906e8b2b6d9. 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/ITDC81401104.
Movie Themes Hits for Solo Piano, Vol. 2
Le più belle colonne sonore per piano solo, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186b6fd89cdaeec6c2549d5d5f3d8f6ce2c0c0a4865945c6f4276292413d9d9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITDC81401077.
As Mais Lindas Músicas de Filmes para Piano Solo, Vol. 2 (Trilhas Sonoras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c3cab36a9c43d00a953853f9239eb9c00bf2f4926fc23d8c1facc76a2be008. 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/ITDC81401114.
Love Story - Do Filme "Love Story - Uma História de Amor"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833f26fb5bcbff894ce5b5e872134735c1d189125c21bdcf0514d4636110f27a. 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/ITDC81401111.
... E o Vento Levou - Do Filme "... E o Vento Levou"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5e7069c6278943e9e52f3deec3cd869b3a147df991421d8f537988e551312c. 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/ITDC81401121.
As Mais Lindas Músicas de Filmes para Piano Solo, Vol. 1 (Trilhas Sonoras)
A Vida É Bela - Do Filme "A Vida É Bela"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48250f7fd360f2236719035c912f232886e08b20f0aa2a604dda1c3bea481946. 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/ITDC81400364.
Up Altas Aventuras - Do Filme "Up Altas Aventuras"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664d49048f7f98ba34ac7968df881c5876b06b513a519cead743c1a4eca2cfe7. 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/ITDC81400378.