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 0x5e19df34f33a563c5637aeb21db0c8f31ef06abb159eebb064323ae5368c2c6b. 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/f1a0cf8c-9493-4e8a-a1a2-09e69332ebc3.json and https://artists.proofprofile.net/proofs/artist/f1a0cf8c-9493-4e8a-a1a2-09e69332ebc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x50683d18cf052d90c3dfece0db744336286b598e09051c40ae47a0dd2ed79296","isrc":"SE6XW2386539","name":"Olvídate De Ella","registered_at":"2026-06-11T17:08:40Z","spotify_id":"1VovhVHTr6euDOwdyxtKTl","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 0x50683d18cf052d90c3dfece0db744336286b598e09051c40ae47a0dd2ed79296. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1VovhVHTr6euDOwdyxtKTl.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/1VovhVHTr6euDOwdyxtKTl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e14c34ab68fc9033bc87b6405a11a4ac919717c4f0bfd387ebd8476d0746282. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0LfpozyCa6eOqLLrRXf1iX.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/0LfpozyCa6eOqLLrRXf1iX.
{"copyright_id":"0xe48023b78c11bcd91a1ea4c9e6be49e3b0b043ad147919a5b39ec8aa9c9c6247","isrc":"ES8401500219","name":"Los Amigos Asi","registered_at":"2026-06-08T05:35:27Z","spotify_id":"5IOCDCh9RfimTmJfySYN8i","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48023b78c11bcd91a1ea4c9e6be49e3b0b043ad147919a5b39ec8aa9c9c6247. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IOCDCh9RfimTmJfySYN8i.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/5IOCDCh9RfimTmJfySYN8i.
{"copyright_id":"0xf2c1138322cfa7d21a83c249646f8dc7be0fe676ccff90f189dbc0ab10f2087a","isrc":"ES8401400775","name":"Corridos Continuados I","registered_at":"2026-06-25T12:44:55Z","spotify_id":"7zDyobH6IAKr6I2qTJqHq5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c1138322cfa7d21a83c249646f8dc7be0fe676ccff90f189dbc0ab10f2087a. 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/7zDyobH6IAKr6I2qTJqHq5.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/7zDyobH6IAKr6I2qTJqHq5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d665e46a8e37c6fd916c24a17a008d825c8477f66fecb718daa6d501779a6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/056QVw45o1uSYZxadjbPaP.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/056QVw45o1uSYZxadjbPaP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf6f1454d45e7e5246186f3a4c9a67574edb57369c11818b31687d659bb41d7. 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/0yQfvUmBLjCYnjuMyE8E6K.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/0yQfvUmBLjCYnjuMyE8E6K.
{"copyright_id":"0xff9712f13a529f449a8bb10692a3aff4228c21bdc3c46f16f1d66c6a4e2d9f75","isrc":"ES8401300892","name":"Que Bonita es Esta Vida","registered_at":"2026-06-09T10:36:00Z","spotify_id":"4IAsys4RNiLDfR1NVWQuVI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9712f13a529f449a8bb10692a3aff4228c21bdc3c46f16f1d66c6a4e2d9f75. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4IAsys4RNiLDfR1NVWQuVI.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/4IAsys4RNiLDfR1NVWQuVI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c9977a62d87b7aa15f2ac8335dab3d7c2f6410630212b9e421489f23d298f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/02sQy8mZZB6guvLTbY25dT.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/02sQy8mZZB6guvLTbY25dT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41e5325369e232e40985c8736c86a3d84f65e73fb21aded4179afebd8781a69. 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/21f7Xi4LKzuPfUxz8j1sEt.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/21f7Xi4LKzuPfUxz8j1sEt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed07f91b6f002ebc3311591f57decb610ac74689923476c2e7cb4eb24c19f18e. 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/7c6OAE5FmSNPPCrJt9oIzY.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/7c6OAE5FmSNPPCrJt9oIzY.
{"copyright_id":"0xcef25d018fa2bf1ab9bfb2ece6e9dd7b0a9dead2576d2894a4b8d4e908c28589","isrc":"ES8401300906","name":"Si no te Hubieras Ido","registered_at":"2026-06-26T13:20:18Z","spotify_id":"5nkr9GrHPJ96ZQ2LlZ53EW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef25d018fa2bf1ab9bfb2ece6e9dd7b0a9dead2576d2894a4b8d4e908c28589. 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/5nkr9GrHPJ96ZQ2LlZ53EW.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/5nkr9GrHPJ96ZQ2LlZ53EW.
{"copyright_id":"0xbaa1b9cf1168bfa75091967366468d8e7384ba05af9a834f2602adfeca3b7e4a","isrc":"ES8401300907","name":"Me Voy a Escapar Contigo","registered_at":"2026-06-21T12:47:01Z","spotify_id":"6AU95jizbtRYuV5vDInYWF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa1b9cf1168bfa75091967366468d8e7384ba05af9a834f2602adfeca3b7e4a. 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/6AU95jizbtRYuV5vDInYWF.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/6AU95jizbtRYuV5vDInYWF.
Las Mas Pedidas (Lo mejor de Pepe Benavente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff16a6ca926db09a0ab26711d7a004e163f3d82e4579d152ea76a2afd93c3a. 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/3muTifPWv4bDSmmgv7JobA.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/3muTifPWv4bDSmmgv7JobA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828047188298eae0ea57900d8515df0c823385a6d79a9cef41119e9650a7e82c. 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/7rtYOax3ThYRwMEYGFqsi5.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/7rtYOax3ThYRwMEYGFqsi5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94408e9d122e93e39255bc741dd96fefefaddc820c989e7a5b80702040f86589. 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/5kAtZfTH0kD0k3UDuqJ5Ue.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/5kAtZfTH0kD0k3UDuqJ5Ue.
{"copyright_id":"0x588809a49cad9055db913949e810ade18ac099e25bdfe1af929cf8e23e538dd8","isrc":"ES8401302100","name":"Prisionero de Tus Brazos","registered_at":"2026-06-21T09:22:38Z","spotify_id":"5nlwGctcbQ1u3MRu3vz9xz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588809a49cad9055db913949e810ade18ac099e25bdfe1af929cf8e23e538dd8. 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/5nlwGctcbQ1u3MRu3vz9xz.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/5nlwGctcbQ1u3MRu3vz9xz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2988ea869df1577e726a3e26d6e9fb7152606017639d6bc7d98cc8cbd487cd. 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/5oph0WsDL3RuuEg2lae0Ch.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/5oph0WsDL3RuuEg2lae0Ch.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8329a54ee1be249329543aacff5c6a3ee7c20a915a140b4ea2e031e790db5f03. 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/75K8n9bELP5qRLKPiNU7ve.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/75K8n9bELP5qRLKPiNU7ve.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b3a39d37e0afb3c514c4f1466ce547536e20f842662e81a5342bfcb0b0e08. 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/5kR9qh3NuNCY74244gVtHj.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/5kR9qh3NuNCY74244gVtHj.
{"copyright_id":"0xc099c8fa5088c3a6c4dd615ceecf4a1c23fdb7ff17539a5c7cb935746315c4f8","isrc":"ES8401302219","name":"Parranda Larga","registered_at":"2026-06-25T14:44:07Z","spotify_id":"39HUk5SCzHNY3MBDM9hnUQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc099c8fa5088c3a6c4dd615ceecf4a1c23fdb7ff17539a5c7cb935746315c4f8. 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/39HUk5SCzHNY3MBDM9hnUQ.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/39HUk5SCzHNY3MBDM9hnUQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0272ed8e11a6e00937f35fa108fbf1f0de44cb92c291354d7ece45788257a7. 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/1BDb7u6T87zTezH1N6ojKy.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/1BDb7u6T87zTezH1N6ojKy.
{"copyright_id":"0x560897451e73ffe49efaaeaad5bfe0fffc7bfd1859fe3d88ac4e7c1938b10f1d","isrc":"ES8401302132","name":"Una Noche Como Esta","registered_at":"2026-06-22T08:11:54Z","spotify_id":"0bJIhJdLKxGcJ8WiEArTnn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560897451e73ffe49efaaeaad5bfe0fffc7bfd1859fe3d88ac4e7c1938b10f1d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0bJIhJdLKxGcJ8WiEArTnn.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/0bJIhJdLKxGcJ8WiEArTnn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57467e2f3ec3aff48ccf974c77c622ac4804bf1ad182933070095d0383cb0e5c. 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/6QaXIVn8cOR0Qqp9ZaurJo.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/6QaXIVn8cOR0Qqp9ZaurJo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851bbe6d27693b6a5834a14b526b725ddab5e59337ff62074cf6d0cb735c5279. 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/2puBavcYcWV6hWNmx2O1IO.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/2puBavcYcWV6hWNmx2O1IO.
{"copyright_id":"0xeea3fb6dfb393ec8ea5da9da8d9fbe0c6b73f571ffa03e90c3c3d4ebba6cee86","isrc":"ES8401300333","name":"Por los Caminos de la Vida","registered_at":"2026-06-18T21:04:52Z","spotify_id":"6uFYrXbXMDZbIGtOjYdLcN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea3fb6dfb393ec8ea5da9da8d9fbe0c6b73f571ffa03e90c3c3d4ebba6cee86. 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/6uFYrXbXMDZbIGtOjYdLcN.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/6uFYrXbXMDZbIGtOjYdLcN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6XyGPap9KsaBaEO8kwjL26.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/6XyGPap9KsaBaEO8kwjL26.
{"copyright_id":"0x2cd91b83b9563068290dcb72af8c8221d7f43fa3664e402253f2ed2ce07a59fd","isrc":"ES8402200038","name":"Quédate - Versión Merengue","registered_at":"2026-06-18T20:57:21Z","spotify_id":"7FjIJSPIhgocLBzqAHjuAh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd91b83b9563068290dcb72af8c8221d7f43fa3664e402253f2ed2ce07a59fd. 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/7FjIJSPIhgocLBzqAHjuAh.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/7FjIJSPIhgocLBzqAHjuAh.