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 0xc7a924d86f3655be29c892a70b624970f4581d03412067d12d2dbcbd967a8a5e. 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/893fe406-e817-4370-a11e-8772da82724f.json and https://artists.proofprofile.net/proofs/artist/893fe406-e817-4370-a11e-8772da82724f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x0febd42a59d30e322968fb9fca53fd7bb475abbdb0e2a76d328495d3199ea180","isrc":"USUG12300543","name":"Dime (with Conexión Divina)","registered_at":"2026-06-04T12:38:55Z","spotify_id":"0RUEaNVgRbaj8Mm1qPaHri","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 0x0febd42a59d30e322968fb9fca53fd7bb475abbdb0e2a76d328495d3199ea180. 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/0RUEaNVgRbaj8Mm1qPaHri.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/0RUEaNVgRbaj8Mm1qPaHri.
{"copyright_id":"0x6e20efe935cd3d4ea08d0446b6ea4f0d0cf8f55f1ec992a2fcc7b42ea4bfad17","isrc":"USSD12300138","name":"Paso A Pasito","registered_at":"2026-06-07T09:38:42Z","spotify_id":"0oXXhfxgC0dV4UFvVKLL6J","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20efe935cd3d4ea08d0446b6ea4f0d0cf8f55f1ec992a2fcc7b42ea4bfad17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0oXXhfxgC0dV4UFvVKLL6J.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/0oXXhfxgC0dV4UFvVKLL6J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36d50d140037421f5bc18d62bcacff2347721122b9e1ff4dc21862fbec9bf12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1B6qELj6tu483E2iAxfxrG.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/1B6qELj6tu483E2iAxfxrG.
{"copyright_id":"0xc8cc1f646fb703588194fb63a39ccf6d51aa73be10771705d6f93b8447b0cdb8","isrc":"QZYCS2300004","name":"Ya Estando Bien Loco","registered_at":"2026-06-11T18:45:50Z","spotify_id":"6d4CZTrDAdaPZOHdZBCOl0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cc1f646fb703588194fb63a39ccf6d51aa73be10771705d6f93b8447b0cdb8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6d4CZTrDAdaPZOHdZBCOl0.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/6d4CZTrDAdaPZOHdZBCOl0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d56cd3c9c5d20c7ac07c3336577ac753feb1e867a4b2453ad9ba917b57393. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1a0U6PXF3lUi3NaMwIeW5G.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/1a0U6PXF3lUi3NaMwIeW5G.
{"copyright_id":"0xa9729e2a33e6b3aa4c34eb0681438460c4b634d2dbaff0b4f9527ed5a93b4e78","isrc":"QZYCS2300012","name":"¿Qué Pasó Ayer?","registered_at":"2026-06-23T16:30:12Z","spotify_id":"0aDdzzPlhsbIuveJAM0mOw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9729e2a33e6b3aa4c34eb0681438460c4b634d2dbaff0b4f9527ed5a93b4e78. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0aDdzzPlhsbIuveJAM0mOw.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/0aDdzzPlhsbIuveJAM0mOw.
{"copyright_id":"0xa9729e2a33e6b3aa4c34eb0681438460c4b634d2dbaff0b4f9527ed5a93b4e78","isrc":"QZYCS2300012","name":"¿Qué Pasó Ayer?","registered_at":"2026-06-23T16:30:12Z","spotify_id":"4Nu0C7alSyNnBuFH4ilbUF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9729e2a33e6b3aa4c34eb0681438460c4b634d2dbaff0b4f9527ed5a93b4e78. 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/4Nu0C7alSyNnBuFH4ilbUF.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/4Nu0C7alSyNnBuFH4ilbUF.
{"copyright_id":"0x66c803e861fa8df6472ac7b49955ac705aaee8de23f75206c7ca48b66d1d8eb1","isrc":"USSD12201310","name":"Las Ganas","registered_at":"2026-06-18T03:16:56Z","spotify_id":"0rIzfRdpzaZDc1UHgLDauw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c803e861fa8df6472ac7b49955ac705aaee8de23f75206c7ca48b66d1d8eb1. 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/0rIzfRdpzaZDc1UHgLDauw.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/0rIzfRdpzaZDc1UHgLDauw.
{"copyright_id":"0x6e20efe935cd3d4ea08d0446b6ea4f0d0cf8f55f1ec992a2fcc7b42ea4bfad17","isrc":"USSD12300138","name":"Paso A Pasito","registered_at":"2026-06-07T09:38:42Z","spotify_id":"098EZ7cByfKymuAiMKtOmR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20efe935cd3d4ea08d0446b6ea4f0d0cf8f55f1ec992a2fcc7b42ea4bfad17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/098EZ7cByfKymuAiMKtOmR.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/098EZ7cByfKymuAiMKtOmR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5391773a63bcab606bffe0fe267635b9e37486f37d2c37d80ff4ad2c55e93fcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6FGZ8HNyXpntKqC1bGAT8N.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/6FGZ8HNyXpntKqC1bGAT8N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879f9708fa0f9266b116221cbc27314ead60429ac489fd68be5bc30bf536c64d. 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/4LzDJra2C2BlUzuRgUH948.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/4LzDJra2C2BlUzuRgUH948.
{"copyright_id":"0x7c491605c3ae567209b9f21af4779afce9c0ff174dc9fcc4329cfd14a2d6f6b9","isrc":"USSD12201308","name":"Cambio De Canción","registered_at":"2026-06-18T18:23:15Z","spotify_id":"3R08fx84aFdqHlKTMWkEvi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c491605c3ae567209b9f21af4779afce9c0ff174dc9fcc4329cfd14a2d6f6b9. 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/3R08fx84aFdqHlKTMWkEvi.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/3R08fx84aFdqHlKTMWkEvi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8e9725ea687fa5b709fe9d26967a50a555a285d250a93ba46a21921bfb82a. 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/0E0FMhhsgteKZFAjMb5zou.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/0E0FMhhsgteKZFAjMb5zou.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1758277e06a88c0d74494c954a2da49771ad797da3d783ce27e9f10476d98e21. 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/6gYWXsmZFxGeXuKw9hjViE.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/6gYWXsmZFxGeXuKw9hjViE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e867f56d71374f3564d940c14fae6c25365d3fd3216c6123ffb64c05e37ccd1. 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/3vXdZitlJWLTAawuSLSax0.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/3vXdZitlJWLTAawuSLSax0.
{"copyright_id":"0xa33d1718a58cecb5dad2c66ab7ed54e0c7ef553f839f773e9b19cf9ad8e55d55","isrc":"USSD12300137","name":"Si Te Vas (feat. Los Aptos)","registered_at":"2026-06-19T14:15:44Z","spotify_id":"6nf6tNacf31z8npZtl5FjV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33d1718a58cecb5dad2c66ab7ed54e0c7ef553f839f773e9b19cf9ad8e55d55. 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/6nf6tNacf31z8npZtl5FjV.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/6nf6tNacf31z8npZtl5FjV.
{"copyright_id":"0x3f87fb10451b4be8eb25d225dc055e0ea30832f3de65da832eb12b8f10f6c74f","isrc":"QZY5J2300009","name":"No Sirven Conmigo","registered_at":"2026-06-20T20:18:53Z","spotify_id":"2bnC2O6GypWJSIuyGCcXb2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f87fb10451b4be8eb25d225dc055e0ea30832f3de65da832eb12b8f10f6c74f. 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/2bnC2O6GypWJSIuyGCcXb2.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/2bnC2O6GypWJSIuyGCcXb2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa306f33c2bbb861ed4d68b153df4a1e732d3748258004f30f9578871600b99f. 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/5TOSj4RD0DP9ntUD4ng3p1.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/5TOSj4RD0DP9ntUD4ng3p1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5391773a63bcab606bffe0fe267635b9e37486f37d2c37d80ff4ad2c55e93fcf. 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/2EQKYVMpnpvyUaHZL2VQlU.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/2EQKYVMpnpvyUaHZL2VQlU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e3a01d855e2d9fdef06c4019fa8fa54ad85e4fb828e93080c007886559d2f. 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/5AmZTocG6dh1jN22KgIF2H.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/5AmZTocG6dh1jN22KgIF2H.
{"copyright_id":"0x7c491605c3ae567209b9f21af4779afce9c0ff174dc9fcc4329cfd14a2d6f6b9","isrc":"USSD12201308","name":"Cambio De Canción","registered_at":"2026-06-18T18:23:15Z","spotify_id":"5vd0rJM8Z0TcL4bu68vL6Q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c491605c3ae567209b9f21af4779afce9c0ff174dc9fcc4329cfd14a2d6f6b9. 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/5vd0rJM8Z0TcL4bu68vL6Q.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/5vd0rJM8Z0TcL4bu68vL6Q.
Cómo Poder Olvidar (Spotify Sad Sierreño Holiday Singles)
Cómo Poder Olvidar - Spotify Sad Sierreño Holiday Singles
{"copyright_id":"0xf56e54b993d442fce9a8e0dd2e8307d62bde192bd06a8be67d00c8e3ec5229d0","isrc":"USSD12201154","name":"Cómo Poder Olvidar - Spotify Sad Sierreño Holiday Singles","registered_at":"2026-06-19T18:09:15Z","spotify_id":"4OZCu7pKTrlkFEScQiaBPw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56e54b993d442fce9a8e0dd2e8307d62bde192bd06a8be67d00c8e3ec5229d0. 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/4OZCu7pKTrlkFEScQiaBPw.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/4OZCu7pKTrlkFEScQiaBPw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8e9725ea687fa5b709fe9d26967a50a555a285d250a93ba46a21921bfb82a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/05Mh0eLIDdkUwQDOTe8VYZ.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/05Mh0eLIDdkUwQDOTe8VYZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1758277e06a88c0d74494c954a2da49771ad797da3d783ce27e9f10476d98e21. 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/0CoXRdJsAoElmYCXldiVIg.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/0CoXRdJsAoElmYCXldiVIg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e867f56d71374f3564d940c14fae6c25365d3fd3216c6123ffb64c05e37ccd1. 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/77sMV8IQQb8azd7v3ZAtvC.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/77sMV8IQQb8azd7v3ZAtvC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede8e9725ea687fa5b709fe9d26967a50a555a285d250a93ba46a21921bfb82a. 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/3lD9MZbyyl6fAirYEgmABl.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/3lD9MZbyyl6fAirYEgmABl.