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 0x2760f8719e35ace69778defc1610a914b6802d88b13cf3cdc198d778bc47bfd4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1664cea5-cfc3-48e3-b897-e0e5664d487e.json and https://artists.proofprofile.net/proofs/artist/1664cea5-cfc3-48e3-b897-e0e5664d487e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x846561a996dd053056a60820fcb4fdd278977aafa0473b1bff937f667698c594. 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/64OwpI7W3UF4IKWOmPhji7.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/64OwpI7W3UF4IKWOmPhji7.
Dias de Luta, Dias de Glória / Rodo Cotidiano (Cover)
Dias de Luta, Dias de Glória / Rodo Cotidiano - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1ed1e0ed56604bc543e308147ab404331bd94040aa73497b6b0601511ff93. 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/1P7QdYlWLALWFzIPYNBsgQ.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/1P7QdYlWLALWFzIPYNBsgQ.
Várias Queixas / Aurora Boreal / Lanterna dos Afogados - Cover
{"copyright_id":"0xbbcdacf53c36fa3f7651c9788042fc4c3931966602ba3a98dce4fba8408c0a07","isrc":"BXTMX2100002","name":"Aquarela: Aviador","registered_at":"2026-06-05T09:13:02Z","spotify_id":"2zHfO8ye2LPw4r8cjgh7UD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcdacf53c36fa3f7651c9788042fc4c3931966602ba3a98dce4fba8408c0a07. 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/2zHfO8ye2LPw4r8cjgh7UD.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/2zHfO8ye2LPw4r8cjgh7UD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6580e059033ead3b55438223778c5382e3713d12a596361c7b75b358b671ebcc. 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/7iSDmPJNHnT7OYv1KYdvP2.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/7iSDmPJNHnT7OYv1KYdvP2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820cbf44079411a8a952be78e136b2fe7948685316fae317382bd673a561de3e. 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/0RUhod233GsEhWOFSHpcBz.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/0RUhod233GsEhWOFSHpcBz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9403121b3c81189ed0880899f7a93ee4d877a19a11f629f12dd386de81d58fa. 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/1oFXWGb5SWcChrzJuXXmvj.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/1oFXWGb5SWcChrzJuXXmvj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c3761d7d1fe00ffcc93f57c025e41c49e506f4caf80b189fe263a35791ea2f. 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/1HymlmazVYLLHySbZIK5bc.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/1HymlmazVYLLHySbZIK5bc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19041610904f4ebfd2a8334db5ebdef51735449385dff8bef7c1648be0ad439. 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/1PXLHt8vtqY8AuzjvPrGHG.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/1PXLHt8vtqY8AuzjvPrGHG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d16f1d0e4cab2e11ad4ff6b19b5e4c552c53ffa296754982000eab96c8d4e. 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/20wIrcGG5aJS27NYcA422k.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/20wIrcGG5aJS27NYcA422k.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3a3f72366053725d4334b1b4e0cf8c5047a49fb8e07c815ca2f331f21e1965. 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/4ZKOsDXOp7eQqhIdBcuc5j.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/4ZKOsDXOp7eQqhIdBcuc5j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cbaab13c692674ed91e21399dcea7ad890230483dfccfdaabcaa2448ad55d1. 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/6G9ZBD209DRFToSC8AEW1d.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/6G9ZBD209DRFToSC8AEW1d.
{"copyright_id":"0xf97657e47ff8ae71c8b82fb73413e98ad8ec81ee538c7fe29acd0e82fd868c0f","isrc":"BRUM72100850","name":"Flor De Lis","registered_at":"2026-06-04T08:58:23Z","spotify_id":"10AZciYmkGzQWmwohEQLj0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97657e47ff8ae71c8b82fb73413e98ad8ec81ee538c7fe29acd0e82fd868c0f. 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/10AZciYmkGzQWmwohEQLj0.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/10AZciYmkGzQWmwohEQLj0.
{"copyright_id":"0x3cd281d1fac755f204db2524d1493bfb0c9ab152dcb8fe4013d9b04193e7d08d","isrc":"BRUM72100848","name":"Linha Do Equador","registered_at":"2026-06-05T08:20:40Z","spotify_id":"6fLxSquD4lYonPe48dWL3J","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd281d1fac755f204db2524d1493bfb0c9ab152dcb8fe4013d9b04193e7d08d. 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/6fLxSquD4lYonPe48dWL3J.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/6fLxSquD4lYonPe48dWL3J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc714e3798ebe09920f5a040285bfabf8bfe83f603e1ab8790c71f1e8c8d0a6a6. 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/6WZ6M6NhmMMe4YojYodCRV.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/6WZ6M6NhmMMe4YojYodCRV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f8eff6293df4c3c18ccbcd375263bbc7b73d8aad68e9bb6ba4c3c283af5747. 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/72LKXncrEV0JqumknvCmFe.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/72LKXncrEV0JqumknvCmFe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1ed1e0ed56604bc543e308147ab404331bd94040aa73497b6b0601511ff93. 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/6vIArV7bCoS4K0C1eFhb0Z.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/6vIArV7bCoS4K0C1eFhb0Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc3d4454a1ee8874c3ff02c7bcbbd59d4088c696c22291e8be312619f361e43. 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/4iHU3l2MXuSKb3E5S4MvN7.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/4iHU3l2MXuSKb3E5S4MvN7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d02e69dbe874964dfa0694040cdd37163a5fee54ead89e301b9b686e2084b0. 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/5khNcLymcu3733EXsai71w.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/5khNcLymcu3733EXsai71w.
{"copyright_id":"0x888d5c05fc40ed1e59e1840460e99ce98eed88c06f01e57cc0c2fccea40c7181","isrc":"BRUM72000766","name":"Cantando Eu Vou","registered_at":"2026-06-19T09:21:45Z","spotify_id":"28ovGmpBG4AizOvpSX3RuG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d5c05fc40ed1e59e1840460e99ce98eed88c06f01e57cc0c2fccea40c7181. 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/28ovGmpBG4AizOvpSX3RuG.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/28ovGmpBG4AizOvpSX3RuG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3a3f72366053725d4334b1b4e0cf8c5047a49fb8e07c815ca2f331f21e1965. 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/0UVTKiIZzYhGpiZ7hNfNoE.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/0UVTKiIZzYhGpiZ7hNfNoE.
{"copyright_id":"0x118fd56392d06b8f31476a9f13b424928bf5bbf11f113bee9ac1af00ca69aad2","isrc":"BRUM71706702","name":"Meu Abrigo","registered_at":"2026-06-24T10:23:39Z","spotify_id":"2qEcdAQHySg2QpecTfWmSP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118fd56392d06b8f31476a9f13b424928bf5bbf11f113bee9ac1af00ca69aad2. 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/2qEcdAQHySg2QpecTfWmSP.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/2qEcdAQHySg2QpecTfWmSP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1ed1e0ed56604bc543e308147ab404331bd94040aa73497b6b0601511ff93. 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/2Jlazzzk4fJQ1k8NoSz3RE.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/2Jlazzzk4fJQ1k8NoSz3RE.