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 0x320893e4d1db9883577a7d571dfbfca35e23a50cac3f855663c9c50745c417bc. 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/67223618-5a07-4f1e-bd0a-56a4e8d11957.json and https://artists.proofprofile.net/proofs/artist/67223618-5a07-4f1e-bd0a-56a4e8d11957.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 0xe9bfb9cdbc21332c9a3f3bf0df7806716b4b28c523e30e592479817890bdf50f. 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/0eJryPslHCAzkvIRmBe42D.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/0eJryPslHCAzkvIRmBe42D.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58341ce2aa4f411abd16453ba0d450ddc7947bc962a37e4f608a6232f56fad8. 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/30Vfu8hzI4L3NhCdpgIuHr.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/30Vfu8hzI4L3NhCdpgIuHr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac80d1c438f438485332f84a1b1425d0b499118e308e5643e1f0650aecc93f. 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/7KGPpjjSEqYHEohRUK4PA6.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/7KGPpjjSEqYHEohRUK4PA6.
{"copyright_id":"0x99ed568fdb675cdd044f2b08f2e935b104e40ae31b96b854ef87759a7c93fdcd","isrc":"BC3PG2500081","name":"0H no Ponteiro","registered_at":"2026-06-22T01:20:20Z","spotify_id":"0IXY96JRiaupMH1bXXxRcR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed568fdb675cdd044f2b08f2e935b104e40ae31b96b854ef87759a7c93fdcd. 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/0IXY96JRiaupMH1bXXxRcR.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/0IXY96JRiaupMH1bXXxRcR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9271d4ecff65ebbcf85cb2ac435e709f49f739e1eff8773ed1202126d9e977. 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/017rbMN6T7osIyvj9gEwFs.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/017rbMN6T7osIyvj9gEwFs.
{"copyright_id":"0xef6bdcac1fb810b10bb0b85b64c24af9e052dd1871697934b925e9233bf391bd","isrc":"BCSOR2500111","name":"Meu Mundo","registered_at":"2026-06-10T14:00:32Z","spotify_id":"1IhFdVlsscRyNxD01lXbhs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6bdcac1fb810b10bb0b85b64c24af9e052dd1871697934b925e9233bf391bd. 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/1IhFdVlsscRyNxD01lXbhs.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/1IhFdVlsscRyNxD01lXbhs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a722e74c848db64a9e626604cc3d261027ec22085b83df6b91e625cb36a0b52. 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/6A8rCOTVvtwJQGEsrG8PQ8.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/6A8rCOTVvtwJQGEsrG8PQ8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c87df3b490f2e001244aa5915d38553799202cede593a62d96765d07bbe853. 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/4NdSuXhphJtZsg73rDDXqm.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/4NdSuXhphJtZsg73rDDXqm.
{"copyright_id":"0xf4dad33a5261ebbfad4d9ff86b811636b066318e5eb36f41ddf2d8022562ac10","isrc":"BK89N2500198","name":"Segue Sua Vidinha","registered_at":"2026-06-08T17:25:17Z","spotify_id":"2gcQjeeGjmgDGLhwSb0ROf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dad33a5261ebbfad4d9ff86b811636b066318e5eb36f41ddf2d8022562ac10. 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/2gcQjeeGjmgDGLhwSb0ROf.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/2gcQjeeGjmgDGLhwSb0ROf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24592c680f70b42b206b2c5ad7c9a4908c4a1d6e851371050c937617f97e1b54. 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/1lmsc7V1gSzFKFhOOY1a7N.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/1lmsc7V1gSzFKFhOOY1a7N.
{"copyright_id":"0xa702650fbfef0922189bace207dc7bc78dd7277a98b8b48ebb42a02305f27664","isrc":"BX4IU2504046","name":"Modo Igor Guilherme","registered_at":"2026-06-04T09:39:18Z","spotify_id":"1ovMDDeEWAsdzGH0FNLHkF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa702650fbfef0922189bace207dc7bc78dd7277a98b8b48ebb42a02305f27664. 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/1ovMDDeEWAsdzGH0FNLHkF.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/1ovMDDeEWAsdzGH0FNLHkF.
{"copyright_id":"0x603c0635b8f74b77132d9edeebb2008b6f25ec48be49a68736d153c919d0619e","isrc":"BCFCV2401233","name":"Ela Só Quer Viver Com Raul","registered_at":"2026-06-20T06:21:42Z","spotify_id":"6TmjecqWFgyh5zzDcpRRdl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603c0635b8f74b77132d9edeebb2008b6f25ec48be49a68736d153c919d0619e. 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/6TmjecqWFgyh5zzDcpRRdl.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/6TmjecqWFgyh5zzDcpRRdl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4782d2a16cda304a4f6fbe00bf3818ae26708829d7f3b920d886763126b86c. 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/1jfOBCY3fwnD6vcBE0baH2.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/1jfOBCY3fwnD6vcBE0baH2.
{"copyright_id":"0x738665bb0c1607cbadd31875980e6d248aca33e21e2a86d9f386e8ac1e472a9f","isrc":"QZNJX2493661","name":"Quer Viver Com o 7","registered_at":"2026-06-27T02:31:12Z","spotify_id":"7jYk1RoyjhZehhqtGlxV8C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738665bb0c1607cbadd31875980e6d248aca33e21e2a86d9f386e8ac1e472a9f. 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/7jYk1RoyjhZehhqtGlxV8C.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/7jYk1RoyjhZehhqtGlxV8C.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf739bd12189304a124237f72f975acd204d73d0a04795e44d3924f72caefe9. 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/5Kgkw6leJNyrOlqbg6QOLQ.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/5Kgkw6leJNyrOlqbg6QOLQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdafa24fb50b4591ea82a47c6997a6b92c6555f18a2cf8c2f1d0f58eedf664f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:43:13Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2r1CdFA64D3QEdMCwckLrh.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/2r1CdFA64D3QEdMCwckLrh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc788823761298574ccd057e614a381961271da1f369b9e50e697cdd75009166. 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/2CfQ0UjO8rfFmJLNf1eSTW.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/2CfQ0UjO8rfFmJLNf1eSTW.
{"copyright_id":"0xd3eac3945035f35aa8e38850553d3c79708f91da9dc0a47a1ebc88a3b9c9aae4","isrc":"BC3PG2306379","name":"Jacaré da França","registered_at":"2026-06-21T02:40:13Z","spotify_id":"4EyIPivmgH2Qj5yxhvKSZi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3eac3945035f35aa8e38850553d3c79708f91da9dc0a47a1ebc88a3b9c9aae4. 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/4EyIPivmgH2Qj5yxhvKSZi.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/4EyIPivmgH2Qj5yxhvKSZi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00e81140aad61f54e21e52490053a1b01352728c70185192459dc2ce1412483. 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/53nzA6TuREAhQMSaO1s3WI.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/53nzA6TuREAhQMSaO1s3WI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0888728e42c801cf2e5e146ca4d3641ec347d9f8722a0c4cac1f2d8673271bce. 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/6rTscyvOqCgPuAT58Bhpjl.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/6rTscyvOqCgPuAT58Bhpjl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c65382941e2711f830a22ca0c4bf2ec0113c34d1f5f670664ab68b3ba28e02. 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/6YH4hng71zsFRzVEhzeVpb.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/6YH4hng71zsFRzVEhzeVpb.
{"copyright_id":"0x5b6eafb6580e03f7b636fe26ae422c04bcf09910cb03c13b51edc9376aefeac6","isrc":"BK2242401364","name":"Bom Dia Deus 2","registered_at":"2026-06-11T10:23:50Z","spotify_id":"6lpCjQYuKhkM8KyCOfvXFq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6eafb6580e03f7b636fe26ae422c04bcf09910cb03c13b51edc9376aefeac6. 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/6lpCjQYuKhkM8KyCOfvXFq.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/6lpCjQYuKhkM8KyCOfvXFq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c1373022b03c0718f8a1c9134b13123f0838964821a8eff58d233839017698. 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/3mcKVq08W4p8ArByNkKATK.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/3mcKVq08W4p8ArByNkKATK.
{"copyright_id":"0x75b21b99f2a3e97a6d81a5b1697678a2c9ec7b5aff799208f8e5e9ca1aa4acbf","isrc":"BCSOR2400040","name":"Cupido Vacilão","registered_at":"2026-06-06T22:49:14Z","spotify_id":"3fS8rjpPg2atXwFSC75B1B","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b21b99f2a3e97a6d81a5b1697678a2c9ec7b5aff799208f8e5e9ca1aa4acbf. 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/3fS8rjpPg2atXwFSC75B1B.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/3fS8rjpPg2atXwFSC75B1B.