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 0x7ebb2ec6cae526a8f3d97dd28f00c11dddca596621e0e70d67fee8edc1bd3728. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1157dd3e-5e7a-44eb-bca7-4fc5ed249d70.json and https://artists.proofprofile.net/proofs/artist/1157dd3e-5e7a-44eb-bca7-4fc5ed249d70.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 0x48f00625bfa7f3ce76ed3a84ff88049db0b9eaf503fb9d9845efb7d66ff12d95. 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/66Pn2f8UPRr4SgC0RIZROT.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/66Pn2f8UPRr4SgC0RIZROT.
{"copyright_id":"0xfcde93e81fdcbc3b30b6dcdc68881eaf38cb1fc8232a44286cb68cf7ddcaff01","isrc":"US7VG1771187","name":"Sangue Bom","registered_at":"2026-06-11T05:46:23Z","spotify_id":"6e7PwMONwxXJBtbzrHmaW0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcde93e81fdcbc3b30b6dcdc68881eaf38cb1fc8232a44286cb68cf7ddcaff01. 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/6e7PwMONwxXJBtbzrHmaW0.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/6e7PwMONwxXJBtbzrHmaW0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9d76e0114405732e4eb9724c3889f6362da81dd76f3ac4f4c30c0dfb5a76e1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Qgskik7lpEMS2iw3K4qB6.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/2Qgskik7lpEMS2iw3K4qB6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a47c28b207601fba351eb55871c756406471f7a816d8107a52ecf49a56291e. 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/2eEjTONe7YZcbALaS2dRcj.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/2eEjTONe7YZcbALaS2dRcj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d9963fcf87b533555479470f0078b799e99f7f65d608c6d6ff5db14e74b2c0. 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/4gQGxSLKmgQKIUgMOyDEYv.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/4gQGxSLKmgQKIUgMOyDEYv.
{"copyright_id":"0x909374d089f1e83d934f7142ecbb433bb8f5ab54d7ff35d8dbdd8ea2ae4086d8","isrc":"US7VG1771192","name":"Assim Caminha a Humanidade","registered_at":"2026-06-20T23:14:20Z","spotify_id":"1UtakC5eK0RWiFqoprPrwV","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909374d089f1e83d934f7142ecbb433bb8f5ab54d7ff35d8dbdd8ea2ae4086d8. 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/1UtakC5eK0RWiFqoprPrwV.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/1UtakC5eK0RWiFqoprPrwV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eb419e7c06656a8464f6def52751a6f23e5e332052fdbf169e60422479113f. 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/52JpE0XStetin6Pilk0WkR.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/52JpE0XStetin6Pilk0WkR.
{"copyright_id":"0xddd1dce9243d3c31ecba07dccfe1e3fd584fa306892db37de124a0af74ce4f58","isrc":"US7VG1771195","name":"Vinheta 3","registered_at":"2026-06-10T02:53:17Z","spotify_id":"23IdHylomY72aLpoF808Np","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd1dce9243d3c31ecba07dccfe1e3fd584fa306892db37de124a0af74ce4f58. 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/23IdHylomY72aLpoF808Np.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/23IdHylomY72aLpoF808Np.
{"copyright_id":"0x986c19f2199755fcbedfe1cf0661caea96cc88d4cc9b10337f5e271b5c846aa8","isrc":"US7VG1771196","name":"Siga Seu Caminho em Paz","registered_at":"2026-06-17T03:58:55Z","spotify_id":"3BIkVgECNELifJc0F0bJsy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c19f2199755fcbedfe1cf0661caea96cc88d4cc9b10337f5e271b5c846aa8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:29:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3BIkVgECNELifJc0F0bJsy.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/3BIkVgECNELifJc0F0bJsy.
{"copyright_id":"0x846b6adead155b7a4c89c8c5e24b7e5daddc6b8b5aa6ae9ad63fb9ae18824530","isrc":"US7VG1771200","name":"Viagem na Rima","registered_at":"2026-06-26T20:13:21Z","spotify_id":"6kTKD3umM95JLKx0Cav9ht","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846b6adead155b7a4c89c8c5e24b7e5daddc6b8b5aa6ae9ad63fb9ae18824530. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6kTKD3umM95JLKx0Cav9ht.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/6kTKD3umM95JLKx0Cav9ht.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52af994ab8d19721899f277122807d94cfcf305b798c3191a4fbd2b4bdf5568b. 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/57u17IdZJzxHpt4dfw4kIU.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/57u17IdZJzxHpt4dfw4kIU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee44ae6133dec179537a9607d8c31f7ad3c12bf18aed7afc470c7c574023090. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3sMfapRnekaVaziZELKKLG.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/3sMfapRnekaVaziZELKKLG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499cc709a7fea779ca88013f9c63f6a02d71169d169fd8065b3c0d0dbca7f3f9. 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/24PCCNJ71U7r65jcXwyX33.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/24PCCNJ71U7r65jcXwyX33.
{"copyright_id":"0x5f4bd61929e6d7ad47bfff5daa8a3f0a4406116a26cd97c9b89b1be5c678aaf1","isrc":"BRUM71401517","name":"(Claudio) Eu Tive Um Sonho - Live","registered_at":"2026-06-07T12:53:11Z","spotify_id":"4pG9PuGigXXWI3gWcufyam","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4bd61929e6d7ad47bfff5daa8a3f0a4406116a26cd97c9b89b1be5c678aaf1. 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/4pG9PuGigXXWI3gWcufyam.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/4pG9PuGigXXWI3gWcufyam.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62687b62c01021ed1fd0b4464385b916323f6727cc633a043097144a30884f30. 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/5j5q35M1POB8j6EdHHNW0J.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/5j5q35M1POB8j6EdHHNW0J.
Por mim e por Você (feat. Thaíde) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250f9891d0fd52090cee7493332b7c644f6d571082657d2136868a6e4c143d2e. 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/6i4YAA2trJdO7L9A76sPMJ.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/6i4YAA2trJdO7L9A76sPMJ.
{"copyright_id":"0x903cffa828f1b1ee571ebded1df7d3d23de3d062ce43ba855d2759381a6bcbba","isrc":"BRAP60600021","name":"Não Perca Sua Vida Na Noite - Ao Vivo","registered_at":"2026-06-11T11:04:57Z","spotify_id":"5MZtbYyt4qCHVBnVjCsHTB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903cffa828f1b1ee571ebded1df7d3d23de3d062ce43ba855d2759381a6bcbba. 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/5MZtbYyt4qCHVBnVjCsHTB.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/5MZtbYyt4qCHVBnVjCsHTB.
{"copyright_id":"0xa9f1b907e610da6229502c6864fddeaed6513bbe372353e8fb7a12976785842d","isrc":"BRAP69800012","name":"Não Perca Sua Vida Na Noite","registered_at":"2026-06-09T08:28:59Z","spotify_id":"6uz1oMUboyv9m4rbeKFoSG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f1b907e610da6229502c6864fddeaed6513bbe372353e8fb7a12976785842d. 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/6uz1oMUboyv9m4rbeKFoSG.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/6uz1oMUboyv9m4rbeKFoSG.