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 0x11f96cac73914a367835c241b4e4dd6407cd3fea66a4c4925ab7e19a04460530. 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/777b546e-df72-44d7-9e14-815c059646fb.json and https://artists.proofprofile.net/proofs/artist/777b546e-df72-44d7-9e14-815c059646fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Realidade Carcerária Direto dos Calabouço
{"copyright_id":"0x089de1f90f5c3ff71c5e179c415ea3d39ed6e2bb2fd56dcc2a7dbf2669e80232","isrc":"QZHZ52053485","name":"Favela da 114","registered_at":"2026-06-28T19:39:00Z","spotify_id":"5aXWIKlHNOLgJQk9WPhPY9","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 0x089de1f90f5c3ff71c5e179c415ea3d39ed6e2bb2fd56dcc2a7dbf2669e80232. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5aXWIKlHNOLgJQk9WPhPY9.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/5aXWIKlHNOLgJQk9WPhPY9.
St dos Funcionarios & Serra Dourada 2 - .
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7618f63d394d067f9a413a5ee99b3dccfbb23129d07219625cab0e9483ea79f1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AWtbbonCeuhDUqfwaMm0I.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/4AWtbbonCeuhDUqfwaMm0I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabace6254c082e0cf1458f67972d4cac4f5f3c356e886e663713a40ef367d831. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4RecPbUZ19kCtEs6QEboET.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/4RecPbUZ19kCtEs6QEboET.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f649460b396d6ad737f0911e3407f0aa1f1637d2c701f16f905e7b7c815294c. 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/4Vg5v1xiEzg5mhtDKjdYfI.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/4Vg5v1xiEzg5mhtDKjdYfI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7023f05f5eca42839851b2882ae322787d289aea992daa1ce899ae35d63a924. 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/0jwhq06UMna6jLlcRhqv2C.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/0jwhq06UMna6jLlcRhqv2C.
{"copyright_id":"0xe02f550ea8ed51192cf6da1d16bd5c0b80aa072c04399cde46e7457166337fd6","isrc":"QZW9L2251381","name":"Campinas Até o Coimbrão","registered_at":"2026-06-25T12:13:27Z","spotify_id":"7sIiYCqat4Fjl3k2ixq8aX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02f550ea8ed51192cf6da1d16bd5c0b80aa072c04399cde46e7457166337fd6. 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/7sIiYCqat4Fjl3k2ixq8aX.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/7sIiYCqat4Fjl3k2ixq8aX.
{"copyright_id":"0x5bcca41765603a2b086dbe402268dcccbbc138273bf1fff000c8e4431c206cf3","isrc":"QZW9L2251383","name":"Dei Minha Vida no Bagulho","registered_at":"2026-06-23T14:18:32Z","spotify_id":"7mPwzDQb4vvl7NSd1qbgDb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcca41765603a2b086dbe402268dcccbbc138273bf1fff000c8e4431c206cf3. 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/7mPwzDQb4vvl7NSd1qbgDb.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/7mPwzDQb4vvl7NSd1qbgDb.
{"copyright_id":"0x5f06b9155cba46ca42055737bd199fafdd515a112807eae6f9e4096b0abc125e","isrc":"QZW9L2251385","name":"Genera na Voz","registered_at":"2026-06-24T20:25:19Z","spotify_id":"1DQ2MGOMQfcoZX2gLfeypo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f06b9155cba46ca42055737bd199fafdd515a112807eae6f9e4096b0abc125e. 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/1DQ2MGOMQfcoZX2gLfeypo.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/1DQ2MGOMQfcoZX2gLfeypo.
{"copyright_id":"0x02e165f8ad6188ce90a18b6211b3ce161a3d05b56439544e28c6de4b24f1ddfc","isrc":"QZW9L2251386","name":"Mais um Dia Qualquer","registered_at":"2026-06-27T16:29:43Z","spotify_id":"4SJufWxJTSV9XfYsYFGNnE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e165f8ad6188ce90a18b6211b3ce161a3d05b56439544e28c6de4b24f1ddfc. 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/4SJufWxJTSV9XfYsYFGNnE.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/4SJufWxJTSV9XfYsYFGNnE.
Vai Ser Sempre Com Nós (Projeto Som de Salve)
{"copyright_id":"0xc70bfd4b12df7f9a8a66d499a76c00b0cecf5a7de029fee22f007f905fa2a8f8","isrc":"QZTVM2377971","name":"A Voz É do Sofredor","registered_at":"2026-06-24T20:24:56Z","spotify_id":"6xQxJW2msxxe2QhXl9CLw7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70bfd4b12df7f9a8a66d499a76c00b0cecf5a7de029fee22f007f905fa2a8f8. 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/6xQxJW2msxxe2QhXl9CLw7.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/6xQxJW2msxxe2QhXl9CLw7.
{"copyright_id":"0x442216320c293ee1d1d3813136253a013bd70fd9ad99e0fb2c157c7e8d1f42c0","isrc":"QZTVM2377973","name":"Apgo Comunidade Controlada","registered_at":"2026-06-24T22:17:16Z","spotify_id":"6Jv3nv7V1Hd4cazNcdFGos","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442216320c293ee1d1d3813136253a013bd70fd9ad99e0fb2c157c7e8d1f42c0. 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/6Jv3nv7V1Hd4cazNcdFGos.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/6Jv3nv7V1Hd4cazNcdFGos.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c39dd1d48926c8a446536b6c94d97698693d341042f4e41d28361edea9b4000. 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/1X0V5wTqmB59hX6MwU7LC0.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/1X0V5wTqmB59hX6MwU7LC0.
Visão Sem Compromisso pra Mim Representa Nada
{"copyright_id":"0xe8f9c50a2c17d1555d08a79a2fcbc48cba311d1947796d591b9190d80a3e9f0e","isrc":"QZTVM2377982","name":"De Goiânia pro Mundão","registered_at":"2026-06-21T09:08:30Z","spotify_id":"63BAp9N9TkjfNK0l7KbRlt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f9c50a2c17d1555d08a79a2fcbc48cba311d1947796d591b9190d80a3e9f0e. 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/63BAp9N9TkjfNK0l7KbRlt.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/63BAp9N9TkjfNK0l7KbRlt.