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 0x6f09077484d4a9cdfca47c693743841da5851e143fb2f366f66e4ba20bd7fc9a. 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/5dbe5ddf-59a2-4e13-bb55-a1948fd4978c.json and https://artists.proofprofile.net/proofs/artist/5dbe5ddf-59a2-4e13-bb55-a1948fd4978c.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 0x807cdb03ffa870faa1377d8c6cbce74690423b1b7d8b5fd2d5236753f41aa32a. 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/0fABszUFNbNq9IW503Gj8v.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/0fABszUFNbNq9IW503Gj8v.
{"copyright_id":"0xaf6d0165db328ca93272259cba56233369124b06f17e7f453a4b2f269c9d5027","isrc":"BX5EU2300034","name":"Faz um Vuk Vuk (Teto Espelhado)","registered_at":"2026-06-01T06:55:26Z","spotify_id":"64CovjRwInpOJW4PiGMprY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6d0165db328ca93272259cba56233369124b06f17e7f453a4b2f269c9d5027. 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/64CovjRwInpOJW4PiGMprY.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/64CovjRwInpOJW4PiGMprY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04191ccc0ed726c920d9e43963f7081d65c6ad387756697566e992bd930fbc83. 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/1snE820RBNNYwpqZO8ItYf.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/1snE820RBNNYwpqZO8ItYf.
{"copyright_id":"0x7cb1009ef11ceb99a55fa695dd2d5114d5fda6e71bf8e8c1f1c6cd9bf34075e1","isrc":"BXZDZ2000011","name":"Seu Jogo","registered_at":"2026-06-04T07:39:49Z","spotify_id":"5e9WIdb3KsK7r8soV41bKo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb1009ef11ceb99a55fa695dd2d5114d5fda6e71bf8e8c1f1c6cd9bf34075e1. 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/5e9WIdb3KsK7r8soV41bKo.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/5e9WIdb3KsK7r8soV41bKo.
Amor de Fim de Noite / Morena da Cor do Pecado - Ao Vivo
{"copyright_id":"0xac9aaa31467bb4f8f1251ff70f7d3c00fa3807c22ad0d03c8d7831a0e957ab06","isrc":"BX5EU2200014","name":"Amor de Fim de Noite / Morena da Cor do Pecado - Ao Vivo","registered_at":"2026-06-01T09:01:50Z","spotify_id":"4WBuYFw26LcnSuScYQiVNH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9aaa31467bb4f8f1251ff70f7d3c00fa3807c22ad0d03c8d7831a0e957ab06. 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/4WBuYFw26LcnSuScYQiVNH.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/4WBuYFw26LcnSuScYQiVNH.
{"copyright_id":"0xfd4908b318a6f5dd9e462e8da40ad46b0de70c8728c08e79b7f65941a2b8dec4","isrc":"BRQGF2200008","name":"ME DEIXA LEVE","registered_at":"2026-06-05T16:07:28Z","spotify_id":"15rvuKTXwIIdrCNJn2MDKJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4908b318a6f5dd9e462e8da40ad46b0de70c8728c08e79b7f65941a2b8dec4. 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/15rvuKTXwIIdrCNJn2MDKJ.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/15rvuKTXwIIdrCNJn2MDKJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e385440df41cbb4ec51a23ab6895330d8e71584744980f0f192bbdcfd28f657. 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/303JvZyo3ByOsQyEFqwDBO.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/303JvZyo3ByOsQyEFqwDBO.
{"copyright_id":"0xe7ef7bd1d2d5e2f495239984c69de2b5609c47c583af185d6a8cfb5789ecd222","isrc":"BRWRT1900064","name":"Tão Diferente - Ao Vivo","registered_at":"2026-06-06T02:41:15Z","spotify_id":"1lBExmmVC1MrGA1soFgPGX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ef7bd1d2d5e2f495239984c69de2b5609c47c583af185d6a8cfb5789ecd222. 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/1lBExmmVC1MrGA1soFgPGX.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/1lBExmmVC1MrGA1soFgPGX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4474f6842a67862c741625a9cbd3a734acd3331dba0f8be92fa1e43f1bb983ea. 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/19BGfZ8SqwOEafINDKiax8.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/19BGfZ8SqwOEafINDKiax8.
{"copyright_id":"0x826c1ab144196c3492da96c9e0cc1d5b7bc3a532260747079131f8b0816fef8c","isrc":"BRT3O1800092","name":"Te Encontrei - DENNIS Remix","registered_at":"2026-06-20T21:47:08Z","spotify_id":"5yFxdO4SHf4vUNUDMvHFEY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826c1ab144196c3492da96c9e0cc1d5b7bc3a532260747079131f8b0816fef8c. 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/5yFxdO4SHf4vUNUDMvHFEY.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/5yFxdO4SHf4vUNUDMvHFEY.
{"copyright_id":"0xedc04f718914e24edba28d248d48de08431a5bafb84290f738e656c35f311463","isrc":"BRT3O1800085","name":"Seja Bem Vinda na Gaiola - DENNIS Remix","registered_at":"2026-06-20T21:51:22Z","spotify_id":"4DbdMncLaMp6wChB8FEI1m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc04f718914e24edba28d248d48de08431a5bafb84290f738e656c35f311463. 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/4DbdMncLaMp6wChB8FEI1m.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/4DbdMncLaMp6wChB8FEI1m.
{"copyright_id":"0x1a5c5ca0015e480bbcf43029b8d46e5d8e6b53b3cef71bbb7c34df154a743cc9","isrc":"BRT3O1800081","name":"Medley da Gaiola - DENNIS Remix","registered_at":"2026-06-07T18:54:17Z","spotify_id":"7Lw2CxXKK36Bm1ZPyhVJf9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5c5ca0015e480bbcf43029b8d46e5d8e6b53b3cef71bbb7c34df154a743cc9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Lw2CxXKK36Bm1ZPyhVJf9.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/7Lw2CxXKK36Bm1ZPyhVJf9.