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 0x8cdb247651cf58480a55ee3a410903770d331208cd5d0b21a93ad610970a8742. 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/473d96a4-37aa-4529-b9a7-3e18efa97774.json and https://artists.proofprofile.net/proofs/artist/473d96a4-37aa-4529-b9a7-3e18efa97774.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 0x611112fe6c27d657f373d44605594983484be1c76ce27ac96f399765b49d2df9. 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/4U7ebN4uZAOh7qJOpBtuK7.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/4U7ebN4uZAOh7qJOpBtuK7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f74c80322a0af89cecbe8ee0ff1a1b0116348a8020e3e36a43f4c0a9dd69a21. 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/1GgDBwkDVJmqq6CMGxBvq4.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/1GgDBwkDVJmqq6CMGxBvq4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82b64df3444d004748f140f632686313ba7ca3fd5e7f0243def4379db65b6ce. 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/3O9Dg2s95zHUtz13x4WPn5.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/3O9Dg2s95zHUtz13x4WPn5.
{"copyright_id":"0xa0d8dd2bfdf92d3a028de4f0fba8cb4d06d678812de31a11a7d68e3c042e49d7","isrc":"BX7P32301169","name":"Hoje É Onde","registered_at":"2026-06-19T23:26:09Z","spotify_id":"6xvk6c6qGh5i3nnkjU5sqf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d8dd2bfdf92d3a028de4f0fba8cb4d06d678812de31a11a7d68e3c042e49d7. 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/6xvk6c6qGh5i3nnkjU5sqf.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/6xvk6c6qGh5i3nnkjU5sqf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615d7122e39215ad94483bd64282affc928e6f0419b51846ede5ea28a2c4b781. 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/6Xzoo0Li05TbuZGPfGuWPG.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/6Xzoo0Li05TbuZGPfGuWPG.
{"copyright_id":"0x78e19b892aa747f3ccb4f74356d189161eaca59d67d14c682c5b9021cb178cf6","isrc":"BK9HO2500020","name":"Desacato na Quebrada","registered_at":"2026-06-11T23:48:33Z","spotify_id":"6TXsFcOeV7Now4CrfZY6Z8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e19b892aa747f3ccb4f74356d189161eaca59d67d14c682c5b9021cb178cf6. 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/6TXsFcOeV7Now4CrfZY6Z8.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/6TXsFcOeV7Now4CrfZY6Z8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5bdea66f19c1bf351863b22af38fff79aed9c562779030614f0a5b94f61ac2. 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/72Ls2b65q1dWi38gj73D0a.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/72Ls2b65q1dWi38gj73D0a.
{"copyright_id":"0x480fd43999b5ffb19335c54d9c311137abee395c793bafaeeaf272f1aeef093e","isrc":"BK6C12400005","name":"O Dia Chegou","registered_at":"2026-06-20T06:26:48Z","spotify_id":"6pxve5UiZSwash2hRDm7zh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480fd43999b5ffb19335c54d9c311137abee395c793bafaeeaf272f1aeef093e. 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/6pxve5UiZSwash2hRDm7zh.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/6pxve5UiZSwash2hRDm7zh.
{"copyright_id":"0x591e9f4200eca09a2f0efa2b76745f62833ec96ab7622d16e4141ee6ddedb57f","isrc":"QZW9L2473006","name":"Acordei Bem Cedo 2","registered_at":"2026-06-07T13:39:34Z","spotify_id":"7MpCWe4SR6SM9iMD3muvzk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e9f4200eca09a2f0efa2b76745f62833ec96ab7622d16e4141ee6ddedb57f. 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/7MpCWe4SR6SM9iMD3muvzk.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/7MpCWe4SR6SM9iMD3muvzk.
{"copyright_id":"0xebfb757ba481edbfd195af887eba87592ecd0023baa48e554d98c4c8b81fd265","isrc":"BCE7P2401105","name":"Dinheiro é Sujo","registered_at":"2026-06-09T17:48:20Z","spotify_id":"5tlOk12R2hRxP8LDH1EU5J","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfb757ba481edbfd195af887eba87592ecd0023baa48e554d98c4c8b81fd265. 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/5tlOk12R2hRxP8LDH1EU5J.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/5tlOk12R2hRxP8LDH1EU5J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2727afc4f018f7b53179ad77148b38b735abce532f1fb8007d3af215ad73e084. 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/37FHwdscbRi4ChJkb6X2Ti.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/37FHwdscbRi4ChJkb6X2Ti.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17204103c00904fdac6cb7de161e9079f1ba17af79d4782fd8435f234572e54. 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/12Sni0YQxA40rF9Nu6OiBv.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/12Sni0YQxA40rF9Nu6OiBv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b3441e1953f64cfe547ce414e7d15846ae5ea668ffad0c94f00e1365dae706. 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/2udX71KZDVz7y1yS6nlTx3.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/2udX71KZDVz7y1yS6nlTx3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de92b5a4efca6ace64ec24b621e9ef8e2f75d5825ca009550edcf3f08a7c42d. 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/5rLHvNvIXVtdsSXhuB5Ugh.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/5rLHvNvIXVtdsSXhuB5Ugh.
{"copyright_id":"0x98b3441e1953f64cfe547ce414e7d15846ae5ea668ffad0c94f00e1365dae706","isrc":"BX7P32300426","name":"Acordei Bem Cedo","registered_at":"2026-06-04T06:56:27Z","spotify_id":"0kXMyDlaPHsMJPLug6LZpI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b3441e1953f64cfe547ce414e7d15846ae5ea668ffad0c94f00e1365dae706. 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/0kXMyDlaPHsMJPLug6LZpI.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/0kXMyDlaPHsMJPLug6LZpI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804600989f01253b53ae50f2d6e523cbc7f0f8478c4e96892a6c1ee92bf50d20. 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/1sAX3ZzBCUZcUEUSivJw4x.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/1sAX3ZzBCUZcUEUSivJw4x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faff63b4479bc9a42e0cd12b553e9ff450e7b30899fa083f2900fe746e2a7f3. 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/7E1NsG1DEtZI8dh3LfzLqL.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/7E1NsG1DEtZI8dh3LfzLqL.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef757334ae9d0ca87698baf5fb51e399b93767dc3814c928bee6e704ae5c838d. 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/6S0yFTVL3V87GjcpLAP8Se.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/6S0yFTVL3V87GjcpLAP8Se.
{"copyright_id":"0xbb8eb5f873118abbef16089eb1c39667d35be30b642050a03adbb4cfc01d9a1c","isrc":"BX7P32300190","name":"Mais Forte Que Eu Penso","registered_at":"2026-06-07T07:40:16Z","spotify_id":"7tVI63oMOK5M3GmJdpW6YR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8eb5f873118abbef16089eb1c39667d35be30b642050a03adbb4cfc01d9a1c. 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/7tVI63oMOK5M3GmJdpW6YR.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/7tVI63oMOK5M3GmJdpW6YR.