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 0xfdc905e4fe582bfcab83c8048cded877f978319c41e82fffa0cc85bb703efa18. 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/f2299eb4-cb06-48f8-99bf-a19b4ac2a248.json and https://artists.proofprofile.net/proofs/artist/f2299eb4-cb06-48f8-99bf-a19b4ac2a248.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xda78d15cefb64606b6767ce1ceeb160acffbb161dace03e46a917e87c087c637","isrc":"QZTPX2381222","name":"Nota Loka","registered_at":"2026-06-23T14:27:30Z","spotify_id":"0QBvCiFblNGxVutqR7FM1N","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 0xda78d15cefb64606b6767ce1ceeb160acffbb161dace03e46a917e87c087c637. 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/0QBvCiFblNGxVutqR7FM1N.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/0QBvCiFblNGxVutqR7FM1N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32e410f73840ff6e6e1081853b47705948e0aec801423af335ca48c1dc6bd6f. 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/1ogZ8ZpjVRgTuC2sPxIgWO.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/1ogZ8ZpjVRgTuC2sPxIgWO.
Forte Forte (Pa Començar O Final De Semana) [Remix]
Forte Forte (Pa Començar O Final De Semana) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666a0d997c08ad06cb27a45b8c94bdcb1eefe5ca1cbe9881adcc0c48e52b2e98. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2oTgQW4dhiygKV2YMVwfMh.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/2oTgQW4dhiygKV2YMVwfMh.
{"copyright_id":"0x260d7ae2341d590ce763a0320ea5b7d155fb676db31b8b5a7737e425e3d0ad9e","isrc":"QZHZ52235004","name":"Numero 1 - Remix","registered_at":"2026-06-04T16:03:03Z","spotify_id":"2hYDdcE3IaICpqMZOPkwkZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d7ae2341d590ce763a0320ea5b7d155fb676db31b8b5a7737e425e3d0ad9e. 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/2hYDdcE3IaICpqMZOPkwkZ.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/2hYDdcE3IaICpqMZOPkwkZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33d121dcb250ff3a0cf209da0a6f4deefde2aa3f148e0d821535d9fbc93a8b9. 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/0WAqNnAutTS2beX0Qr11tJ.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/0WAqNnAutTS2beX0Qr11tJ.
{"copyright_id":"0x288ec57fe24ba4bfe9aa4af66c1ce167fd8d8072167df0d4b6c7e53520738794","isrc":"ESA011582061","name":"Te Pienso - House Remix","registered_at":"2026-06-07T15:11:04Z","spotify_id":"4ZbRSB1y5jaqXqRcek4yWK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288ec57fe24ba4bfe9aa4af66c1ce167fd8d8072167df0d4b6c7e53520738794. 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/4ZbRSB1y5jaqXqRcek4yWK.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/4ZbRSB1y5jaqXqRcek4yWK.
{"copyright_id":"0x3eef168c3a0348eb355aeafd63da32deca276f10a47bf8aaf57f464634c37e55","isrc":"QZNJZ2116447","name":"Sou Favela (Cachengue)","registered_at":"2026-06-10T17:34:30Z","spotify_id":"50x5NEtaWHrKq12m4wGJkL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eef168c3a0348eb355aeafd63da32deca276f10a47bf8aaf57f464634c37e55. 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/50x5NEtaWHrKq12m4wGJkL.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/50x5NEtaWHrKq12m4wGJkL.
Nissa, Tibau Mascheroni Electronic Sessions 1# Serra Mode
{"copyright_id":"0x2de8ec763a2281e8b504b009a9330b060876d9c03ac6dcca43ef7830b1433333","isrc":"QZNJX2154517","name":"Nissa, Tibau Mascheroni Electronic Sessions 1# Serra Mode","registered_at":"2026-06-21T03:02:14Z","spotify_id":"2erDUFj9NrFVcHgnXOOeXX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de8ec763a2281e8b504b009a9330b060876d9c03ac6dcca43ef7830b1433333. 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/2erDUFj9NrFVcHgnXOOeXX.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/2erDUFj9NrFVcHgnXOOeXX.
{"copyright_id":"0x23f3198553ca716739a185a91a1aadf6eaa10f05368d1fcbfcc75350fbf4caf2","isrc":"QZK6Q2018502","name":"Glad You Came","registered_at":"2026-06-23T16:53:27Z","spotify_id":"0xrjJT6BS4WFMKupJdD3fv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f3198553ca716739a185a91a1aadf6eaa10f05368d1fcbfcc75350fbf4caf2. 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/0xrjJT6BS4WFMKupJdD3fv.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/0xrjJT6BS4WFMKupJdD3fv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157d8af19f383f62014ec2d4bdfe635b2d487dfd4fec258c272205dd1346053. 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/2YS5yEJA6zL3utToVzTjzn.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/2YS5yEJA6zL3utToVzTjzn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa16b66ae10357bf0ce8ca298d3a6fd7dccfda321952bcea6d89face3903dc04. 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/3wlpJC2MVLvwvcqFs1ZHyx.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/3wlpJC2MVLvwvcqFs1ZHyx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a50c80c3f469f340cb5678f7a9e1f265a67eab4813a821fbc77811183422b4. 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/00xzYaiHc7qPiVDAbV4PAI.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/00xzYaiHc7qPiVDAbV4PAI.
{"copyright_id":"0xdc14e4c0fa384b85dc73bd69639104be0aedd0c37d1721d498ae5291787c250d","isrc":"ARIXB2313434","name":"Parado No Bailão - Tech House Remix","registered_at":"2026-06-06T18:07:24Z","spotify_id":"1PeVPKcAG5Uf8QNCTnls6w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc14e4c0fa384b85dc73bd69639104be0aedd0c37d1721d498ae5291787c250d. 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/1PeVPKcAG5Uf8QNCTnls6w.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/1PeVPKcAG5Uf8QNCTnls6w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d315a37481b986fd6544f8b68fd35354aca1249f991e406e0e12a67e192cd3. 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/366X622uA2eEK2T8OE6U2B.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/366X622uA2eEK2T8OE6U2B.
{"copyright_id":"0x666a0d997c08ad06cb27a45b8c94bdcb1eefe5ca1cbe9881adcc0c48e52b2e98","isrc":"USDA12303944","name":"Dandole - Remix","registered_at":"2026-06-07T15:11:26Z","spotify_id":"1Ng0Qvogdis1g6l3N9gbqQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666a0d997c08ad06cb27a45b8c94bdcb1eefe5ca1cbe9881adcc0c48e52b2e98. 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/1Ng0Qvogdis1g6l3N9gbqQ.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/1Ng0Qvogdis1g6l3N9gbqQ.
{"copyright_id":"0x95a98dcfe86df3de397204e1d836492ee22c739346db4215e9dcef4cfbf8ef31","isrc":"ARY4P2400333","name":"Como Se Siente","registered_at":"2026-06-08T22:34:37Z","spotify_id":"638iGklpZ4wBKhqT7QCzAF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a98dcfe86df3de397204e1d836492ee22c739346db4215e9dcef4cfbf8ef31. 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/638iGklpZ4wBKhqT7QCzAF.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/638iGklpZ4wBKhqT7QCzAF.
{"copyright_id":"0xf45fef3d7f21790077b5b089d4a7bb2fe5353cc4d1a7b9a97fc75e00c305cd5b","isrc":"ARY4P2500115","name":"Tengo Una Baby (Remix)","registered_at":"2026-06-20T18:50:11Z","spotify_id":"4FGfpO5Vygx8Z1Rh95QNkN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45fef3d7f21790077b5b089d4a7bb2fe5353cc4d1a7b9a97fc75e00c305cd5b. 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/4FGfpO5Vygx8Z1Rh95QNkN.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/4FGfpO5Vygx8Z1Rh95QNkN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707c2930b9d0571564267ae5d0944475d338e41af3b97834025bc815acebfc3b. 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/5FNNEEByP2PK8DOXLhklx1.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/5FNNEEByP2PK8DOXLhklx1.
{"copyright_id":"0x4c3be5538a16d282d75493b3b9b756fddd5a3e68ffac95ab548aa8ff48548520","isrc":"ARY4P2400568","name":"Fronteo - Tech House","registered_at":"2026-06-08T22:37:28Z","spotify_id":"1jzWFQ2YvHEb0FDNCHSXeA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3be5538a16d282d75493b3b9b756fddd5a3e68ffac95ab548aa8ff48548520. 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/1jzWFQ2YvHEb0FDNCHSXeA.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/1jzWFQ2YvHEb0FDNCHSXeA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2909f81dc2430e7ba869b8061a001c07240cf32c3d38e4962d5c9d1ab6e42bd9. 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/0GDNJFsuSuHFIe90arh75l.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/0GDNJFsuSuHFIe90arh75l.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe992652a5c701163364a6f322521e9cbe4a41ba60a622164631e3a01e1ce9d85. 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/3QV47pQNXA4ggSTC4N2pZ0.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/3QV47pQNXA4ggSTC4N2pZ0.
{"copyright_id":"0x2a0a299ad495b224242fd4eadc75f99d957138254a7ec9b6efdd557eb481a3df","isrc":"DGA082437592","name":"No es amor - Radio Edit","registered_at":"2026-06-06T05:58:47Z","spotify_id":"4Xxl9JrV2pDSlJl5mCBFg0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0a299ad495b224242fd4eadc75f99d957138254a7ec9b6efdd557eb481a3df. 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/4Xxl9JrV2pDSlJl5mCBFg0.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/4Xxl9JrV2pDSlJl5mCBFg0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6ec6e235e682771a981161ee0f63b915056c4a1a1a822d651905e530bd51db. 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/1qr8AbvuZOkmO1Q0Q9vrgv.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/1qr8AbvuZOkmO1Q0Q9vrgv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9dec98e625ad98f5594c05cf8c782b42b7fe0e5f1db385a0d67e3528c5ad25. 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/33r4x14LD9xIwKRMuqL7eV.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/33r4x14LD9xIwKRMuqL7eV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c18cf01335e73195d8aed731a731789bf161b1c672c4c4cfb7fd232741a7df8. 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/2kwvzdvv3r9H1JN6nmu1Gj.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/2kwvzdvv3r9H1JN6nmu1Gj.