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 0xe05e1f420693b7ac6b9e70420a010c64ef60c7259941faece9eff59a1d336831. 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/8a3fd750-be88-497f-ba89-af9506a6932a.json and https://artists.proofprofile.net/proofs/artist/8a3fd750-be88-497f-ba89-af9506a6932a.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 0x212eec5e70e016c127162bccfac4699a5182599913e8c660e91121335a9d20a2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Cq2XHE75dhe8dxvP4O6lN.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/5Cq2XHE75dhe8dxvP4O6lN.
{"copyright_id":"0xe55928863189f5e8e8ab3d51aae9266aa41e533abd44fa40f4d9179808afdd21","isrc":"QM6MZ2261664","name":"Yo Soy del Barrio","registered_at":"2026-06-05T12:34:26Z","spotify_id":"7DaoUON78TxJlOcNtHgaT2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55928863189f5e8e8ab3d51aae9266aa41e533abd44fa40f4d9179808afdd21. 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/7DaoUON78TxJlOcNtHgaT2.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/7DaoUON78TxJlOcNtHgaT2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802082e0861eb6145b179ce258647c430e84d210f90c0b0ee7b6757eef319a06. 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/6862W0OJNwhytsXSpCQZ5k.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/6862W0OJNwhytsXSpCQZ5k.
{"copyright_id":"0xbe92627d32a26b8aeacfb7e7612b8f527e677cc56a07daf0ade36900fd6611a1","isrc":"AUGBT2353802","name":"Ke se reporten - Remix","registered_at":"2026-06-05T08:39:41Z","spotify_id":"6rEVnzEk8woYm29fv0kixn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe92627d32a26b8aeacfb7e7612b8f527e677cc56a07daf0ade36900fd6611a1. 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/6rEVnzEk8woYm29fv0kixn.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/6rEVnzEk8woYm29fv0kixn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa9aefed15db914cf72d81b8f5263362a76a3c069242634c065756227d0ced9. 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/3HSLvgIoogy5sKK6J81Kzu.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/3HSLvgIoogy5sKK6J81Kzu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00ee70a1879addd7ec3a81a6b14d9c358ae6a7df868204553f4605408c7479d. 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/2z6D5O04qfkG7NR1s2CJ75.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/2z6D5O04qfkG7NR1s2CJ75.
{"copyright_id":"0xf6af9be1829da8d1ab071da629caa67188928db7f979729eb9e3ad34f8342b4b","isrc":"US7VG2415186","name":"Salimos Pa la Disco","registered_at":"2026-06-11T10:11:39Z","spotify_id":"4z4jJIU6DQKXEW1RPdY2T9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6af9be1829da8d1ab071da629caa67188928db7f979729eb9e3ad34f8342b4b. 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/4z4jJIU6DQKXEW1RPdY2T9.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/4z4jJIU6DQKXEW1RPdY2T9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48de1027ec15997c6cd3284af32a19cf7bda812aad89d9b6f3f4e0d51b67b9c9. 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/5NvbkwL6r96Auhaa621dXW.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/5NvbkwL6r96Auhaa621dXW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a6f7e0075248559de099bdf4aae274431fda238aef0aca8b4435b0888392fb. 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/7HBfy91fUKNz5ldpPcDczK.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/7HBfy91fUKNz5ldpPcDczK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f91647f5117c833bc2634a44974dcea5c701f20f6e95e51784e7d4e914015. 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/3PocEWItMFKousmap1eiLL.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/3PocEWItMFKousmap1eiLL.
Turro Diferente (feat. Omar Varela, Preciau)
{"copyright_id":"0x8849f397ddb5d300fda17608dcb72f0e6e5aeb9863a0bbf559477a23967d31be","isrc":"AR5UH2301359","name":"Turro Diferente (feat. Omar Varela, Preciau)","registered_at":"2026-06-04T09:43:08Z","spotify_id":"2EZdlAbCWobkRJUj248m4S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8849f397ddb5d300fda17608dcb72f0e6e5aeb9863a0bbf559477a23967d31be. 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/2EZdlAbCWobkRJUj248m4S.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/2EZdlAbCWobkRJUj248m4S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b85542c89851f627a4289a9b60ab8054d80136157ab9327db0dd65ce770ea9. 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/35X6CPF2Qwn0SCfVO7xDaw.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/35X6CPF2Qwn0SCfVO7xDaw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a077e77fea70b9a81cb329032839761fe32c760b37624de555d9d25ff63b78. 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/4vo13Hv6bYh4RcXsxaWLZJ.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/4vo13Hv6bYh4RcXsxaWLZJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965e10f5040247411760e2c9a95321691ad92bde1afaf28e7e5c95f5e991895e. 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/70WX5MsuU73v3pZF4xVcd2.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/70WX5MsuU73v3pZF4xVcd2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd198f61c2e150c03c662d49f6444fd5feb3c88881326869b592c5392e495cb9a. 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/1oaY5Z1dDLd4BkdGw8hjJu.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/1oaY5Z1dDLd4BkdGw8hjJu.
{"copyright_id":"0xdeb8e3693ef5c1dd293115a4e8571dfc2c8fcb3f3c7c0be5c124283846569a8d","isrc":"QZGLS2314303","name":"El Motorcito - Remix","registered_at":"2026-06-04T05:50:00Z","spotify_id":"2vEY9OdhUx7oFOjcbmIrwt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8e3693ef5c1dd293115a4e8571dfc2c8fcb3f3c7c0be5c124283846569a8d. 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/2vEY9OdhUx7oFOjcbmIrwt.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/2vEY9OdhUx7oFOjcbmIrwt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdc8ca7495cdd58a15f7829ba5524dcfe2f02a1eea72f81bc777720d93d7414. 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/3NYn3VELckOn3Hnh2FQBgR.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/3NYn3VELckOn3Hnh2FQBgR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9602580df4bc94bc94c542168e8656d3c7161c6337b13fc641fe673d4110e85b. 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/7IJZyhrttBYZAIwQxmPxuj.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/7IJZyhrttBYZAIwQxmPxuj.
{"copyright_id":"0xa30ee05be1a246c87ea47cec1bb5fee4c02d8aa834c6b5dc879a74cb3a9394d6","isrc":"QZW9L2346202","name":"El Super Junte Rkt","registered_at":"2026-06-01T21:35:18Z","spotify_id":"1dtFrIzrr4DJZOHHESVwbt","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30ee05be1a246c87ea47cec1bb5fee4c02d8aa834c6b5dc879a74cb3a9394d6. 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/1dtFrIzrr4DJZOHHESVwbt.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/1dtFrIzrr4DJZOHHESVwbt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fa24dcd72a6ed7aa4f756200095ba879f126d5fff9795a44a8a5763aa66ff7. 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/0OsOZCt48fvEZB7JQsr3ZI.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/0OsOZCt48fvEZB7JQsr3ZI.