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 0xa4a5dbd543aefbf7ee74a97c4ecdced2592233bf3abb936061aa63323558f5a6. 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/a7499f57-8d96-4b71-ad54-a95d862e44d1.json and https://artists.proofprofile.net/proofs/artist/a7499f57-8d96-4b71-ad54-a95d862e44d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xbcc3683bb87ebf173f5a42ab59a36b05e009eb450bc4862914113c5493beefe7","isrc":"ESA011958985","name":"Ojitos Verdes - En Vivo","registered_at":"2026-06-09T09:03:22Z","spotify_id":"5YvpaJXyxe1tA3qQfC5nwM","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 0xbcc3683bb87ebf173f5a42ab59a36b05e009eb450bc4862914113c5493beefe7. 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/5YvpaJXyxe1tA3qQfC5nwM.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/5YvpaJXyxe1tA3qQfC5nwM.
{"copyright_id":"0xcb339bb6b4e48bf45ee7a236b30c4546ec885a0de429c7f652161844d2bc96a7","isrc":"ESA011958986","name":"El Cantador - En Vivo","registered_at":"2026-06-18T03:12:41Z","spotify_id":"1Ng8embZR2KStDzXtIdcJM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb339bb6b4e48bf45ee7a236b30c4546ec885a0de429c7f652161844d2bc96a7. 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/1Ng8embZR2KStDzXtIdcJM.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/1Ng8embZR2KStDzXtIdcJM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d06a20015a0fdc1f2b613caae5865be44d7bb170c3518c4c66c210322cc977. 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/04lMCdJdOSgeaDAPUHZQrF.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/04lMCdJdOSgeaDAPUHZQrF.
{"copyright_id":"0xbacbccf13606b53e865136f88d246f42834e0f9930fbc17d4d9f20b3c24d76c5","isrc":"MXB952400050","name":"El Muchacho Alegre - En Vivo","registered_at":"2026-06-21T06:12:36Z","spotify_id":"23S2juGXmfm6QLZNRnMUxO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacbccf13606b53e865136f88d246f42834e0f9930fbc17d4d9f20b3c24d76c5. 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/23S2juGXmfm6QLZNRnMUxO.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/23S2juGXmfm6QLZNRnMUxO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ffcdd75a5ac60234674665470f93fccce57134861475cf83a503d167c3d659. 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/235cjAJiKCeGP1VgVsggmN.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/235cjAJiKCeGP1VgVsggmN.
{"copyright_id":"0x9da78a9b3425840bd8dc93b551b540bf9404ef2fc1717278154ce32ef9d2560e","isrc":"MXB952400056","name":"Según Tus Labios - En Vivo","registered_at":"2026-06-21T06:16:06Z","spotify_id":"7jcbieXyTh4ujNXGg0L3vq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da78a9b3425840bd8dc93b551b540bf9404ef2fc1717278154ce32ef9d2560e. 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/7jcbieXyTh4ujNXGg0L3vq.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/7jcbieXyTh4ujNXGg0L3vq.
{"copyright_id":"0x34a28f31854dc36f6ee8446500ba94b241aeaade2faf0ec717e3169c91d10541","isrc":"MXB952400058","name":"Árboles de la Barranca - En Vivo","registered_at":"2026-06-24T16:48:52Z","spotify_id":"1jZiAjRtopUbXT7dk9tlcA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a28f31854dc36f6ee8446500ba94b241aeaade2faf0ec717e3169c91d10541. 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/1jZiAjRtopUbXT7dk9tlcA.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/1jZiAjRtopUbXT7dk9tlcA.
{"copyright_id":"0xa67a8b1580270e5c17c3eae28fc93dc61327a92281dfa05ee15f817cffe16a58","isrc":"MXB952400061","name":"Disculpe Usted - En Vivo","registered_at":"2026-06-24T16:48:44Z","spotify_id":"0bCRuJSlev1eiukysqXFEr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67a8b1580270e5c17c3eae28fc93dc61327a92281dfa05ee15f817cffe16a58. 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/0bCRuJSlev1eiukysqXFEr.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/0bCRuJSlev1eiukysqXFEr.
{"copyright_id":"0x56a84f9c79df6427d3e23dba3136d892a154aee27f78211e79b366a11df8978c","isrc":"MXB952400065","name":"Antes De Que Te Vayas - En Vivo","registered_at":"2026-06-23T09:48:30Z","spotify_id":"7HdF7aqVt5GZow9mgAAeJe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a84f9c79df6427d3e23dba3136d892a154aee27f78211e79b366a11df8978c. 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/7HdF7aqVt5GZow9mgAAeJe.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/7HdF7aqVt5GZow9mgAAeJe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec21443523b4c63052e0e6cfe83ad947fdbb8c852242c88efb1e9ab3fa883634. 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/0WottFTF78S6yAsR7iohOJ.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/0WottFTF78S6yAsR7iohOJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33417bb1e88e692068f54009eaf26cf0ba5129c11f180af42eb56c398c9cd5ba. 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/5DtMbSb5c8Ov0ahaSRKn2Y.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/5DtMbSb5c8Ov0ahaSRKn2Y.