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 0x0cf6733e629698b0021a460c5d22be8128d53efe8c5c1cc04cb532a66350ea79. 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/eeb81c6d-a9da-41c8-b88e-35f0e08b053c.json and https://artists.proofprofile.net/proofs/artist/eeb81c6d-a9da-41c8-b88e-35f0e08b053c.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 0xb934068148d93991c22076ac35cdcb83df697b1e33795c811b6b42d61d386101. 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/0N9EJGDigRjxsR1oT78DF6.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/0N9EJGDigRjxsR1oT78DF6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9318dbf7ebfa91d1c3d10db640357203b9f771712226cb195bc23178b4b119a1. 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/2xY6LthbJDDxZgv3DhJQDx.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/2xY6LthbJDDxZgv3DhJQDx.
{"copyright_id":"0x2b73c386a7aa8c191997f9853b74c8011d45de8f11b5915fe163a0eefed7e610","isrc":"QZWDE2421420","name":"Pro Bonde Ela Senta Bem","registered_at":"2026-06-18T13:36:39Z","spotify_id":"0f1OieOcAciDJGUq9TzdMz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73c386a7aa8c191997f9853b74c8011d45de8f11b5915fe163a0eefed7e610. 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/0f1OieOcAciDJGUq9TzdMz.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/0f1OieOcAciDJGUq9TzdMz.
{"copyright_id":"0x10072ad115abab5001e72cdb3a9c665dc6fcd1bcee170051521de58fb708eb7c","isrc":"BKCMX2400028","name":"Donos da Mídia","registered_at":"2026-06-17T21:31:00Z","spotify_id":"0t43Xxy5M7toH2PFGUC9qN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10072ad115abab5001e72cdb3a9c665dc6fcd1bcee170051521de58fb708eb7c. 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/0t43Xxy5M7toH2PFGUC9qN.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/0t43Xxy5M7toH2PFGUC9qN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5759427ab2d5d69e46d9b094d10763a89d06b6fe7d20a61170919ad6c06d05. 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/6KhqMaGTRyffryjnkrT4hf.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/6KhqMaGTRyffryjnkrT4hf.
Hobby das Safadas x Vai Ser No Beco Do Alto
{"copyright_id":"0x97b8808558f17fe1d81914a070d6b5ab346a601ac0a64e033314c566d955f120","isrc":"QZZEB2330209","name":"Hobby das Safadas x Vai Ser No Beco Do Alto","registered_at":"2026-06-19T11:29:22Z","spotify_id":"4jHQ6XspP626iY70fxguOA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8808558f17fe1d81914a070d6b5ab346a601ac0a64e033314c566d955f120. 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/4jHQ6XspP626iY70fxguOA.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/4jHQ6XspP626iY70fxguOA.
{"copyright_id":"0x396a74f771224df3caecfb764fb66bc55e43df29152b68c4be3b0b3dd8e4a361","isrc":"QZNJY2323910","name":"Só Lamento","registered_at":"2026-06-07T06:25:30Z","spotify_id":"0vj1lvv7mw3hTPgJsdzy4B","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396a74f771224df3caecfb764fb66bc55e43df29152b68c4be3b0b3dd8e4a361. 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/0vj1lvv7mw3hTPgJsdzy4B.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/0vj1lvv7mw3hTPgJsdzy4B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8788ebce64a4479711b2724f30e7534177cbb8f2e8efc4b5d299ada329b097c4. 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/06YFRnQWWnVwJnJGvctLOv.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/06YFRnQWWnVwJnJGvctLOv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b2a43372364d4a155a3c5555a2f707b02635f9ee19b7b1fddb6f66fc54b94. 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/2fU5KSXRVMnGNbHdj0qR4U.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/2fU5KSXRVMnGNbHdj0qR4U.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d82de3d9f66fd167eeb9b9388720c1ec03ee84b579e6c10fa14c0397881ca0. 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/7vxR5LgbW7a8meQKe4LJKf.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/7vxR5LgbW7a8meQKe4LJKf.
{"copyright_id":"0xdb16445442e1da4abcf8149f365d0293dcd6e555717e8ba0b0bb1dc680dc05a8","isrc":"BKP9L2400050","name":"Mtg Eu To Muito Mec","registered_at":"2026-06-06T04:35:18Z","spotify_id":"5K8uSLZkkyNAKwvgfURQJM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb16445442e1da4abcf8149f365d0293dcd6e555717e8ba0b0bb1dc680dc05a8. 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/5K8uSLZkkyNAKwvgfURQJM.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/5K8uSLZkkyNAKwvgfURQJM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aafa97bd4b39379141413062fbf3f459271e0046872fb880396583798a4977. 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/5Sv7CksIt5YeSg9RaWTNqa.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/5Sv7CksIt5YeSg9RaWTNqa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356ff41cc4636fb72a4232d2e78d4ce53bfeb48c9947ec0734c6e4e297299c39. 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/2XW3ioNy9xufvHHAu4vDpg.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/2XW3ioNy9xufvHHAu4vDpg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948bdcf712afed5699617f979b138133cbc7e9aad5f17c029a3eb51853ea5c15. 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/7uX2qUfvK0ftXyzGZObCyR.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/7uX2qUfvK0ftXyzGZObCyR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef41581bf72b95be409da1aa463d09154e753a0c3c3249eb97590b1a952c7193. 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/4g6AEcvbN7HEAmfLgrSbCD.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/4g6AEcvbN7HEAmfLgrSbCD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755f75651ee96454c283839c2a5c958d29609f250289ce238002450073377cdb. 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/1s1CvQqz9NKZdV2mOHETmG.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/1s1CvQqz9NKZdV2mOHETmG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f59c2540b868428fcacb383e773ade0284a304ae1a102e7e5572bd902661f24. 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/4zTi1bm9sf3UUgZszVgJzj.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/4zTi1bm9sf3UUgZszVgJzj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9729ade52918d69e50ca455fa7ad107813241e0b35abb3a8b9bf1bb74dae61d9. 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/3ImkTl2w64pV5DBTMY1A17.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/3ImkTl2w64pV5DBTMY1A17.
{"copyright_id":"0x0ee953e0cb6c38e28d54c3629d0c9fb5ec9084ba54fa60351cfbfcb8013db2ca","isrc":"BCNWM2100104","name":"Mega das Reliquias","registered_at":"2026-06-07T12:32:55Z","spotify_id":"1CHewle9JlQ892nGfgzj4i","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee953e0cb6c38e28d54c3629d0c9fb5ec9084ba54fa60351cfbfcb8013db2ca. 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/1CHewle9JlQ892nGfgzj4i.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/1CHewle9JlQ892nGfgzj4i.