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 0x5d05fc08c6cdd6d4b89f181dcb3c03098a396fdda6745eec4c8b6e49e740298d. 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/2f71af68-1498-452e-bc92-fca03dd19f83.json and https://artists.proofprofile.net/proofs/artist/2f71af68-1498-452e-bc92-fca03dd19f83.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 0xb87496cb37319876b0b9308f6c94f68c6ad2e558f66d7f580b9a30be3fbc3358. 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/4kUz7FGsNhOWD08v0gsXiM.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/4kUz7FGsNhOWD08v0gsXiM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89744213e3c5e833d02ed1365c2cc55a34cdf2671243ada7942099edc0062769. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Mr4z0ayfovjqav0X660GO.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/7Mr4z0ayfovjqav0X660GO.
{"copyright_id":"0x7ccb425bb05a62e88087bb1c64abcbfa5e8f37b34814d874a0a03d6baf91dc09","isrc":"USCGJ1578528","name":"Intro (Naci en el Sur)","registered_at":"2026-06-25T19:55:19Z","spotify_id":"3tnXSJ1f0E4M8R8npzkpQf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb425bb05a62e88087bb1c64abcbfa5e8f37b34814d874a0a03d6baf91dc09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3tnXSJ1f0E4M8R8npzkpQf.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/3tnXSJ1f0E4M8R8npzkpQf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696cafb5d0e62aab3036096b936c180038f20a8112e7967547a30fd5131eb371. 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/7CJQYbkUYe00Qvfqne1B1A.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/7CJQYbkUYe00Qvfqne1B1A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7f744d902220af67d35b1805da96cc7c904dce64f6f20f2ecd03beab10e4a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0nKiT2ZiSn0L83oL1JX3HN.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/0nKiT2ZiSn0L83oL1JX3HN.
Serpientes y Gallos Negros (feat. El Ser)
Cypher (feat. Fuistos Family Group & Fianru)
{"copyright_id":"0x452a37ceb89271d89071eff6353cf6f520900b2b351d1a5fbef9fc3f4a20788a","isrc":"USCGJ1578534","name":"Cypher (feat. Fuistos Family Group & Fianru)","registered_at":"2026-06-19T11:13:32Z","spotify_id":"2DBy0XOQsduq42YE3u4ctM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452a37ceb89271d89071eff6353cf6f520900b2b351d1a5fbef9fc3f4a20788a. 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/2DBy0XOQsduq42YE3u4ctM.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/2DBy0XOQsduq42YE3u4ctM.
{"copyright_id":"0xa804193f3176f1ee51656ac5bcd6358ed91c846e488bcd21917d1c3c5a2c13f9","isrc":"USCGJ1578536","name":"Perro de Ciudad (feat. Fianru)","registered_at":"2026-06-22T00:57:35Z","spotify_id":"3HWTBwp6eny3s5xWUfGRo9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa804193f3176f1ee51656ac5bcd6358ed91c846e488bcd21917d1c3c5a2c13f9. 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/3HWTBwp6eny3s5xWUfGRo9.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/3HWTBwp6eny3s5xWUfGRo9.
{"copyright_id":"0xf1832f7b8a65805996463b1a5df7bd377d461e30bbc1bd54a8a013d940a6bb4c","isrc":"USCGJ1578541","name":"Onetwo (feat. Nahue MC & Nobewan)","registered_at":"2026-06-08T12:04:03Z","spotify_id":"4c9pI1ACtZqN0iuQyQlSaS","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1832f7b8a65805996463b1a5df7bd377d461e30bbc1bd54a8a013d940a6bb4c. 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/4c9pI1ACtZqN0iuQyQlSaS.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/4c9pI1ACtZqN0iuQyQlSaS.
Cuando Sea Nesesario (feat. Juanito Flow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57857ce991dc30874a2c2ea2e0d141b3c6759b0d395c27872f22141902022723. 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/6xSEj1ZImKbMlBCZkGOB5i.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/6xSEj1ZImKbMlBCZkGOB5i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c2a8edb948a9853630abf9efb7587c1f4942215069358f82de0c1295e71f0. 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/285bV4qSFZDqLFLkfPSdOT.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/285bV4qSFZDqLFLkfPSdOT.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a57bcdb2a77a2f771f8660c790156c3b1f1dbbcee8b3a89bd4c4b155215ee. 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/17EuSPNp4D42CfMPKfZpCf.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/17EuSPNp4D42CfMPKfZpCf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42b1c1bb9ec78094bef25ca34a973dc9df87e7f4926afe90738ee05d100841d. 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/1RYwya4oEKfNlrST9pCp9B.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/1RYwya4oEKfNlrST9pCp9B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8acf842851d1424b695aca08e745645b222f60a410027e62926338eb3f46a9c. 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/0TE8tFsmg8YlqJnv9SbNfK.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/0TE8tFsmg8YlqJnv9SbNfK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a755d55c4c23cc93ed28d8af37dd9e8f813735bfb28d6d6e262de492e40849. 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/3ZggUiqSohUsKMihEHhg5d.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/3ZggUiqSohUsKMihEHhg5d.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f19d82b2cb396b5098862434ee6e81322e20d6e3ea720e0a236ad524ec1fab. 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/7gDzi7LxUDXEeeRHQjP2vk.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/7gDzi7LxUDXEeeRHQjP2vk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866af9a7807b81c5fa57f1aab47e2c12f8307a9533588ccb9acc168127fc6481. 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/5R8xkaUeaiq213J6lN63dw.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/5R8xkaUeaiq213J6lN63dw.