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 0x1cc7166d5fd18b1c4b8e8042ee8248e84bd7dd61ae799f85e14256da66a892e7. 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/4b526a11-d057-4874-8771-e9fe3efe5bea.json and https://artists.proofprofile.net/proofs/artist/4b526a11-d057-4874-8771-e9fe3efe5bea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x919b29b5319126863e5655cab49cdcc7bcccb11ec9ddd5cafb3d0182695f9402","isrc":"USA2P2045748","name":"Mud Baby","registered_at":"2026-06-24T14:24:38Z","spotify_id":"4dLjhhNujYrPZmrNrrr48Z","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 0x919b29b5319126863e5655cab49cdcc7bcccb11ec9ddd5cafb3d0182695f9402. 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/4dLjhhNujYrPZmrNrrr48Z.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/4dLjhhNujYrPZmrNrrr48Z.
Adderall (Corvette Corvette) [feat. Lil Uzi Vert] - Remix
{"copyright_id":"0xd26adcb308ef4d7659bdf756e101e76314308b9acfc45df19942e4b152bc59c7","isrc":"USA2P1951263","name":"Adderall (Corvette Corvette) [feat. Lil Uzi Vert] - Remix","registered_at":"2026-06-04T09:06:51Z","spotify_id":"1MJP0iypb4krBFdn4wO9b7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26adcb308ef4d7659bdf756e101e76314308b9acfc45df19942e4b152bc59c7. 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/1MJP0iypb4krBFdn4wO9b7.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/1MJP0iypb4krBFdn4wO9b7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fe5b18ab2dd4d9411a357a71aa611796c46237b59313e25e0ee9cb854da4cc. 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/4msUXu5KDXwBiUnfaRkFyF.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/4msUXu5KDXwBiUnfaRkFyF.
{"copyright_id":"0x96cbc6e5ebcb3444f6d3a6be5f1553ce8ea0efa11e65f9cabcf073e82a1624d1","isrc":"USA2P2045752","name":"Beneficial (feat. Toosii)","registered_at":"2026-06-20T00:27:01Z","spotify_id":"0xHAcWB4qI8NdPVxPwgbf6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cbc6e5ebcb3444f6d3a6be5f1553ce8ea0efa11e65f9cabcf073e82a1624d1. 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/0xHAcWB4qI8NdPVxPwgbf6.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/0xHAcWB4qI8NdPVxPwgbf6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385d54f19cf93e0c1c9f9b007b3576d999077d72b72ca4f7d561c4dbfb7f8f22. 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/1eFAAkv05UyRMiSIQQc1ma.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/1eFAAkv05UyRMiSIQQc1ma.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc6101479733a384871468a37f5d6bac5c0a63fd6d918d5d314cb22130c0939. 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/6B867si5cErN9i0fWb04jp.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/6B867si5cErN9i0fWb04jp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83bdfb437634f74d0baa7549098b113b992ddb85ee27651684dbe6cbc5ea09. 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/7srEG9v7czAVq8kUzoHVGG.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/7srEG9v7czAVq8kUzoHVGG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91249322d0e2ee960a2063de2aacb9cecc45a8f00b07c80aceeeac10fed2b60. 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/2XltCpuJ06fzplCP1N8Uyy.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/2XltCpuJ06fzplCP1N8Uyy.
{"copyright_id":"0xf231689bf77d4cd43bcd14ef35f1e4f61575af0b2f20f425239e92e25b097adf","isrc":"QZES92273643","name":"Who Next Anthem","registered_at":"2026-06-09T07:53:07Z","spotify_id":"3hHjDKJx0AAvbmtNVdCj4n","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf231689bf77d4cd43bcd14ef35f1e4f61575af0b2f20f425239e92e25b097adf. 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/3hHjDKJx0AAvbmtNVdCj4n.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/3hHjDKJx0AAvbmtNVdCj4n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99edd72b000ba7291b2f10e95c0e13652398bce1b2ff447f8b7425d6c7e22169. 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/4ooLeGJxmJ89FwaqojgI0D.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/4ooLeGJxmJ89FwaqojgI0D.
{"copyright_id":"0x63c470aaa64f4c6c53315c4c0dcbb7be0929e0b09b2e86d6a258b83766c4a1f8","isrc":"USUYG1372837","name":"Kiss & Make Up? (feat. Luh Kel)","registered_at":"2026-06-10T16:02:38Z","spotify_id":"5pFpEEunz0VZl9wsJKq6Ct","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c470aaa64f4c6c53315c4c0dcbb7be0929e0b09b2e86d6a258b83766c4a1f8. 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/5pFpEEunz0VZl9wsJKq6Ct.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/5pFpEEunz0VZl9wsJKq6Ct.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e47b4b46b71938f270aed723f0242f7099802c4723aee587adc223d09c4d92. 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/4i4BVeAl5ERdQh0If46rFT.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/4i4BVeAl5ERdQh0If46rFT.
{"copyright_id":"0x522f8d965f15e1f5513d626fb967237106a5bbee2b4fd630a5b85249ce11bb64","isrc":"USA2P2109419","name":"Designa (Corvette Corvette, Pt. 2)","registered_at":"2026-06-19T12:24:43Z","spotify_id":"3xEd1UveSxgYsrQSfTt6iU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522f8d965f15e1f5513d626fb967237106a5bbee2b4fd630a5b85249ce11bb64. 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/3xEd1UveSxgYsrQSfTt6iU.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/3xEd1UveSxgYsrQSfTt6iU.
{"copyright_id":"0xd26adcb308ef4d7659bdf756e101e76314308b9acfc45df19942e4b152bc59c7","isrc":"USA2P1951263","name":"Adderall (Corvette Corvette) - Remix","registered_at":"2026-06-04T09:06:51Z","spotify_id":"2Y3USTCETS4xbjJOzT1Icm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26adcb308ef4d7659bdf756e101e76314308b9acfc45df19942e4b152bc59c7. 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/2Y3USTCETS4xbjJOzT1Icm.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/2Y3USTCETS4xbjJOzT1Icm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385d54f19cf93e0c1c9f9b007b3576d999077d72b72ca4f7d561c4dbfb7f8f22. 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/2V799r7ICmCjVOlLkZ65MO.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/2V799r7ICmCjVOlLkZ65MO.
{"copyright_id":"0xb431625367b22e2ce931160d5840c5f580f45d9d9636b1610df2f19a646d2bf7","isrc":"USA2P2036916","name":"Adderall (Corvette Corvette)","registered_at":"2026-06-04T08:33:49Z","spotify_id":"3aAmQOxRPeKDL0HMWFA5qn","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb431625367b22e2ce931160d5840c5f580f45d9d9636b1610df2f19a646d2bf7. 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/3aAmQOxRPeKDL0HMWFA5qn.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/3aAmQOxRPeKDL0HMWFA5qn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83bdfb437634f74d0baa7549098b113b992ddb85ee27651684dbe6cbc5ea09. 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/3F5I0okbFMc6xxxiwXKk7E.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/3F5I0okbFMc6xxxiwXKk7E.