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 0x2eeba525e7cabaf323e269de7901b36831aa4e998fd1efaf1fa71b4d82859195. 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/8c54eee5-b1ec-49cb-a7e8-db382daf0771.json and https://artists.proofprofile.net/proofs/artist/8c54eee5-b1ec-49cb-a7e8-db382daf0771.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 0x7fe42de468f6ad1b493a03472e0038e017284279090551ce9a65857689c50c9e. 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/0WvZZ7QmlT2ToehcE14fNB.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/0WvZZ7QmlT2ToehcE14fNB.
{"copyright_id":"0xbf6bc61bd37644324d24199ba8bf0e9e3459188549ad0de212678bd444bc2d0f","isrc":"ESUM72301626","name":"PERREO ROSSANI - Remix","registered_at":"2026-06-04T16:41:28Z","spotify_id":"6ksnSnzRToBGRCROXLd1mx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6bc61bd37644324d24199ba8bf0e9e3459188549ad0de212678bd444bc2d0f. 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/6ksnSnzRToBGRCROXLd1mx.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/6ksnSnzRToBGRCROXLd1mx.
{"copyright_id":"0xcf193a41503d6dd26d6db8f1246b5d5e5cb5c82ae25fbe68991e539ed1541e59","isrc":"ARQIH2290438","name":"Los Poderes","registered_at":"2026-06-06T17:16:00Z","spotify_id":"4sNHauNA98kFFe5xEWxtCP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf193a41503d6dd26d6db8f1246b5d5e5cb5c82ae25fbe68991e539ed1541e59. 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/4sNHauNA98kFFe5xEWxtCP.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/4sNHauNA98kFFe5xEWxtCP.
{"copyright_id":"0x6531915cb123bc482aac760ae4e08e0952a0cb1d7d2ffb2accd4ddb6931e68a4","isrc":"QZHZ62293985","name":"Pal Party","registered_at":"2026-06-08T01:08:43Z","spotify_id":"5WCQZEzgPBT1DpoP7XuQNC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6531915cb123bc482aac760ae4e08e0952a0cb1d7d2ffb2accd4ddb6931e68a4. 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/5WCQZEzgPBT1DpoP7XuQNC.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/5WCQZEzgPBT1DpoP7XuQNC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa651c82657d4235be68eb37c53e36376ee902db5aac3722e971170181f0a4891. 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/5JlZl7ASB97928PiYnQYZy.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/5JlZl7ASB97928PiYnQYZy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48c03c3b433e543470ae5cc0e6233f13a5e3b71575ccc7b6a1d73ff1417e0e7. 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/3D689eDOkt0i1lmNXZSC5N.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/3D689eDOkt0i1lmNXZSC5N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416f2cefe5057dd78c25773ad774e05866990213e1de63d604216d26582a3948. 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/17tW9vpfAqgsNmQ1CZ2UBD.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/17tW9vpfAqgsNmQ1CZ2UBD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95db38f9441df566d9e2d5ed97176c4d280f4b40cf2d9241e00c78775ed5e93f. 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/4sSdcysv7GF6pj2vH7xz1H.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/4sSdcysv7GF6pj2vH7xz1H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90911f2bb9a742e24ec2ed04abf36913214d01fe8726e82a627d9f8c0587bf. 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/5gWZp558Kh9jkOBxjwbbuC.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/5gWZp558Kh9jkOBxjwbbuC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e1af530b10280791eb07e82ea349ffedb58e2d62bcd901a729213c7d6916a1. 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/6kvptPmMVbFYGQ7LJN6UCj.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/6kvptPmMVbFYGQ7LJN6UCj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527751e1abec3687ca49ce3080a2547ce6b64605dd8965cd8cf6ef0142ece39f. 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/6cp07gWpbJTnO8lml9DoU9.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/6cp07gWpbJTnO8lml9DoU9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54a6afb065177f78f703339a319f07cc71c40433a4028cd4c9a57182c93429d. 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/7KdkWbZh3BeRct1ykMxhdr.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/7KdkWbZh3BeRct1ykMxhdr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2037f92e3c17510acc2dacb630ed2ea7e43c56bc6369156c2bc24b4426fcd0bc. 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/6fJqPqzlTMPAZwan4cbwpI.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/6fJqPqzlTMPAZwan4cbwpI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca11b220b38b6d6d27468279cf54013373d646357d566f3ed59d2d8d4b8ae78. 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/5H8A0ZyF0IfdDMJ2vGwL7I.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/5H8A0ZyF0IfdDMJ2vGwL7I.
{"copyright_id":"0x686e70daa21ae3dff08a9ea0f02720e0d7c241b2439fa8ff2db3cb91901d88fa","isrc":"ARQIH2290492","name":"Cero Fantasmeo","registered_at":"2026-06-21T09:04:00Z","spotify_id":"6Soql5NNyHU0Ms8Ex8r7n5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e70daa21ae3dff08a9ea0f02720e0d7c241b2439fa8ff2db3cb91901d88fa. 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/6Soql5NNyHU0Ms8Ex8r7n5.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/6Soql5NNyHU0Ms8Ex8r7n5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c973be11742afaab5d31ee24666275aa30a7b3570656050dabdd96658f1644. 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/1o9lKuGP8AOsUpb1UyPozh.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/1o9lKuGP8AOsUpb1UyPozh.
{"copyright_id":"0x2f41a4810f6638a54afbcb4e25781a5cd7a8951bc2717626909f2ceb2bfaf60a","isrc":"QZFZ32299131","name":"Plom Plom Rkt","registered_at":"2026-06-27T02:16:29Z","spotify_id":"2qwDpISH3dywKCRcghamT2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f41a4810f6638a54afbcb4e25781a5cd7a8951bc2717626909f2ceb2bfaf60a. 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/2qwDpISH3dywKCRcghamT2.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/2qwDpISH3dywKCRcghamT2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf157751af07d1e900e1d24541d97ff69925811ca0a25b1720532d8ecd299fe. 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/7bOqGTDWgTBkrqSTz9Apfj.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/7bOqGTDWgTBkrqSTz9Apfj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e94b81194042210c10f1a1459db97235fe0938890f1f3c6b58fc5146287dfe1. 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/0MBoBvbfVGM2jV5dzLwyB8.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/0MBoBvbfVGM2jV5dzLwyB8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74db804f6d42db47e6878908aea2407be32fec557ac55b74b8cef568c1128a3e. 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/4lPGw2hOxS8655Ppf2JGsy.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/4lPGw2hOxS8655Ppf2JGsy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f9984c11f095a546776a7998ef5ac341c40585184fac19e1f48ed0063ff4b3. 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/7oP7lRrwdQeH0MsD3uoH9C.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/7oP7lRrwdQeH0MsD3uoH9C.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91aeefccedefbc89fcd0a928ea386aff478bd70cc98096db161bf514a352074. 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/3gGEqo7JghOxoFxsidkKti.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/3gGEqo7JghOxoFxsidkKti.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078d7fc31548ebe8d3a807aa0f9257fd3384f5c71f74a2360a1bf2ce6430f8b7. 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/6PE66c1Q6q3OMoU2lVPNHA.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/6PE66c1Q6q3OMoU2lVPNHA.
{"copyright_id":"0x527751e1abec3687ca49ce3080a2547ce6b64605dd8965cd8cf6ef0142ece39f","isrc":"ARQIH2292088","name":"La Presión RKT","registered_at":"2026-06-25T14:44:48Z","spotify_id":"2JPW7VKgwVfTO9AradJ9lA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527751e1abec3687ca49ce3080a2547ce6b64605dd8965cd8cf6ef0142ece39f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2JPW7VKgwVfTO9AradJ9lA.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/2JPW7VKgwVfTO9AradJ9lA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dcc8985bf3c38932dc6995737aeeefb2cc9f441fb04537581a7b367571847b. 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/7mYmqWXIndDGEaXWEPUV0i.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/7mYmqWXIndDGEaXWEPUV0i.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64144c2f3d0602a38e19f6146f423eb2763c1ab5788ee7ddcb9e863688b0ad0e. 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/1Mdb9pSm4lQ5TtCblFX66N.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/1Mdb9pSm4lQ5TtCblFX66N.
{"copyright_id":"0x64075faafde417274b255da7ee1071c757c80293043d4edabdaea9dd991dea6d","isrc":"AR5UH2302225","name":"LOCA - Remix","registered_at":"2026-06-09T08:36:10Z","spotify_id":"3HkGk0eYTURKKTdsLkNZ5v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64075faafde417274b255da7ee1071c757c80293043d4edabdaea9dd991dea6d. 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/3HkGk0eYTURKKTdsLkNZ5v.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/3HkGk0eYTURKKTdsLkNZ5v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df1bdf51a020b8ae63fe0720c6bbd331161697a685d112a98efe66b103bbf91. 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/7kNXvpPvwN3w9QPiPUBWHg.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/7kNXvpPvwN3w9QPiPUBWHg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d4b631c604ac4c9b2fc0aef95f7bda57d2453c341f121e7f7560ceb5344a2. 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/6UFsQuvjKI3BeNwCSsGJhf.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/6UFsQuvjKI3BeNwCSsGJhf.