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 0xaed038543e28350cc6010e213830b27500b180f69aeecaf173d89b6241aaf5c0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15b88345-a59b-4004-9359-1729c7c3fbe9.json and https://artists.proofprofile.net/proofs/artist/15b88345-a59b-4004-9359-1729c7c3fbe9.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 0x822055dfb54dc41160a40e1329bd827d4249408b1b51e029097f94de5bdccf9c. 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/5n7r1LCMiWXwjYSyV8KjC0.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/5n7r1LCMiWXwjYSyV8KjC0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aad1f8a19110261ee0a27af72b118e615025a7e1854640564617825e90c2ec. 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/4RN5WZq4T50bsXlAAWpDzE.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/4RN5WZq4T50bsXlAAWpDzE.
Mix Campesino: La Cocaleca/El Campesino Chileno/Soy Cantor
{"copyright_id":"0xda4719fb13c3bb284d5af7f4ec2a59913b2adf8c8dfcf7e1d6ff6cb56b1f8c18","isrc":"QMFMF2028557","name":"Realidad Marchita","registered_at":"2026-06-20T18:35:51Z","spotify_id":"6bXRAGdexGECZaCQW01Z9N","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4719fb13c3bb284d5af7f4ec2a59913b2adf8c8dfcf7e1d6ff6cb56b1f8c18. 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/6bXRAGdexGECZaCQW01Z9N.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/6bXRAGdexGECZaCQW01Z9N.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9bf6a2a03fb9f6dabb88e0628c88a46ad40d3c258ef9edc13fd1b71194012a. 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/1rQVP6t2h9rIXkDr5v7Lfk.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/1rQVP6t2h9rIXkDr5v7Lfk.
{"copyright_id":"0x5d30f1ddbca00e49d3d9f5be11267a911c24ebabd71b24be0345b8432ea00279","isrc":"QMFMF2028336","name":"Huasita Linda","registered_at":"2026-06-06T00:07:00Z","spotify_id":"5Ak1Hm00DHYkFp68XWzeZe","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d30f1ddbca00e49d3d9f5be11267a911c24ebabd71b24be0345b8432ea00279. 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/5Ak1Hm00DHYkFp68XWzeZe.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/5Ak1Hm00DHYkFp68XWzeZe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5943b8d1d40d19e4b3c8ae9891e5976937fa329e360e31f9133cbc148cda7233. 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/6p4FsCeOVzXylMWBZ7qY76.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/6p4FsCeOVzXylMWBZ7qY76.
{"copyright_id":"0xbffc67a0eb6efb7bb35db301038a736f80554bb00e1d254b8b3c82a42c1b2c80","isrc":"QMFMF2028338","name":"Mix Campesino: La Cocaleca/El Campesino Chileno/Soy Cantor","registered_at":"2026-06-07T23:16:37Z","spotify_id":"7LztWt6JwrvtmIju0TJEl0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc67a0eb6efb7bb35db301038a736f80554bb00e1d254b8b3c82a42c1b2c80. 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/7LztWt6JwrvtmIju0TJEl0.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/7LztWt6JwrvtmIju0TJEl0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a580797c6e224a6210bd836c6cc7cf9602477f79bd477a82634107ce4ee9b. 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/0OkrCSxH5MLls7xzQMh7bk.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/0OkrCSxH5MLls7xzQMh7bk.
{"copyright_id":"0x4479d605151bde86efdbb034bcfdd6525f2aeb51d275a9fe14a009d74bc7e19a","isrc":"QMFMF2028340","name":"Historia de un Faenero","registered_at":"2026-06-05T14:24:21Z","spotify_id":"03mp2DUdbavl8iebGARuo8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4479d605151bde86efdbb034bcfdd6525f2aeb51d275a9fe14a009d74bc7e19a. 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/03mp2DUdbavl8iebGARuo8.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/03mp2DUdbavl8iebGARuo8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383650816b24837f9b0dfd0d7e2163d4a489f59f44c6a6223fc96d2f7019d7c. 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/2A3dLkEnfocs2CN6l5Mwrb.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/2A3dLkEnfocs2CN6l5Mwrb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4e617f56676330937b6269eac118e08647381e63fcb596a908ee638c604fde. 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/6uQhvw91Leshh082bbG2Zk.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/6uQhvw91Leshh082bbG2Zk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081fc7d020bc73977a2431be28826259debd516e39552c00f178c9ff303cc044. 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/281fTCbKUpYJfBBV3WcJ9e.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/281fTCbKUpYJfBBV3WcJ9e.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f09e9e9f6fedb1314c8d5795bc9908ccad545e9762321916696ec3d0f274b6b. 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/1aHqxpqpN3GYXZlUrHkKRr.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/1aHqxpqpN3GYXZlUrHkKRr.
{"copyright_id":"0x9086d22a4b6d7b9b42b9b249f018e37f6220ba6b7d75c121fd2a53779cbf2176","isrc":"QMFMF2028345","name":"Si Me Dices Adiós","registered_at":"2026-06-26T06:46:22Z","spotify_id":"0BVADuhKBoSKLB7OvJNUNb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9086d22a4b6d7b9b42b9b249f018e37f6220ba6b7d75c121fd2a53779cbf2176. 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/0BVADuhKBoSKLB7OvJNUNb.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/0BVADuhKBoSKLB7OvJNUNb.
{"copyright_id":"0x9f7399e1011a0f241d113c643599cf979d447b17ee0d5ca49149e0191fded2cd","isrc":"QMFMF2028346","name":"Clarito Como el Agua","registered_at":"2026-06-11T21:24:49Z","spotify_id":"14VmuJ5ugOlEdy4uqMPXBG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7399e1011a0f241d113c643599cf979d447b17ee0d5ca49149e0191fded2cd. 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/14VmuJ5ugOlEdy4uqMPXBG.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/14VmuJ5ugOlEdy4uqMPXBG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd8fd110a4f0a5597c84c35e162c93c395ee8769989e3ce0c24811761b07f55. 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/5eTx1WYHazQIyPyD6ALGh9.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/5eTx1WYHazQIyPyD6ALGh9.
{"copyright_id":"0xefd1566f1a3caf40f3f795519af409e44af6e491ae00e1ef0b3bd6833b02fd50","isrc":"QMFMF2028623","name":"Adiós Amor","registered_at":"2026-06-21T17:32:28Z","spotify_id":"7cXy0D4avRQtfiTiTOIY5f","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd1566f1a3caf40f3f795519af409e44af6e491ae00e1ef0b3bd6833b02fd50. 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/7cXy0D4avRQtfiTiTOIY5f.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/7cXy0D4avRQtfiTiTOIY5f.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f467928b30fe56b75c8af5650b278533657133bf6c18de7467f647bc872356. 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/54YykYXWaja1ERgintKg8p.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/54YykYXWaja1ERgintKg8p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a18fcc15269bf28b956d172e4961c0e62416aab40fab060ddccb4dc79937b01. 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/72f6DYNw4hf5KKycF1D426.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/72f6DYNw4hf5KKycF1D426.
{"copyright_id":"0xbfd95cd69c876f6113fcd02472f3f6158e14d5ffae414dca21cf7a9fb79cbcbb","isrc":"QMFMF2028628","name":"Qué Dolor","registered_at":"2026-06-25T06:41:38Z","spotify_id":"7LEho3hqidLCrfXG0segXH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd95cd69c876f6113fcd02472f3f6158e14d5ffae414dca21cf7a9fb79cbcbb. 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/7LEho3hqidLCrfXG0segXH.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/7LEho3hqidLCrfXG0segXH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98fe961f447066859bb2466c9b0f3c61581ce2b761a939be1aa8c03ecb3c112. 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/4mOx6RGRPrBOPOJEgk63G5.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/4mOx6RGRPrBOPOJEgk63G5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337940759512a33d86a4e090284ab265f33eb8633d797012c762473551ce9010. 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/5lLm2B65X1uF8DdrazZOpt.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/5lLm2B65X1uF8DdrazZOpt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c4d787e7a711e55cc649d8c85f9b6f1b34f8563c1e5bcc5c824bc203967432. 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/4QVUuxInQXx9ihIIBpuxX7.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/4QVUuxInQXx9ihIIBpuxX7.
{"copyright_id":"0xe4d611e70413e385412a85cb87d831d5a11712b24c0e955ed17e1b2cc471e8c1","isrc":"QMFMF2028527","name":"La Mujer Que Soñé","registered_at":"2026-06-28T05:56:36Z","spotify_id":"6jCsBnPrKX0LQcoC8ITkFD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d611e70413e385412a85cb87d831d5a11712b24c0e955ed17e1b2cc471e8c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6jCsBnPrKX0LQcoC8ITkFD.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/6jCsBnPrKX0LQcoC8ITkFD.
{"copyright_id":"0x4807f369b5f386b840cc186dff7873c26a055ac18ed90d8af8b5e9d891b64d54","isrc":"QMFMF2028528","name":"Tristes Recuerdos","registered_at":"2026-06-25T06:45:08Z","spotify_id":"1mPRUxF2fdzbA07NxlghhN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4807f369b5f386b840cc186dff7873c26a055ac18ed90d8af8b5e9d891b64d54. 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/1mPRUxF2fdzbA07NxlghhN.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/1mPRUxF2fdzbA07NxlghhN.
{"copyright_id":"0x6eda87bf9019fadf1b2cab95d9f10700e62755e793f42945bc980173cfef2aa3","isrc":"QMFMF2028531","name":"Ha Salido la Luna","registered_at":"2026-06-26T15:21:53Z","spotify_id":"0LozTM94gZJ8djumDQHUDH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eda87bf9019fadf1b2cab95d9f10700e62755e793f42945bc980173cfef2aa3. 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/0LozTM94gZJ8djumDQHUDH.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/0LozTM94gZJ8djumDQHUDH.
{"copyright_id":"0x2e43afb945512d4598ee2384f7bdf2cbe80780922417b4bbe35cc6b3f4786bd3","isrc":"QMFMF2028537","name":"Morena de Mis Amores y el Olimpo","registered_at":"2026-06-28T05:54:32Z","spotify_id":"4FMWAbUsGfz74J81REsUR1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e43afb945512d4598ee2384f7bdf2cbe80780922417b4bbe35cc6b3f4786bd3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4FMWAbUsGfz74J81REsUR1.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/4FMWAbUsGfz74J81REsUR1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7f542b9023b353dc3608e306fa576f687d1e3312d890d73da658bc233dfd2c. 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/6mjCELq0QXKs0UV8BM4f52.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/6mjCELq0QXKs0UV8BM4f52.