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 0x44543aca0a1b2e6d32d3080b43528ee9df037c32c055f9f499c7781dc08ae9d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a43839e7-e74b-4d60-a658-931b4c5429b8.json and https://artists.proofprofile.net/proofs/artist/a43839e7-e74b-4d60-a658-931b4c5429b8.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 0x67dfacf9dba83cb68cb1d117259593d1643c0e5702ce9da2c8d86e499282d647. 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/7LHBearI1rj48KjRiyeDqI.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/7LHBearI1rj48KjRiyeDqI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2a31df59f47ba8d622a40c7a9d3164f842376dd88830fabcb2078d66204f6e. 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/4nDytoV2JDD27wrGnsBUH8.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/4nDytoV2JDD27wrGnsBUH8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cc125df5c976f6bde053f638065a58fea655a46bca8ad47c37f86db91e8d19. 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/04vlZx56dc8Jc5wIGMXLYO.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/04vlZx56dc8Jc5wIGMXLYO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817428897c599a0781e3c6f44ffc56c572e112871e47afbedc10db05c1a55e0d. 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/49z34uYjFyIOMmMb96fADD.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/49z34uYjFyIOMmMb96fADD.
{"copyright_id":"0x6f6ab05b2eb59a60f67dc6bca1a4a151d9099a582ab149e627b379acd96d36ac","isrc":"NLSB72200518","name":"Alles moet weg","registered_at":"2026-06-23T20:36:57Z","spotify_id":"03gsbfh1aR7tNSdLZoWcNh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6ab05b2eb59a60f67dc6bca1a4a151d9099a582ab149e627b379acd96d36ac. 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/03gsbfh1aR7tNSdLZoWcNh.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/03gsbfh1aR7tNSdLZoWcNh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8d286186216e017c66054dfb214de54163c934cd65e138633724a7b49ea94c. 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/3HBKWjJdwH2soSIUxkI6uB.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/3HBKWjJdwH2soSIUxkI6uB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bbdbb23f3c7bc6934520b5a47de838a07c96e9f79243e9162d91198cb8ab35. 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/6XQ9Zt9TeabqYDffsw2nwO.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/6XQ9Zt9TeabqYDffsw2nwO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8975b4ce516687b492d06485345e25daa17389755d37d9de93a534f9fd85f6d2. 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/7iDX2hLXaiPJDFhiaSWuH9.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/7iDX2hLXaiPJDFhiaSWuH9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9114685c0234cd150471e9f2c274a1a8340e203b745c8c8042d32cdf6806af. 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/4HL7gT5PLwr153uG6Jgnvd.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/4HL7gT5PLwr153uG6Jgnvd.
{"copyright_id":"0x97b8b63c878f3ca8ea0db6427cc52c4d3aea38a8e1dbc6f6f08b9755aad0e6f8","isrc":"NLSB72200522","name":"Een prachtige relatie","registered_at":"2026-06-18T22:21:42Z","spotify_id":"1eQrKlwlzQyXNh4pjeKjTo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8b63c878f3ca8ea0db6427cc52c4d3aea38a8e1dbc6f6f08b9755aad0e6f8. 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/1eQrKlwlzQyXNh4pjeKjTo.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/1eQrKlwlzQyXNh4pjeKjTo.
{"copyright_id":"0xd8009b55f28382e342b4ce80efe96942687f4696c2fb1a73c7b31d5b42ca4a0c","isrc":"NLSB72200523","name":"Alles om je heen","registered_at":"2026-06-26T01:47:30Z","spotify_id":"3OyKf2scRLq8AkCnXjjDvu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8009b55f28382e342b4ce80efe96942687f4696c2fb1a73c7b31d5b42ca4a0c. 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/3OyKf2scRLq8AkCnXjjDvu.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/3OyKf2scRLq8AkCnXjjDvu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018f30d934b1e1e8cd9e83d4d435611110310064b2f3b367ad481a419bfb4702. 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/25tPpB0EG5dBN5qrHbZ1wr.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/25tPpB0EG5dBN5qrHbZ1wr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd812e5d7e0e43faa06a001d6887ac9c04f352f0021d3c037db126d28a4dc8e06. 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/012VxxpXwn4quWIN4F8jiQ.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/012VxxpXwn4quWIN4F8jiQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3368ca8a7ee4883c7f5603ddac8d829329cc45eb5ccc6ef3fd97648e53e054d3. 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/745PSrlcPUAxEaSUYqgi9j.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/745PSrlcPUAxEaSUYqgi9j.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0908ce0a489d5dfcc9a762153481c7d788788f6c647394822e68160d43141d86. 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/5gaqZw74gjFzg2O3EOUSAN.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/5gaqZw74gjFzg2O3EOUSAN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a09c64864fb05edcce473e9efe162054de3051762fed92140e878fcd4a19c. 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/3lpP4yXb9j3o9SjmWkgAP1.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/3lpP4yXb9j3o9SjmWkgAP1.
{"copyright_id":"0x6d6df77f6f746c9efbe7a76ba4b92d20c9089be371a28ec3fdd99d5759e07950","isrc":"NLG661500459","name":"Later Word Ik Een Zeeman","registered_at":"2026-06-09T11:23:20Z","spotify_id":"3q34VumPS0m0yIU4nEWqpy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6df77f6f746c9efbe7a76ba4b92d20c9089be371a28ec3fdd99d5759e07950. 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/3q34VumPS0m0yIU4nEWqpy.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/3q34VumPS0m0yIU4nEWqpy.
{"copyright_id":"0xb766ffe369ed477a86ac27a8d319f5c068c012ae74de5a3986fbf458360e2f50","isrc":"NLG661500460","name":"Was Ik Maar Een Robot","registered_at":"2026-06-08T15:02:39Z","spotify_id":"5rZwGqvpn4JUnYfjbSKX1H","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb766ffe369ed477a86ac27a8d319f5c068c012ae74de5a3986fbf458360e2f50. 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/5rZwGqvpn4JUnYfjbSKX1H.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/5rZwGqvpn4JUnYfjbSKX1H.
{"copyright_id":"0x9aca4a714b440fd646f85c87cd6dbe7f60421de894df676efd7355b82fd6f7e9","isrc":"NLG661500466","name":"Dat Was Gisteravond","registered_at":"2026-06-23T17:52:35Z","spotify_id":"5WnTcoUXKEIJLnAUOSW4Nd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aca4a714b440fd646f85c87cd6dbe7f60421de894df676efd7355b82fd6f7e9. 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/5WnTcoUXKEIJLnAUOSW4Nd.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/5WnTcoUXKEIJLnAUOSW4Nd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b165c03c6ba990b8d3e76d9bcfe59292cb0e575eb1d4f2a2fe2b7030bdedd1d. 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/4gltSevEmvCQ3QfayiwuPl.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/4gltSevEmvCQ3QfayiwuPl.
{"copyright_id":"0xb4ae2a09df8dfabc80cd5078b05b08e9824c963cfd3705e9a9ffb68c4257564d","isrc":"NLG661500463","name":"Linde Met Een E","registered_at":"2026-06-05T14:04:32Z","spotify_id":"6FbY2AuMFUIE5A8rCxM4Lq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ae2a09df8dfabc80cd5078b05b08e9824c963cfd3705e9a9ffb68c4257564d. 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/6FbY2AuMFUIE5A8rCxM4Lq.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/6FbY2AuMFUIE5A8rCxM4Lq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0450b6360f34cdc29749a91e639ad8873a2420f20e5df9058acea3bb5ad57dda. 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/29P7o8HVgjbzNjODBbyWWA.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/29P7o8HVgjbzNjODBbyWWA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf949828d575cbe6547e691f9192659e1bb740d00a74fb7aab1b5eb04c161d2eb. 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/7g9w5J9rOvno4HdgldsFTF.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/7g9w5J9rOvno4HdgldsFTF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527d3a057552d3b3e5c5b5b74316d218782a77c8c96c0fab1eade4377bd6ec1. 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/1YGW2pH1sv7RpCV0qaogAe.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/1YGW2pH1sv7RpCV0qaogAe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79d43139f94a2874bee069c90885a11b5c12819281a9c4363487dcec5091c1a. 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/0HxXW2rGNoyOzbyLTmAVQk.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/0HxXW2rGNoyOzbyLTmAVQk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926c2108506cd95f48bc6e9e870292fca8dc16ec65fa9197800aa48da6164084. 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/6UFSJQLnS0LIh03wLPqqrU.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/6UFSJQLnS0LIh03wLPqqrU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920c7dcc78455ac9e0acf8d127ebe73f947de673ea17ecd87106cfb0e9c4a1a2. 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/2jL1zntz4jZnRxXIcgR6hW.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/2jL1zntz4jZnRxXIcgR6hW.
{"copyright_id":"0x4fa39d68df70264640f056c916168a91c2f7fe73e81828be13e0bfdfeb9535b1","isrc":"NLG661200426","name":"Stars In Spain","registered_at":"2026-06-20T13:09:58Z","spotify_id":"2UdNosKJdQGiXzqXvyKbQF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa39d68df70264640f056c916168a91c2f7fe73e81828be13e0bfdfeb9535b1. 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/2UdNosKJdQGiXzqXvyKbQF.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/2UdNosKJdQGiXzqXvyKbQF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92696e381265be1bc41898d863b7d35a799fec7d5a6328d3146b68ec8e53351e. 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/6CRXKPJdkG29WsVkN7tJ8X.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/6CRXKPJdkG29WsVkN7tJ8X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404187323b6cd0beed3abcd49c111e6c8e5b4b518a787208cbbf6f26dd143320. 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/2mOACop4IxN40SrOPKqlHt.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/2mOACop4IxN40SrOPKqlHt.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912eff408f7960ca36b37a93837daadcb0ceb561625270a299253b59e647c01. 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/0j75WoNK7JugUkylY5kPjj.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/0j75WoNK7JugUkylY5kPjj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547ba12a222b1f17e96dda4e3481a9eda3daca87e2241cfdf01c33acf5786f9. 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/22VZaAODOl4yFeUJirqI6D.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/22VZaAODOl4yFeUJirqI6D.
{"copyright_id":"0xcfd9e644bb85c11af0c031ecaa4b7c5d5af4807889ebb3287bbc08bd9c643c53","isrc":"NLG661000205","name":"Het Maakt Niet Uit","registered_at":"2026-06-22T05:17:44Z","spotify_id":"6M0kiTRiRFP5Q3qiwK53Gd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd9e644bb85c11af0c031ecaa4b7c5d5af4807889ebb3287bbc08bd9c643c53. 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/6M0kiTRiRFP5Q3qiwK53Gd.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/6M0kiTRiRFP5Q3qiwK53Gd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dfacf9dba83cb68cb1d117259593d1643c0e5702ce9da2c8d86e499282d647. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7hEbVHKM5fYowTopd9GDCq.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/7hEbVHKM5fYowTopd9GDCq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92c63fd8bf15177d1732d8dfe38b218c7dff97e01d3b20453cc784c927ba124. 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/4VD0oeNew8Thjl9P1wjjEh.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/4VD0oeNew8Thjl9P1wjjEh.