1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xee9167e326dc63dd1f16805deb3a2d73ca450509816f52c0d3ef0fc2a239df98. 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/cda99e9a-7d1c-4b09-9083-62bc09d7a921.json and https://artists.proofprofile.net/proofs/artist/cda99e9a-7d1c-4b09-9083-62bc09d7a921.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412d475d7063d654343d9897c0dcf850bd16a122b8b8c0510ef08d4885fabaa2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd8da81b814cb3286ac17e7858fb952e0632e27b9ab65b8b319a47132d2f609. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ae115da2a039aa2dff052763a0c86e226b978ffc7a98aa023669588849a2b7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059400070.
Gallery, Vol. 2 (Collection Spanning Half a Decade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebe5cc7cbcfc4a473a1af17d830f766bb3db1eb7c6b15a8c8758e7164c87081. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09decd44288a79a9a30ea7f4a83da2fc4fbae6d7cae0fd48c21f9f3be411b6ea. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160afa91fcfe51be8c7b12dba5acf0f7157fb5c0b13ebba8dde1c92ea1d937fb. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990ef96f2fe542d48a8f8812431fa5fb1e356d3144cf85cadf995e684c340437. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda18b7851a6c449920f90bd9777c400c1fc71d7aae9b5557379f6effbbf443d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8654184010ba4b43886d72dfaf411628563bcc7c810c49820a14adffdcfb145d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1059900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff6af66903b4290adcae29b0d176402b26bb98b975139f053054a05df7d8096. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ecc8d7c2c331bdf77fceb7a1e9530c8d3d55d8d282681f82ef84d078b26c42. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef6a172756d693de56c916c0ac3dc5b08b2150cc8fa628c9ec3b180ca3f6a5d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e321f508201964f7c5cd85675f285010919dad40cd8f4845bf4fdf0315a3ca. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1efecbbe3ed1f76bf04c6c0a0971a2157545a9f04bb7ed1835f3f5f55dac8d. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941ab1450f87cc30270b423a5ec85454abb3880fb6e6b7b747583b6839d93b6c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95629eb3f17676d6a4e059e319120939a685f72e5b573207a7af4d1c038a16. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:19:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301e35d3058106cac8ea0fdc5155b6e512ed03309dbc0e7e41fbf0a8d91e544c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e3a26ee6a3884a16ca540b52c893fc06b4493df01e54a124b5d3d68c0fb5c0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8484995e9986552c35d878dcb3c00584a5cf51901760d31800717b67f2943cb1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c50b4f02e1fc7393d14bfddf5f9d1b4984a8718ff36202cea39e035e471f63. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c33636b7f82fc60645906dcb5bd0efb9a0f36379fb96ad084f37e66190a16. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c53d121b29fc4335c573fdd8e2ca0b250f11913a3ae1c406427aa9a8494cd84. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6383dc767bae2bf14cb6aa3067454e8092eb57e22d503ccbeb5357064cdf1444. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357a88c1a7acc7bc78e3c93b4541b4b25a97cc1ca3e990341b3a3ecd1112d1e8. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d72b1a696023f7c1f4dbce497d9dbb3c33dddd827e2d680fa589bae50a16d8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c3953ad4d578427efcf89aa4ffa9c3211a421aa3d3fb3226879513c410944. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d69189fd752c02e299def5828641d83cb2d7bd2826a0a90516b6ad5483c58de. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ba0fccf986c20df37b1483b763383b8c02e757ac20d066f272e798d96ab666. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceceb83c98a8df79fdfac2cc9fb3a9cf614207013d89aca42ca59bebc6b4328d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56270048523061023a7e029d2222fdb08ca3babdadd11e11166a2bab1d70c212. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1050500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c16c8dc76c8d84e56ff04640becc407cdb828f7df1ac40a82733ab2e43c124. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1051400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602d7ab44963e0a9ddc161a70ba5c5c3f6d22e4e91782d5b435ca778a874cda. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q0819832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162d4e9a47eb0370dbcf12a6248073da8671d2b1c83bff851ec3659e73142a5b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q0819878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd40166d9ca4aefcf68f84a620cd117c329d66b75b6dd45d976a3427dfcc7c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US25L0500329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a834af9a958d1fca052935245a2bc5ce1ce71b80ac5dd37f2d45a05dfaf75ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US25L0500331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe722fa0e75a38224e96fd7b669ad7d4f010bae441f40d670a4bb4c2d7e18bc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US25L0500346.