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 0xde1fc09f624303078d58ce11e11dcb7c3f1b2d06c0c5775d75f14227b39a4c88. 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/e35d7d61-11f3-4fea-b2db-2e3ffa8e6d9a.json and https://artists.proofprofile.net/proofs/artist/e35d7d61-11f3-4fea-b2db-2e3ffa8e6d9a.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 0x2010ec586dfc69fe711a80f52bb885ed795d780efa81a3d751307cc686e3e764. 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/NO5P62328010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac71eb2e279b19f8ce5c2be08766a4e862ee8cae9e10ad8107765e4d73b6c7b. 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/GBLFP2030518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b94305c42784e1074e8ceded47953fa271efe8ed05532cf87c6fe9c269c780f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NO5P62414010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1b4d1dc6bc6a8baf3718a553efbd45ab14ec5a688c11ce07a2a472e22c1b45. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NO5P62412010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b922b4450c1c6532870e71f59945a93e75bdbc4889c7844dd9c7be71c66bc5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NO5P62308010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b1122d0d1f9c31fb4d958c5246f18d49f42f16045226fce7a69aedd517f354. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NO5P62307010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebe49bfcc5c90053b06dd1cfd964e8f27c94f4091d057d61f6b17174bb57089. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO5P62221010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9f3d57e5d3404f03b218f0b7cfab9efd7cbc8f7afc48d803b7aee2eae7643. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO5P62113010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4bf0d87bacf238f668e8a481e7c973c80106b62b9068e2936978ac60335efd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NO5P62112010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9fd773e7ba5b86a4f593293a45e9b0e1fba6439e8ab2ee11d44f142bf29b9. 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/NO5P62106010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a764a9365fa27bc76e50de6a929a6ed5cd56132680d89d0d33111d584457721. 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/NO5P62102010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b4183dbef526acae69f12e6745680810a0e22861e29be0d584baee400022ca. 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/QZNWR2039650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072acc005361c695e9aa4c907559e436d2e8163c5ae9c7d2dbd0b192f656e08. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKXN22060644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6278b8346351220aaec7b17224f4b2c42a534cba37e55b2dd9d4aa045c8b04fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEG1994896.
Midnight Madness - Fredrikstadrussen 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b04ca3d8dd63b9498687254988c41425a8ddf5bbc22697e4f5a1ef3443687c. 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/GBMA22090465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9fd773e7ba5b86a4f593293a45e9b0e1fba6439e8ab2ee11d44f142bf29b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NO5P62106010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e2a93e8796e593c889241c1228e5d23fd7307ab4100d539ef203203a56bcd2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP2002173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0527c95ffb149ae1976b878538f0eee7c66fe6e37f9d82a43a717eb9ab4a8344. 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/GBMA22126940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84bc28ab33065bf8054ce68f0d5bde1ce49217faec70941375c6455c6b983a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA62144042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe053d85f7aadb8c7fa7eb2107405636f18f0c514b8f89f775f8f6c462bd35. 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/NO5P62215010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be7e96245f2ad098019871654e674de23f79c2a841beeccf76b0935c25897e2. 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/NO5P62211010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7c76b888d9a7c15c3f98e306baa7ca576ad7855b4eb084d95b2c5d8e5b0bb8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWY2272559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8debe75e8909b903bed095b5a65a35af14d35cb776672f83ce0e8126a443b0d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO5P62223010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b50c851e64082cf0966e4a12b295f46d9d51eb77c3ec5a5813e43538f78cc8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NO5P62219010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261edc3decc4686f6b325113f9c14795d9e73047a0f75bd4282cfd36324de260. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKXN22111334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8e729a1197fccb1514f53ab9b03ca56f88e25eec63b9bb4ca72fdc847a681e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBLFP2187088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dddbbe181a512a409888cdff971e09d45d1666f0d975b2648b2f4911a4ccd6f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP1815412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb481ea8447e44886fdc66556b45c84308d7a6ee2316a5ddb71a44e54ffc9aa86. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NO5P62209010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b50c851e64082cf0966e4a12b295f46d9d51eb77c3ec5a5813e43538f78cc8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NO5P62219010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fee7d49f3682847f082e09642ad11c1600a550f2889038346adda37d6d1b07d. 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/NO5P62401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a4cb611e3e864d1705273b87792862302faa2b9f470ad55610feda7db09707. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NO5P62404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920220a8bec3438a56a7bd31b18fa79e1ff0b5ae4b9121428fc866eab62da271. 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/NO5P62407010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7826b7b9bfb860881b0a16a463dc5a9135f738f1c3ccee900aafc7edfc4dfd8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NO5P62409010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1b4d1dc6bc6a8baf3718a553efbd45ab14ec5a688c11ce07a2a472e22c1b45. 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/NO5P62412010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b94305c42784e1074e8ceded47953fa271efe8ed05532cf87c6fe9c269c780f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NO5P62414010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c6d319d5bca8a991879eb5d2982cd0415c59758de7e11064bec50f7f88ac55. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NO5P62421010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ff3edb4cbce3aeb9fdcf4455140410a39cd3b729c3ee58dacc081cbf88d21. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO5P62417010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41aa480605d54178b7762514649473617f6f217588d142510d5a456b101a9a1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NO5P62418010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fe35dbf41bbbe21c73feef53d7b4a0059d4519ccffb0524ede6b9dc5507d5. 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/NO5P62422010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069c57de2e585a6ca51cf37723507a8d3664eea984e3fc28b56471ac16c2df0f. 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/NO5P62429010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3ee05c267885d946e928a98b361660bbfb9bc6ac2bf43b2554f2041b93ef26. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NO5P62410010.