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 0x70fbb246d6fef2d1ed665ecd7147332119d95bd6ee35be187c17f0bab654b4e1. 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/3d4a938d-35be-464c-a146-7fc91eea8ee3.json and https://artists.proofprofile.net/proofs/artist/3d4a938d-35be-464c-a146-7fc91eea8ee3.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 0x8712b6653051e7e28d9f8d5436de7906c866e08992b99ce60c85e02fae74aa0a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUYG1244968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf26d79067362984f83376ebdd45e9d9515b4bfb4a8efaf05aa465c8d5e6f658. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USUYG1285894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601d05217276adcc1eb13feea01ebbfb01c92e75ffb13cf715049eee6eac628c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:21Z), 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/QZNJX2075666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf098ce3ba1a4151231ba1dcb91f488d173146b1dfcecdb28627f60fdc38fe7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5AB2166581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22344c3bb26938d8bb1a51ddf94a1df5a66405a582aac514fd355d999173fcba. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZ5AB2166582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379a1992e669f757111539430e8ceb1535eb936e63a4f4af6e73065c1ef799a6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ5AB2166584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3345ba65abef3d5a3ce401eaca984ddd0e407c8b83a0b6df99aca2d564510. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US7VG2100489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e98308affbcc4edbf9a73790d9ee1b4d3938f80a258b3b046ae90df1b764db. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USUYG1388831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1321abad2c8c8e618c90fc91536e5685a04fee75ffd8e1f44dbd57b882f9764e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USUYG1388908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f1f4c69f3637769b92f59ebe17dc95888e4cfdf168a7f0c406e522e7e8c9b7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USUYG1398432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7e31adaf0017df3ac63c7e481f9c828af8e014be81c17db12335ece8fab645. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:32Z), 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/USUYG1400828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad12b215a3e29cb9c42b587e8044fa50238257b57a1587a2afef486cc3379f6. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USUYG1400834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13aff93d76ff421090526e4f4e80ee59f10cd12b545c29bfab2260dc53a214. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWDD2220643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a004516c687d8c0db029c47d923a912876df52057da70804cd28116e26397b. 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/QZWDD2271404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b956be59a83bdb47fa6492e142b4c5ed74c4e3ec60264ef400dcc7a05b6be2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:08:08Z), 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/QZWDE2240733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4b435fdb2b7ee0f67d7b485513d5b2fd56d115118bf5a6f9b5ca320447a9c0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZWDE2249120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb247e228f233c6c49a127496b91ae243e2feb0895e9dcb70a4b4796dc7a2af5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:35:00Z), 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/QZ5FN2318674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede7617bd6985dc011482fcda7f365c47e59ade525a102ee3e2a8dc7d4c4445f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZZ8A2331450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ae7055bb736cd2e40fd5b4b3bfc61dcaaa44aa53f553e60d85b8d330a1bc61. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8A2360363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfd7faec7e72c4d506544d99986beeea80ca29962b6244554c5b1b8e645dbc1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:24Z), 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/QZZ8A2394536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70b1bcc311009fef3b8543c18dea4161eb15766e12f9d85d027f4cb566287d9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:55:17Z), 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/QZZEB2314591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d031d79ba8d793f52ed5826f9d2f0ea33aac53299d97e16c5d886ec8c9a7b60. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZZEB2363655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090960de39fa7707c2c26ee9f3e2923b1be43da196d00cdff0ff7e0e69b24903. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZEB2375166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50813183d611517e3d965da4dadac6019845c9fffde20802af1dd9853194555. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ5FN2415438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff9de18ebea0613b29b31021d446a06203a35c3fd3429536095f17931c37e69. 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/QZ5FN2415442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd585ea36a048d89d974994488031cf4df1b3bca76d3c52c6ff69d73da9a791a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ8A2414010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d83be8eb675cf11a4de6fa6ae93ac0307240e87cf2a93c8ee18117fd29a73ac. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:02:04Z), 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/QZZEC2406400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f3b9d2d7885d4a6c344a8a7edc1a947ffb4caa0caa20fa5506a5e357fd114d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZEC2482214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892872fbf3398a6bc51f4d770082d1a1b66d8514c37fff5bd4d911b90d139599. 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/USLZJ2508536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b305e58206c309c172b7826b74daaf52c7d17bac60bf3abd7795808a3d9623. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USLZJ2584160.