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 0x153e14077583a68bc079b4af18ddcf05d2ecad774833621871c78b7365d9b86a. 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/e2c24b9e-a27d-4fff-9ee6-f163c8a4c93b.json and https://artists.proofprofile.net/proofs/artist/e2c24b9e-a27d-4fff-9ee6-f163c8a4c93b.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 0x964f7c6fd98383cd37d5ca63a86e7e63384e6ae04968f72d9ba97ee07fd7a6e5. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/CA1HD0900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4159b6c52d0b01ecde5f370c6e5714f000d6de4508eff90704751b654e44a44. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CA1HD0900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dddb4f04f658d0f4822961f37baadf5af5ac8f659b5a792f1de4ca5609c81c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:35:30Z), 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/CA1HD0900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796df4f5c8504be2491d82d7c40632743fe18cba55b01ed1226b54e2907f6540. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:56:39Z), 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/CA1HD0900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a50e247556985a40b2158c5b3edc41d105a8fbc18a758dd2cf6025947d20b0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CA1HD0900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d376dc1a614d572c990f04339cf8710723ceae861da3f002544cca184a19410. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA1HD0900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6193b476472ac1a714042951a8a447a42a61858383f615b25d9d9bdb160cd1a5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA1HD1000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c2baf115be7fe31ae22f5c9ef0786cfe6924a767aea82ef795194f644a3ff9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA1HD1000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160756a01cf4ec664ae3c546b88d08c2a2148fd59396a0a0c7374621c9e9fe52. 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/CA1HD1000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c41a57d0627b8262dcc50c01a8d90677c9775a1d87e6c5c4fff3bb39dc07623. 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/CA1HD1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07faafa45a46c12617941797df662e1806e4d94e6edae5652ca08ff1d73fcdc3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA1HD1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853ead12e8e828baf0059c5975c7ecbb06d77a4411a2c4d16f1e484a811c0470. 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/CA1HD1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d40d2ee1e4800a2402e265434ffd1795828333c41e7133f79182c529c83d57. 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/CA1HD1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106181612d83bb487b3464a681f3279494d9bf57976d58fd648be7a2796a5667. 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/CA1HD1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3064593857f10f65622aaad7ba3a845f69e92835e3280fb104e635a47befbb. 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/CA1HD1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe30a1a45148955128a48dcd1c09b51007ea637a14d1eaf061d7de3115b0ef4. 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/CA1HD1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07453b97d243d9dfaf69e278c373678cf1a7b6073b8ab3f5720cf310b51107ec. 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/CA1HD1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548631c5f8cbfd65935f8b22b9fa5b261c6e1489b60f0e968de39527b8b7586. 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/TCADF1716165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d866f0e2b06592fa56cc8536063c212cf4f3a96bd164fd82d41a8c05e79725. 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/TCADF1716170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d5bde0420edc844ce61efe800ae01dd592a586d5f0ee8b5fc3b304bf2ca6eb. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCADF1716172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250dd799c208a08ddb7c9f48f3dfab55ef07f4cadf3214f0266bc716372c955e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:01Z), 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/TCADF1716177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df494bef04ceebc618786cd75a67944b3d418dd2964c203571c32f4285d7dbe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADF1716178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2348b67ef8b9c7328d111c75dccc3fcaa8b476f36ec6e74aa40047c81444d305. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:41Z), 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/TCAEA1846635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ab8f8f5fec3596af13b26d1a86314ed765174d57bffe44343f84df47277591. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAEA1849254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7f9b403b34da9eb86ef0ba09462a4ca80f744edd84b35003359a55e4c59e62. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEA1846650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c155ec3bcd71220cd762ab53625fce7ccb7beb371a657a2fa75a838b1a6b5d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEA1846648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423f1a9770544001d7f1c1bb42bd9658d5161ac2d47f9c7d031ccde766e8fefa. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCAFN2198165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f002a3da09fe9bbc860ccec9d260c36f39e8b75e3c229daf203acb3a18321fc. 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/TCAFN2198168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc786a4f39e9426fd90a5ac8be48b905b2afc241c1f326e9c0897e38725a14c82. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:49Z), 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/TCAFN2198169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93da773d2662fe793a89466997b30c2e0e5b5fbf8671198c6220c6b1c8e711e3. 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/TCAFN2198171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322422bc8410d18381f0330e0e25d73067ac60abefb388e521558daa87560f10. 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/TCAFN2198175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf313986afb7d8789bb79e8698663337c76f219f1ec9ee0992beeb887baac8c2c. 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/TCAFN2198177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5874ebd0abe888a1ad7388719c0c5e32d5746c7a345d8bca1c400b72a8e844. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:48:12Z), 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/QZHN52172748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e556e88120274e14b8fec677e19f0aaa4a56329a044f2f9e2ad3c918de0448. 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/QZMEP2165332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f528b0af618da43a39347ede7a2ac3d58d163d775d322a3efa734a56721876. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYY2255105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738fed91707caaee161d0fedf631aa9713e64e80ba225d475bd2684299f431fb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6H2237775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a551c248ea86beb2b0cd3be379e0efa81cfadb0b52797011ebd5431a85f80. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWY2291796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b3aa3b6c0e19b0a49bca88e42864b4572ce1779d80bc24cddd847597832ca. 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/TCAGX2352130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9ad1153d0b9c237ba280ff9f1bce0d4a89aec28455e716b994d6ed4ee1b9c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:14Z), 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/TCAHC2382173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b3aa3b6c0e19b0a49bca88e42864b4572ce1779d80bc24cddd847597832ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGX2352130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160756a01cf4ec664ae3c546b88d08c2a2148fd59396a0a0c7374621c9e9fe52. 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/CA1HD1000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede06bc8c3d693d674bf6a9fefda392af17349e790c8119738c35148426f0511. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:29Z), 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/TCAHE2303663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9ad1153d0b9c237ba280ff9f1bce0d4a89aec28455e716b994d6ed4ee1b9c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAHC2382173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02203755d66ff07479276e374de9a966d3e72bc45528d9e59b15f7f18a8520ad. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHE2315969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a551c248ea86beb2b0cd3be379e0efa81cfadb0b52797011ebd5431a85f80. 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/QZNWY2291796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d8910c34b59cd4fe66abffe2a81b23cfbd179aab9f44c989a157bdd2c26bbb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:32Z), 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/TCAGN2291572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506cca4b758e9e0849454be8f4bff780cdfec8a2b1238bc6cd68c49797d45271. 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/ATR981206498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568e405ecd9641356540b8fb34975557adf12f302b1583d02a98cb9997d91cc1. 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/QZES62435360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f7ad5ea8a208044f61a70b929e610b2df9b07c3ac78445fbc66a329ce6f291. 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/DECY61000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568e405ecd9641356540b8fb34975557adf12f302b1583d02a98cb9997d91cc1. 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/QZES62435360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb565a34aa6344e5053e5192987f6975540b18b0ab3a21b6df9203ae28bac76. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USC421500029.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch