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 0x3319b8c98cdaa1d856c4dcf313ac81f5d036986bbc44514e12c761b09fef141f. 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/bd3fbba3-9f3b-4129-b194-8cbfa68a5cf2.json and https://artists.proofprofile.net/proofs/artist/bd3fbba3-9f3b-4129-b194-8cbfa68a5cf2.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 0x4e363bd7a3203bd918503b9726392ee5cfe5fb018e667cfbfca29fb61c25bf9e. 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/QZES61922426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b873dd764ec6f2baf9dd1f36810b944c3a28c03df4bf59b788a9146c75e2940. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYX1948170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba328ec289b7b6d55f2e8a3303fba7f2abea8804ab034806e20174a8cccc3bb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ5FA1950528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31a0d70dfd8321102ccccb3d3c34d71fefe2cec0b8995fbe6fa5aa9df6eea23. 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/QZ5FA1950529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8206c8d099550a66f0bb5a3d8b29b39eb99ed9243deda171209deb08e395d5a3. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:22Z), 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/QZ5FA1950538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed2192ee2d7f230fbf0661d9fb56aff28877e58a8d4a3fd69d5b75e532c426. 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/US39N2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd6a48b963dc701408511b20dc17b74224cd4ddbb5203f70874ef3361d3922b. 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/US39N2000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d91b7ca05e77302316a1d96eebe6484acfd6bd943ce467b5317bbf480c5915b. 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/QZ5FA2150244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51c8dee340b52efe44fa781b4169dd9b90a00ddfca407cb005d2e341c640f14. 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/QZ5FA2150255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc346bfa186ec84e483faaa4b4ae16fc4ab85c04c0bd4250b620689af9b1ddf. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ5FA2150245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712b42d51bc0fb14d25d82d2037505b2daddea771fd37ae4e65e84a28cac0071. 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/QZ5FA2150247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681731d9fb9b2301d1e1ba55483b7c4106df5af2ba6932d5f2226e7e530d575c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ5FA2150251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f7fea134d9fd6892d223dab4ff7b7b9d228a3dc315821ddc07bf5cac8e7e0b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZ5FA2150254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50890bc445492d63d45fd674ae4cee8b7880c3e34cf295909e8f8b21f49645fb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ5FA2150258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cbc7fb00cf7083a38258a91ba7c490203b7fb93db0137e8921d17ca513b05a. 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/QZ5FA2250082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c67e96b9b1f8cdb1aa12f1643597156f9a81c0c0046f786a2e818f586fb83c5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:45Z), 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/QZ5FA2250084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9032b4444bf36efd37b086c9c35ecbc5a01a4999aa390143de0129d68fe78336. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:07:20Z), 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/QZ5FA2250089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf84a470b9cdb2e5fd23f2ef6699b9f6c0894a6a2e72f784a68074a43b8d8d8c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:09:41Z), 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/QZAKB2316203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991e291711ffba582427e94e3a645f549778c6a89e4ffc605ad66f4afe995591. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:27:02Z), 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/QZAKB2316206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c29c16f69b66ffcef46147318f590ba1028622549cc392e0400252e13beb60. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZAKB2316207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84f7a226a075d8585bb7db845fe0b55332e5f20204c57acf55931cc2ce4b925. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:47:08Z), 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/QZAKB2316208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfccde2b2d434e7cf18839509ff09e71fd2325f919a9d39429773901ed1e8f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZAKB2316214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e25f8515bf1117f74223b5bd0bf901d725e0b123c03797b6bcc12435fde214. 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/QZHNA2309859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3f3996112f8bbaabd1882d92688a20688eaa09d8a9f6b34d721a988f53bfe. 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/QZHNA2309860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda346f81f079b19e8bae0098855559fcf781d477cf616af666b8ec1bba872d58. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHNA2309861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9c3b56ba96cfeba513e390126f1ea8dea2ff83d8f90aeaea12325ca0dcc2b0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:59:23Z), 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/QZHNA2309868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd35fb7bc445d078752595306c418e197cde1d6ae58d85c7a24ea6e0526b22. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:33Z), 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/QZTBC2362454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6627851294e63b2f2012332253cb1bf8d033257582f28d4e312d43c9cbe70df. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:45:58Z), 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/QZWFH2387251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463e74ab0cc3e05848fe43ece36d234ff6f9cdb5a6e0b71404044ac1dc15545f. 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/QZFZ72426372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da4ca7bf0c142edeea023bd6d743893013e434d4665f0770c7ef328f151673e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:04:04Z), 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/QZDA72436929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09578a0ffc5615e87e974d62d31ebfc04996d3f8d548fbf8e3cedb6ed96bf45. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNA2418516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c32550a02b139fe77fe6c5fd14380d1dec48a2cc41443edfca82b2aae1f28. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWR2421773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca802fb469f8b057ce4ec0c1670c5f42db2884b8c80c2f1d33dfbd7c92fad2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:33:25Z), 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/QZNWR2421774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfecb354950bddaa2433ed43a07e6a4f0f2b0c4c35c69dfca12c74383184bd2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:12:47Z), 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/QZNWR2421775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d050d6a741d9d6ee6f6a7d7d4349b4915146161f9532a386d52e8e8cedfda3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNWR2421778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974f5f5358ae4b0614bd847dee87b31a5d82dcb03032689bca7061266a6d0d32. 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/QZNWR2421782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f78cde41a20108d61ed29d09183fb48f9e093f92631ef0b61be9d35d8c46b5b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWR2421785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf397de9f920c042848ad815d57ca8322f12fc5ecae2d9159b042e4f2898f40ab. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:08:49Z), 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/QZTAT2457870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb90f22bec2c9f4afc25df0a43d768c77150d46abc9c0a2111a3e6ed4cc5d56c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:15Z), 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/QZW9K2438035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb8c57103f0577786ad5c909ad2d3ab9434625ea51bc1132fd3c5ede07c778. 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/QZW9M2404712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b48b5f4f5c18d2ae619d75af83b3d74e0aead07ed8414feb5c36662e939a25. 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/QZMEQ2425823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a4e6e575615302b1e659dee1444a31797425f6ee3b64989863bab10a4b4fd0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM42K1974400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015f533009474e08989d7de87d844ff1475430385889df930d15ad94c33c7f1f. 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/QZ5FA2050049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52430d2f64924f2aeb761a54351730f3ea403853eb54ca66e0c64302f72c4d9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZFYZ2033416.
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
Blues (feat. PG RA, Reck Issuez & Enphamus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45421fe4c11c627fe8b9f1327a5473b75012a66f1baad37684176fc270961009. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USLD91751486.