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 0xcad4c8f057887c9d4199383def39dddb72f8ea5fc395bc1e402c9e3fece1a200. 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/2eb3d674-f462-488d-b46a-24834a0ab96d.json and https://artists.proofprofile.net/proofs/artist/2eb3d674-f462-488d-b46a-24834a0ab96d.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 0x3d14ad90c8aec12ef54f700a30aa7657b156dd9bc7cc6cb9947c91ecdcd4db0f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:38Z), 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/QZES52368110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b3ae94845a4471f8003b6d15771318bfb2fb0aaf27ceccec529b01c3bc0c83. 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/QZTB42357924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b49343eabdb4f5947088f555b021a1efbf7f0de3219531caf2a24e1117a933. 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/QZMEP2301317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33286bbb406e6b21ffc9da77ffd4a667acbb9f6b2c5231b3efab85536d2ea874. 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/QZFYX2413601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79806a07b44ab4d6c0710042b188b201c73c9c021b4da82ca0fb5457d7f2900. 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/QZFYX2413602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68279a1dc157e1a6a1cf861e713c95053c5fbcca70e6b043e2602a35e11393a2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:49:48Z), 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/QZDA62467115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74da9013ae8cbc5c210d40f59aac88c195e4811047bb5a94cbcc22a5dc44c2d. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZDA72464798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc4638ee780e48965e1a4445d5c77d4695f28fa46fa18f9e4bf779e0c19cc98. 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/QZK6K2418932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a311d9098133f03f02e5c30a4a859e4424471e79cda6a9b9f3ce94a99bec2. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6K2418933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca4bda93307d11b9dfa287e05a649ba45bdf87a1f1ca8d3bf78af6625873b3. 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/QZMEN2454875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfded7b4c6c08a21175837bb3345feec1b991073a3f78499e0155f1fc008d0456. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZMEN2454879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0e5f587bbac228a6ee9bb762c0f75348b639e1b09e668944b4d5b28cc002cb. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMEN2454881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d470c9a73e3b8e818a3b1a7c5ec6d90f9c27417499711160adb2f05d698ad. 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/QZMEN2454883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5b949f1863cb79fda5700ea1ef8fc0dde526b2e789d00026fe63a444b80242. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZMEN2454887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a75d89b789603528989113032d02a0714056b7e56ce3a82e3a4c7fab47582f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:49Z), 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/QZMEN2454888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca4bda93307d11b9dfa287e05a649ba45bdf87a1f1ca8d3bf78af6625873b3. 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/QZMEN2454875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11e4cf5e2115ec8faf0ba934237f0e09b9c82e095a2f55a0defe4bc963a3922. 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/QZMEN2454876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff95eed904e231479d803b4b849c251a6a7499bf6c33974752eea32e75d2caa. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:10Z), 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/QZMEN2454877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fddf70ea904711cbf903edcbc07ce64b22c579ce43389dc6d2df60f38abe8d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMEN2454878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfded7b4c6c08a21175837bb3345feec1b991073a3f78499e0155f1fc008d0456. 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/QZMEN2454879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacbeb3cbe64f80f79ceba2ca7a01a99c9b9bd16dc058ec296c00375fb985841. 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/QZMEN2454880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572bd2fa214d6c051b312bc2accc06e55f5a3bf1ebd0c2c7420e5e054c28a3ec. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:51:15Z), 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/QZMEN2454882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02de67813ab36fd934cb508d152cfd860ba574e8e79b102aabe85601d7d6e2b6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZMEN2454884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd77b261de28f4d598c825aa32a2fdff63419e56993352b116ad5cc3c7c9e8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:39Z), 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/QZMEN2454885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5b949f1863cb79fda5700ea1ef8fc0dde526b2e789d00026fe63a444b80242. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMEN2454887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755f5a4e795eb669e74d1f75e790f8fafdad488e3faa117f66cb122cef9acfde. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZMEN2454889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b68f124dca70c003e94ce93574ffaae0d234af2621f80567f83d5bfd6da53. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZMEN2454886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc1dea746b6b0f62b6e02cbef3118f7be0674a7ad36723b184fd12fdfb1bcbe. 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/QZTAS2481527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c28ddff303820f587dba565bc4fd9301d0fe77bab1cb8e02c62c38ca9f31741. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAS2481528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe239c7565565c0b4d851315356d430e93ba4132306fc490be891043c498cf831. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTAS2481529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240efb3ecd0c0f5f74b07dd4a94f5f66eb188706fe3f01bdd124b911166e0d30. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QZTAS2481531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1dcab21bf3878af8389780576217ed816a31a93bcd56ddbc3678dfe9f27513. 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/QZTAS2481532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a3a1f3dde63e40401bf868af5018ba28000a8fbc23e909f09f612b1ab7a1c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:50Z), 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/QZWFX2498251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc584f55a83c833093f5396844532f93922ba9ff2e27497c07ecd802591606f6e. 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/NL8RL2511972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51ba33a0106afc7bdaeaa7e6d0ba6a3e9d72588cb3734f2b856eab7e34e3fca. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:42Z), 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/NL8RL2511975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb128c634acfd49bd9e5317aabdbea4afe6bffc9a134e447616f4155cbf2157. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:37Z), 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/NL8RL2511977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d465105f07bccdd649ee1f99f73c7f683d24dd62587a14df1ab8f7a6df702e. 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/NL8RL2511969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5729d3fb75e16806b89d31cd20b8fd9515261d519f5353701db774a89d6a21. 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/NL8RL2505205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea8dd4d7211f204249664adfa7feabe4040684d9c77abfed68b2e02e54ed0de. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/NL8RL2511973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d7084cd4dc85a97f63230f0b98ce6aac1a4700cd141fb91bbee1edaf5ff553. 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/NL8RL2505627.