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 0x0ca7fe1ef7061e748d5cc0c1c8918fc0130e908a8665bead604804787da07097. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/235bb778-071f-4e2a-99c8-a45eff1d7715.json and https://artists.proofprofile.net/proofs/artist/235bb778-071f-4e2a-99c8-a45eff1d7715.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 0xe57ad96bb23cbc649100a8735c8fdf209839e05b2781c1c5109f8567a23e3588. 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/USE830952392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7d64b48c17b81057ca1b853c0c836f53047ba872b3bf38615533247c6dbb9d. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USE830960350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675aa5f03f1bcae276e2d13479d7f1d6e78a237475b126fbf92dd04af0399d8. 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/USE830961707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e6a44881ee7c26870ae8a9d5630f60b5930a7073e07994446f2eaab9ef075d. 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/USE830994093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72935c2e422d739bdbb0e728c90da401c0f4f07ccfe7a470b9a16e21068b625. 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/USE830999374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ad7fbc0c1bd5bd9d0f22114bc1a24c260c07ee989dbbf49267d2f643706a91. 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/USE831502309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbf36a7ca9f29d349181aed4f34be20148662a5ff4a3f8ff492a1857a0e0db3. 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/USE831515161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f693ae74d6ad312baedfc34bb0b9cc08cc19c7b55d43a25de1f62fb84961e72. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USE831520955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71520be7a8efb6c4d07ecea742b9a6bcfe78db1d391ebc9887a28f02eaa4e4d1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USE831532136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805b8fd0a1d50ac88381a700244fc8fa827e942b694d63b71b03836c42b2fdc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USE831540169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df0c7da3230a1bd9bc47c1797e52c2fb01f05c581ca8bfe9e6971eb59255f94. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USE831540745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeded64f9ece0c15816a1613acc283724510f4035e90abda4479dc495a4e2407b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USE831548471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cb27ff1de67c3e93bb22cdad942884549d2f425a0492fa9d7ad10a3744597f. 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/USE831578701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4033fc7d966097fe1ea519266877a53a6e3e27374b3479fdefbc198b988a4ea8. 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/USE831595986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf0ba8dcd9e1cb3f5c0381086665da9f4f49fb5953ed12ab011fa3e43b020c6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USE831598821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fe0626d4ee9daf9728a75a7cc7669c150a663000dd6dbbaae49714d4461966. 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/USY281609918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffba5ea0d64e8094b6d4a5d061a12d984e838de27326d1e312bbae0b5f32fd3. 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/QZ22B1634946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122008dfe3d0a1e4d4edd70518c08127c1b8c2f54d5c0c0ad41e10a7ee55fba4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZ22B1744432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a340d340db6e7bed2c20dc4c33e48c2c6f3702d498636ed40ab4c816bcac46e. 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/QZ22B1801069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21c25a5af0f0232c7965e0018e989862235347c20bd27c7809dc8c2b8a17c06. 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/QZ22B1801067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcf2c57a1758d2b384900491b3a29c05a3fb626507cd2d6e6a70fd1fbd47aa3. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:08Z), 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/QZ22B1854304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1292ede39b44fe33c61d76feb85f7bf85c01e877dab5b0c10c58ad5f936148. 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/QZ22B1913955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf658bc7167a6630a71512307d871aefca9491cea70bc6d1b92976e3246ab0d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZ22B1922550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eeea7bb241a8df68dc626011542bf97b6f7de84a85cdcc241e3328b9c4a5c2. 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/QZ22B1924231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2827b322d137ec2a2cd55ed6771d40371197e8543b8bba49521c3193f1c7ce5d. 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/QZ22B1945938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a52a933360622e57462444f56fd118db1bce99b27e7f1b35a8f521315d350ce. 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/GBKPL1829722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60c74511c765b8f6aa87445d5cc52ed72eb4a3f48b37f53ea13936975ce2f5a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZ22B2067268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b500a3c2b3ad2cf595e4b0878cb7a702171aa6aca7a3139c2784d87d4ae4d8. 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/PHW012000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643bcc5f79b7dd44dab7eb2ae9b6b762f08c1caff33834f3d0de816118dbc4b. 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/PHW012000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba4dbb89d78e76f59a836aa6baea8a127e03a2d5cc743c5a0f64a0a4fc7ecd. 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/QZGWW1902660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22076c42af03ed7bb68ed77f7ac0847bbd45923caf21e43340da8c433ffb40. 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/QZGWW1904826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c7eee0fdb7a414658afb9ca5ace7fb7e82ad6aa1a3cdaa73c81b9435ebd8b. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:47Z), 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/QZGWW1914692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1661cdd852c24b0e65aac1b4e8737a588387de112ab59d9ca23c203683d5bfde. 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/QZGWW1922979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2771d1431d80e0c5646644d61714ff29440df24a389dbf4b1ebbd7d24582496. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZGWX2165330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb047ffea0d9c7031960b016c4fa2d416bf8bff7718d953fb740431739949003b. 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/QZGWX2086660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9fdb75ee49d43294bc06bd579abd9cdf600fac0559ec950c2801e8faa979dd. 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/QZGWX2113959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bede78ab47a28b0bdd022976230c0f6c60663a0b15f9545f1845809dbdbe709. 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/USE830977408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0b0464bc1f4213305f149459defdcb70936fdb6e0217fb20b1766341254d0. 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/QZGWX2111047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb675ab5a549a13cca82a396c19320f695337a56c229b2022115d579f67b247f5. 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/QZGWX2010586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4334109907d30e2cc0da1d754ca520e9e0c941b8606d1087f1e0ffc5a0c3da7. 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/USE830953331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401bcf3ba55342bad447c8968c5b89f05aada68dc388ebe6bacdc8f6d09f3398. 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/QZGWX2228128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6119925455fb779def1fb3b906c3e2fd3643c23eaf74e5d4e071ed8533e8470. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USA2P2513562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063ddd8fb9a6fa2e6382e8be4ff4ce879331f4ef6a3906deeccaf068af457ee2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USA2P2515839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f152f657a9f2e0de1a98f0f5fb1eb981590bc33f9a1586cba2a3b34ac2123c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:55Z), 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/USA2P2524335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490a90b5f7e841ecc52527eab49479306ade63a79cb7cbcf0d3174d377c2068b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USA2P2557319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a52b34e83e22544cde8fdbfc462bc715ae0669a582d6b82825162f2d0020b0. 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/TCADD1762891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288c6029b83ee3900fb9660118ac80ab110c33a8ff6f708c8909f075be5f9ea. 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/TCADD1762895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000d22963d39ab60d3b106138f762e05c8076778975c5467691621e324d0bbd. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZPJ32283046.
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