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 0xd1cf52445b315463e874cd3e1cc4d09960a91fc090232c3257aba452bc3d08db. 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/9426fdec-c94d-479d-96d2-9dbb82a57384.json and https://artists.proofprofile.net/proofs/artist/9426fdec-c94d-479d-96d2-9dbb82a57384.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 0x9e4884f08d7f7c473f44d6dd24e1e32ba0082bdbe09db77589ea9d94513fa64e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:00Z), 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/QZNMV2113665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfdfff3b1689de61e6d05019fd32a52e4d900f4a82d33d9b491063765dee56c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNMV2142357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb872930b633d87286971da2f1506db1078a5f1bf39ac86b4cf6deb40333740. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:19:44Z), 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/QZF8N2109903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54acc287117e298c0c0393766c9aa45bd3565a50f2358e35a75934511147616. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:19:00Z), 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/QZF8N2169203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338ff51195ed621a277cb26a0e823b4497ebfd50e99fed5dae3f5920f9631b98. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZJG52194723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6b0417b86d9bdaa765f08fba40bd4707a3b95909cfa1d2044127bde824e2eb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:29Z), 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/QZNMW2133345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b3f6f2e60d618daf53dd6af5dbd495c7e48c077ed2546fb7a7971bf5d4400. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:59:37Z), 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/QZNMW2133346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc75ac484101032ef709eb018775756813429a54ea2d97f0fca90d033719311. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:03:08Z), 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/QZNMX2140367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983821bf6458b2070e19e0b6fedbb89987a71026ba8a2799b2e39eb054c366c9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:03Z), 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/QZNMX2181567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85858dc72ec9c7209806ac9a922644a188cc8177fddfdd057afe6d84d4afe18. 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/QZNMX2181568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa40671f9f782ea3ab909bd1637d911036e439ad1f4c6f597cef986e3dc3480d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:00:14Z), 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/QZNMX2181572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039fc6733232843797f644634b50ebea9191944863745d61370992ec64a15533. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:35Z), 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/QZNMZ2104843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61768d83eb24a91d37dbaca8883272d97acede406067a7fdae8cac63a1c2897b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMWW2132431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84c77d5c7db551cf7fcdd7675aba01799b9ea8f0cdb425138af480cd58e0f11. 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/QZJG52296887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d240a22d401992bd2fe37c4b9087714066cc36e2ae1a451c5436cbbc571bf7c. 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/QZJG52273985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d0f9dc4f2d31f835ccd7aa64e48551594acd5abea4d1ffee33cd083b845913. 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/QZDA82225414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d0f9dc4f2d31f835ccd7aa64e48551594acd5abea4d1ffee33cd083b845913. 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/QZDA82225414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd81171d8d9a2b34ba40bcc0b809e40b6bc5d8a901b989dd271ba94ebc813e4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES52243544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba9bbf37da868690265c237143e1b2cd83ff6a7fa2f784ef5cdd7170156dd3e. 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/QZES92266136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12fcd85886811f5251e0486984087b5f84b568af6e7ad94b3a56e1bed808109. 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/QZK6L2204770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12fcd85886811f5251e0486984087b5f84b568af6e7ad94b3a56e1bed808109. 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/QZK6L2204770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a0dd53c7a6def98f0cf2b085b46b2b2cfb8fa3b6f8794cecb8242a1d0e0e26. 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/QZTB32358370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f61fc69473e4500451b0ed2d1e57a6ac861473dbf69184600693d2d36125ed9. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:20Z), 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/QZTB32358375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc144320059d7d4d7265442e2b6ba73f6b668d4c859b47b22e5c2c248a180a348. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZTB32358372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75e5d00f22b91fe6fdca687b7861db38bc0bec560755611faa3a5609bd5b30c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB32358373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc7a056ab12107602294539b61fefa58fe27b6f55d07a5182a96da7f11c3de6. 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/QZTB32358374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e98f9b95f6f3ea33eff3b382da2c1090c51085f059c7ce80b06903daba832. 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/QZTB32358377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117ef395fc2bffd2a2c623cfc601440cf2ce1375cbc8fc2d4405d2d1ade9518d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:16:12Z), 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/QZTB32358378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d03a5766d9cd6369359edeaf3a42b690ae2c5a34d54b915b175a22acfc5b66e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2486334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768f4984d01e26234084ae47fa78f575867b1fc6f2b27d047ed5e773bcc11eb2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTAY2486335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff8f76dce7750fa3e65693f42118cfee0cbaeef36d552fd01824caf49ea40ff. 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/QZTAY2486336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277a1ad561738e3f73cac3d5852ba1df854077e733574163cd138ba686251770. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:22Z), 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/QZTAY2486337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8447d0eb3d366c69cdd2663a345d46239317e6bfc3b6d95ba03c86f2b5fe649. 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/QZTAY2486339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8ef3da7ebf8fcee89a93654d8602d31367b09cda9879c073f66ffb694f55cd. 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/QZFZ72502494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d936489905fe3420949612e5a858dc082c82f5d8288d30051c202b65ebfa6c5. 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/QZFZ72502495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe804d4fb4f4efd9ee7fb186a13f2c1a39f4341ddfc9e57bf6f94de6c12f591fa. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:52Z), 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/QZFZ72502499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53e6b87b1f223ff660425103b58e7252b4a16d815089d9e31a5c50da962f1a7. 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/QZFZ72502500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6679678b6eab578af156248bbe658512b56e2a4f38a4295b67f4bec6be1e4d45. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72584407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c47453f0517cf5ecc47c46702c404116593d77ff540f615abc939e89d49666f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:11:38Z), 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/QZES52589628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ea7abda3ea45cd5a91b1b174aeb5e16d0450746dd3cc45e5126067435b286. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH7819577581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab5260b72c13bfe55346ee2982511c9299afa1b502f10c50da69e8d25647048. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/NL8RL2532110.