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 0xd861685e745f022abe9efba28fd971b817ecc9a56e30a996243781814985196c. 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/0c8d112e-3fbb-47ff-999f-60ecd1b1b363.json and https://artists.proofprofile.net/proofs/artist/0c8d112e-3fbb-47ff-999f-60ecd1b1b363.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 0xc7feb79251abf7038d6bb06c73d463300111187168feb432b35a2ff148bceac3. 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/QZHN82077027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccf288dc5c7f80d9e3c434bd5f5547f865689aa8a293596dc30d747376286c3. 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/QZNWR2049232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7920da2edb95c48f96452318efba49fc8aa617237944d2396d97b88f7209138b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNC2115397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef70f0babb24513265fa7158c4f405ab5c614be8167dadd2828507a6981c7a7. 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/QZHNC2115398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275ad585692f771ea3c76207d78a3ab9ccda3e9883f8fc636c7a038f8fc4030e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:31:53Z), 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/QZHNC2115400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9abf006dff2b656017687822f8c9f6892934f1446c4758275ddd47367da7628. 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/QZMEQ2195615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aad709f03ec2f9618474d7b51d95d0734127d0b656b4731aa22bd825dd31e2. 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/QZMEQ2195616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23385facdff8bf561cb31d3fa4b88c145241a570ba68f10cd1227a7f9be050b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZMEQ2195617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f21a4f22d1c0d1215a942d51f0053ea2c7d2437f5fabac599ee0d4ad1fb0a09. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZMEQ2195618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8d95c8712eaad035536ca392b09e78c596104986197aff258741656604d158. 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/QZDA42262418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8a0133de5dfa1b022727d6836e1f4039daa3da0ce6e5e0ddb23d4f379ae7b8. 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/QZDA42262419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91129463c5f0400d2bd031a71e18aed967928a1bb503bb89f709bf4d33f90cf6. 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/QZDA42262420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3719461ad3ec8fead01fd06100f24a4dd5d89ed7b5b896eca2a795d9b09efc52. 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/QZDA42262421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dbf88f2abe2b0716f1b7feb9c6b0bdd02384e9f734b708dce435fabebaeebe. 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/QZDA42262422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02faeff30e5d5ca07d93102d255ed3ee4966a69ea36739671fe6127552371d87. 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/QZDA42262423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b06dacc49eeee245f67590f7bc9375d84b88f83f69e6a97d22407bbf93dfd41. 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/QZDA42262424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911aeac95b644b88330c640b6e56c1eff38f42d8776f906a17f48601ba62911d. 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/QZDA42262427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5b48a6c81e29d7e1acb14e6dab5902c7849afc7423e9cd925f62555314ff5. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTAW2299764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868d7da1e46f106db00bdb65d421228c403a2cf2ef61ed6051eaa9fcd2a80f2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZTAW2299765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf34ddc51981b86c43459c9bca35d191609d701fccede38921f1bba788a5b5a5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTAW2299766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff4ad433b9cca4df01be714a0623af361b36af82908d8907b60c49740043f12. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN82213551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a6130de8dd68bb18bb642570d32277b889547827078fbd5b882951906ead0b. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTAW2299768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8a5b40c6af6dfec5041af6d8ecd5b32177202e9d1ea6efdff80ee27d33ee3a. 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/QZTB32232292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145b03af814c9b7962f07de825d791aa11660b7da42f769aa855bd9de038da01. 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/QZHNA2345915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e8b0546f232210988d120d9601d90e4c6fdb854dc0ffd8fd063f8a2907c6ad. 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/QZHNB2370565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019cd46c1201531f53381aff69998f952c0dddc08ddb85ae6f5a03b7f3e400bb. 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/QZK6L2324839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1850a60c5d30c020f6a6d91c9cd42a7ba08fc734fc3cc8ffc3ee25099760c6. 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/QZK6L2324840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b012298adcfd845bdb73bd94a972a2ec3cec77fed1190b0b9b10c23a8bb5a3. 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/QZK6L2324841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c73f89721800e980e9056feb6c2a72aa83720c6375a8c2441629207e1dab142. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6L2324842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6426ee2a098b1c26b8342862f9b11d4850b554dba155df7736a006fee7b06b84. 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/QZK6L2324843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae7ccbd546541016c849e1a757824215b41827d73640ba784dcf770e7f13289. 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/QZK6L2324844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c9fa1517152c19c40abd112b3bf2305a2ee753cfafc14df55535a2eac9458. 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/QZK6L2324845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d67ec3ddf9e9dab5f6d0b850310e0b89f18095cbd0ffd3e7874f77ae0550653. 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/QZK6L2324846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd1337fcaf7c8d4e7838cbf309265676e7985ab9a80d8b71fd594936f90acc6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6L2324847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f639106b660b4d0f4f94e9198c7d77068046f18d9381cb8e18baac375b83545. 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/QZK6L2324848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1c4beb83f8d5a7d5acaca36f89fb8ecc8bb9b0223c7315e033f3e16f820fff. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZRP52336361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79345ff70a051a0ea9c5687aa2e004e941da7ec6215eb1983e630c1702b6dc5c. 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/QZTAW2370766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f647c10b992797c571fe71cc4baa1922c3782189ffc6e1dfd405a19919191b. 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/QZTB52359312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c791623b39f91aa0b93f72f5f567a437efb39eca1cbcab9b3f8522f744e53. 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/QZTB62368428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1b2e9dc9e1c984dd4b00f6a7eaae4149373c320ec4e94e85ed227e41d3efe4. 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/QZNWT2440843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e23ec4b81fac1893afa6043021046f3d5cb7938c083415498e6ce4b83184090. 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/QZNWS2543269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e00ba7178bb567ef61ffe61d9f122240eaca7c56566a55156958fc9ddda21f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBMYF2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2489729db0ae9c764f41be9508da34cc98b0cd3227ffa22acbdd576bfab36b. 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/QZHN62266048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d7a3dafbbab72f949c1d609fa91265ded47f8de33d089f4c040ff453dd6899. 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/QZAKB2152939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dfef9c29758440f4e0314d99fef83e755768a58800040a3fcc00e507100615. 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/QZNWT2441930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9501f57402a68f75bb4257619cff8bec7cc44d8338d0b13eded3a153d1d24bde. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZAKB2130712.
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