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 0x99c41430d4ec7832e0b6b306b25fb0fd0e30abe91a5630f65d65220208f2bb28. 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/8b9a7bbc-1041-4102-80bf-3c8d347bcd9d.json and https://artists.proofprofile.net/proofs/artist/8b9a7bbc-1041-4102-80bf-3c8d347bcd9d.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 0x83e5a2357b2c0d05d8b92e14614441689ee877de0cd4af68c61d21bf21eb4d40. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:07Z), 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/TR0130600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b64306b89c506461cafbe48c6bcd47c01f06dfbbfafe2b830e989d929fcaa9. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TR0130600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcefd560f3188f5fce128ffbdf4e67eff4ef9c3915f06b2c3fc7659c1156f65c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:44:12Z), 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/TR0130600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a9156a3aa1cb24b67f9c0215a3a401cf893bb3bdcedc623ec11ab195613dd3. 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/TR0130600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c8b96ca4bff783e08375065a100d63987047d4414bf277e58f9b98f59f70b1. 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/TR0130600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f301170b0855a5289eac3a2f6cca287df074ea3f981f2e054646f7e886b5e3f. 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/QM6MZ1850188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d7f1e881e96df02cb3236a2f41cb8bfd1a902aa2dc49aa89e2987d521daafc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM6MZ1849342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9d993b1626d926d56ba17025a08c4598c435e5d122a50f8a34effc9c393e4d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:02:13Z), 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/QM6MZ1849346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10214e2a0bb8e4d87acbafd67dd1261999f96fd3e42778cfdd4f811dc301284. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6MZ1849664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a56d068a8786c21fe49bd49b98ca97fa855a4ae338d18b2d577416cef79e90. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:36Z), 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/QM6MZ1849665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38797d7605ede698cc9f79cb820e681f6ecb42f9bab0724ebd9e2b10541d7b95. 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/QM6MZ1849667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f2350a9469775b720677ceab491a10b69d8a71ca14eb292827dac805853a4c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM6MZ1849669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3158f6875ddcd4b09a838e3abab2972856422876c56f7ebf105364b24886e28f. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:24:35Z), 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/QM6MZ1849670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc9a54f32994e5c25373703e4d8385d182ea9d42a912a5874f8b68b3f80df1. 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/QM6MZ1849671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbd032e0b00359b1ec5de6e483f9a0f1e637270e2b3479c3396ca0d33566411. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM6MZ1850067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960218a50bbe564fb3b8c134938492a49487f57c0cd5f5cc8d8be957e7750d83. 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/QM6MZ1850072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10267470eb3d6176523587e8910e999ef61878941b456de9d2bf65313df7fe14. 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/TR0681600355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d784e5b83407382703fded9c50fd9c4ec8ad254e34cc961a157c04c16c680a2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TR0681600361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d6ce88e9e5426a488d3c5bbf37605ec4fc15c297e99d2da5d2ca1ff22502b5. 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/TR0680800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c939f99d6e0b0e222d9bb01398f2a99edc450c3cac831fc5942a11c9562415. 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/TR0681200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4587b62d1e6d92e1986ef617718a85e5fa37e274e9b311e07ce566830e8a5674. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:49:09Z), 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/TR0680800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51fac6bd9d1669e0c6d77d314b9cd4fc87d8aea2e9edf0059ea44df95067cbb. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TR0681600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3288101a62ec41de724652d1ac0d84aafb9423b46a260f6dec338e42da895664. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TR0680800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37183c0f1dd5c75a67c49505c24691e05e57fe3ff149077bb3a3d5159229c60. 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/TR0681600349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0860be00750138853543989c4ceb5757799284a0fd883e2e7e58c970ed9b06fd. 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/QM7281979100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e6bc03ef6b09c33476bc2d0c665c65c54c3cb79f0ca79915a12aff74bcfd0f. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QM7282012400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d0dabc83d11b7b4a4cb11c8a1549d62a4b0f8e9666730e5f58067e02792302. 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/QMFME2187010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602534e743d473d2c7926e19b8332f59312c5cf9afd458f03abd6c92b48f53d. 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/QM4TW2283209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eabebfacb9b87de27f0892bcdc5afcfbc9f8ee9102f176c80859ef78e032ae. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QM6MZ2221051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea16a3ab3068721c84490d0202a5bdc8c8004f892757fb8221c6eec85127851a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4TX2348985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7df8cc7d9537888c36f3bb08c2fb9a9f433fb041d890a2be0ffc4762fe7452. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFMF2335181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7784e8bb03c12aa875248206f779047b9225c4f435ceefa31515491fce52d0e7. 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/QMBZ92418455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc1ddb03be7966d196a912697c137d2402b36eea70361ad36d6b6ec4bb6f6e4. 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/QM7282410210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50a3743ad2978ab459daec137b1ec36c5355f987431ffeb31f47b90009cddaa. 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/QM7282410183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f87a5adfc951aa9635489cfa1754fa7ad6450ecd53d121a85b8752cb678bbfd. 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/QM7282410191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955f140d3bd9a94b9fd10a7ae9fee9b47c69e90b7d4d22b747331923bf48bb10. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM7282410208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3df38570a7d684135234efc66ca4e9c89d56a0fc110b9d64dcd952bd2c05d7d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM7282410228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fbb78571a7c451841032d3fa9b0afa1c2493b9ab2119e27f4e764e26f16dee. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM7282410246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c3db6d7d7e8549ee59c711496395ba984cc4135cd479cbccf4226e41e1c15. 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/TR0680600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2de74ee62611b8d16e1ccbb465cfcd827c48151fa062e990e1a4e6d3f00aac. 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/TR0680600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c22021897fd77b1d3b7b379789b62af0c9d82991a58537f497309249462bd1a. 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/TR0680700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c31883503755685e2ad282570619703f39e34f801004fa4b60c8ab5ca0c4aef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TR0680700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b5ba2f957549bf82f645bc1ce820c12d07ee5bfd60890ff76ff26391c84a9d. 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/TR0130600039.
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