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 0xcb55db7efcd0308c6c2368f1457f7a7e70751ed9bd68e102583a83c772880ff2. 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/8d0dbbd0-0a2b-4a40-a5bd-2c620a261867.json and https://artists.proofprofile.net/proofs/artist/8d0dbbd0-0a2b-4a40-a5bd-2c620a261867.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 0xccce04302e5cd0dac003f024248c25af7c72f61132614be9398c8b41ca5c940c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:48Z), 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/GBSMU5376185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dfbf976f0bc5c54295e7c09bb4df45e255fff608f390066634461d7b8e6f0e. 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/GBSMU6135418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a670bc7a6b2a7e7a62885dc59fe48b64259fda736bcaea07c2b9b88f9d0637. 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/GBSMU6135419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b492cfd88c3368028e25b77303225d5dcc35cd3c17bd3efdb966c9bd3d1d80b. 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/GBSMU6135423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1754be907e14e8087a47b8c867d92aa60ebfe5e9130210edb9000b10affcf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBSMU6135417.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232a6480dc86086f1a60741d451ea27637bc5e9d6c000ef32a1659c26512cd0c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBSMU6135420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac5072e800f54bd40e2f4fa5d7ff73df454f53f02e9d9ed792adddacfff4e94. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBSMU6135421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1712fcf9a3bbf74e3a636e40ec341c32c0ccce47796ceca5a29ea921270a2a32. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBSMU6135425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a61542a2f438e6845367c000a5efd25ed59a826f3e7b8c95d48e5ab94b0582. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBSMU7311513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829e2b5a55b35fa221acde48823614b32aee2ed65059b017771fd407d9a88ea3. 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/GBSMU8832383.
Under The Surface (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43adfb61ce59fefde3b97fc40762a1ef4c729d7c224912280f050434f1231706. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GBSMU0005411.
Criminals (The Noam Chomsky Music Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c4e4281e2bd6b3a713f7644f57fe401f86b221a1fc9985f2aa893d864c996f. 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/GX5MX2191526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2be0a673e6427ba7866777f4aca84cf06265939bc4ee164c2e5c1f4bcdd6131. 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/GX3HH2288744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d84ac2a404e27bf4ece66f1a7f5bd6998cba3d3ef323a3deac64fb199692733. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:25Z), 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/GX3HH2288746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a1b7a815a1e484334c0dd2a6929c463dc30af6f658609956d8cac75203f496. 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/GX3HH2288749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7fb7af733a1956dedd17337c40e7b9033aaa363c211b93f05d6ff74be11a56. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:54Z), 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/GX4R52279132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0429083616db9ea8d8e463e9f8d6ecba93246f4636ff563ab2187807cb3b3980. 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/GBWUL2230571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5c7269c7ef762525ad5343e13b9af07ce84301b0a6712f47e3eab3a2d414d1. 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/QZTRX2220561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e9a07f9928c479c69ef1924f4b1306ce3d4be183fa23f5188f6034962a246c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:56Z), 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/USLZJ2313337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485f4e90c18dd5c239627eb67683cceedbd7eecf5af50143a82cb6988d2662fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2387151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c7b77fc966f492b7291999ed35ab9bade45559b2e1b498dd60c677d77c2f22. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USLZJ2387163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75694856f8b0ed72d7aad7863d7f256a87c2542ed5e4cfb30a1e32cb692046b7. 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/QZTRX2376094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9701213180f00150ae81366f13d81ba598aa01275c5c65a423f159e59a158810. 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/QZTRX2375984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8f7d9cf5f1cb74783ab0ea52b486c83c0498e5418f8aba2734010edc0a689. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:12Z), 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/GB8KE2324924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ee7d30502c6550ddaee23405e1bccabef7be75ad8d42408ab3dd9ae93035d8. 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/US3DF2400712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df30f2ff9082204bd62ce261834ac2bed8f95fd1684452aba1c204ea9f070a. 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/US3DF2418900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb644cb91817414c4329379d3826dfe03ae545f058b19e3f93b8f3b325436f3fa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX282460023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d862e09de321783ebd06ea08cdfcd2b47670ccc44eeb2da7c7873dabdba57f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:43Z), 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/US3DF2440273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529ceb7b47f2dc81d48702f33cb47b18ffca3d35691d63d57f84cab4efc76cc8. 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/GBKQU2446292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1d18a0aebc85590f2daa909396e84f497aa1da1675aac8b429475f6eb838b2. 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/GBKQU2480150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afa2e01d6743093f229652f8e940ec5b3d7daf7ec58c809b301084e554af50e. 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/CBC6H2320128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d7da6d2ce4473fbcae7f9335878cc44fba517c5adfb2984af2f4a1323ba06. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/DEY472574187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab970403c19a06739db9b9b6e80fe9d03d45aeeebdc8ec7555f775a7234ad9cc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:29Z), 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/QZWDE2531102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88523d3d727bba062d559c00a4165e724eba753bbf63004b16a603cc28ed0bdc. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWV32542597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5b7e4f33a7cb62d7bfbe7d960218fed61b106b2cf0fea3fe299be49616492a. 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/QZWV32580697.