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 0xf1a1e732efcc83a8e0238d8f3e008c26f5070b669c56f04c01423ec81864f99c. 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/f140a0a9-73cd-481e-bfad-ef1e90938778.json and https://artists.proofprofile.net/proofs/artist/f140a0a9-73cd-481e-bfad-ef1e90938778.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 0xc27899cc8f8e48b167aac492f03b976cb143092a809f8cefb225cdf0bac27556. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USCGJ1929208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7c8830d9d1a21fea80c6f4acbcbec1d11cab6354fab6a1a8f1830dbb077782. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:42Z), 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/USCGJ1932318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db3b71f8daa14d105e7ab375a257b7b830cb143efb6d472a600b1ebe705993d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:00:23Z), 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/USHM21993947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5ae43c104a19e5104920eeb6809a4efb3876471ad78cf10d8270fae4f3e891. 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/USHM21993982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292aa363d68db53a22a19ab69e670b114764fa019e67159158fbe71b8141394f. 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/UKR6V1913058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122d8ec8b1f852f837c337090950ac2aee753828810e63ba269b594af13b18fe. 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/QM24S1927053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afb64d4163c82277651bd085921bd139d38bd7907fb5637908234828d7202ec. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH2011931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2676724442ad4e887e2dcf386fab09d5756aefe224d1991a370ac42494f2993. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH2055462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f48dd56836aea6fd9c7084e4d9585cca7754fbe62422a2a473c420af1589382. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USCGH2090929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc640dc8559530009cd3a7885e3ef6ee916e80b716a69e0e0522233540c3213c. 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/QZFZ52091152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a63af9bf9b41735a70e021f56e134a4aaef43d117f3f06ba06c2c2c151798a. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:31:26Z), 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/USDY42057402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6e93fcd1d728ee8439b509589df92977e39a7e0c64732a0f782afefcc8539. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY42057533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c45ba969e3da889b243c443d8c4ad0cd1b00c3bef0b2b88fb73a138eba7deac. 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/USDY42059624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d63d108e36db03da03eaa46d905cd85791af6ca2af4e693180c6720dce3896d. 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/USDY42059717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7442efb8014da1f0e3e62977cf011994f06bac764e1b3e838704a9bd20d1d5. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:36Z), 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/USHM22094983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784357d7942c9745a755c7c98aedd5330b52aea05b3cf85ad0e7367e94da61e6. 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/QZK6H2020444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bee87c47d907f662b9e594c7f1ca3d26e39716ff7262d42156ed784c7d121a. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/USL4Q2042789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b806eb922bb2460a36f1a08a0f894f5c28aa369050bb25ac8b0dcdecdd39338. 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/QZNWQ2064974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b51605ab1c655301d8f0e7cb1b0a967bc768dbc4049137970baa1fc3683736f. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/UKR6V2013051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bc65fbcafe7d5d4667c7cecdc766968dedf4e391a2ba899d60356b1a3ad53f. 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/UKR6V2013116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff47683a9c51b03bdbe10a94c74d0658c62073c885d1b04a701ccddaeb49783. 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/USL4R2169051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13dec249ab9b4747c44903f66dcf38451df19ccaa6c28281875ef75924f22bb. 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/USL4R2169052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0d505eb47e4a479486d736e791e138589ee0f7c6a795b6a69e231efe79439b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USL4R2169053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e11245c3fa06525279dcd36c4ee59debd90bbc0c1d76a54f86aa25305de1b1. 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/USL4R2169054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3561a341d450b5a000e51b2b895b8d511b56be5d1bd29c1693f55268d3e96da. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USL4R2169055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f169d4e843339a14e1b3bb4eadaa624763f9b60d885e3890574584b33ea192. 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/USL4R2169056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ebb84d74365e4fa95d94177bd68b17843d3a06c9d960b478ba472cfbf8b617. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:31:36Z), 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/USL4R2169057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fad25787851d0c5d95a166c940f314f83d7e3e453ddaab343e9ca979a62ba52. 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/USL4R2169059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984ed4cf077e96aad921751f47193aa3eb08bd653b275562a1af22741977abbc. 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/USL4R2169061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44b13a12aba314570e7eef81e42ba7589487d8078e632deaef7b77a45336885. 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/USL4R2169062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc70be368169451a15901602216add6e2b68a50b374c2af03a27f77a9c108566. 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/USL4R2169063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc70be368169451a15901602216add6e2b68a50b374c2af03a27f77a9c108566. 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/USL4R2169063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122d8ec8b1f852f837c337090950ac2aee753828810e63ba269b594af13b18fe. 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/QM24S1927053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0224273d0241629f0806be8a03daed972477e997d0e4c1dcb3348294928496d6. 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/AUMEV2234066.