Nuclear receptor TLX (homologue of the Drosophila tailless gene) also known as NR2E1 (Nuclear receptor subfamily 2 group E member 1) is a protein that in humans is encoded by the NR2E1 gene. TLX is a
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 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 0x29f9441793a269615d0f991254c1ffd72e4090e41ae7b51c5ad15b007aefa2d9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ea575f4-1475-4722-969d-59eb5eb034b5.json and https://artists.proofprofile.net/proofs/artist/8ea575f4-1475-4722-969d-59eb5eb034b5.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 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 0x23f1020d1d97da0398cebb6a8d6750268f7c568d5b6b30e95443fb99d9b333b0. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USDHM1605104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0d8ab6178543cbc09ec8de8048c40f7a2dbe71ca086ac4395de417ff8d079. 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/USDHM1605105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc877522de0a19fdc0fbff43c87288d21ac2a83e3532ad1dc12f644b18dc31e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USDHM1605106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9991a59dce45b6b0de22c6b1623fc3d1bdf5984816ffed6e842fd25d4e128000. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USDHM1605107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc19bd6f2cda940f726bdae5124b1ff1adc76e59b60fefabf6723497c98dc8d. 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/USDHM1605108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29acc079f9b2b47f49c0b27d356a705af7385845780d72365cee0fd9ee0a05e9. 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/USDHM1605109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24aa8767bcc4e7b00ff1b98a99446e041ec5f7b352eaf139f797b0ba0065510. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USDHM1605111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4d5a9058be9602e0b0c5063230156a23d078abea946ab38a9a29dc1508f0d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDHM1605112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5c911c58418cb939de32a649dac94d284f0bb001af3eb203ca200268344b42. 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/USDHM1605113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e95c6c8a269246c134ade6c7309582bffa78cda9d58e723a7b5bda2deb3f96. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAHQJ1902535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580bf96943c333c50cc8f1a70e8a282c59f36ecff615ef378df9983bb550cfdf. 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/CAHQJ1902538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7a5dbed607c18856d08b4d28d84272503e471c18b68c5c7c0195d2bdb8353e. 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/CAHQJ1902553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794b954643f9d73810cceb8619ba19a3f816f8a4c41eba0c4596892054d8308. 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/CAHQJ1902558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179a736e8e09ce952709be921cb4412bc07d1d4f8e76c6e736126b318b37cfa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAHQJ1902541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfe414c4c491c03323f45f8b9a7055ab5b7150d5670ad3f0baa829c13d8954a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CAHQJ1902548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2544b414fd0bd359abd7fb930b2f59eb3f2b2fe4f612739342f6c193aa9b7. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CAHQJ1902547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab49cee84eac85a8718ba74ebd0345c8221faee407c07247a4c52f2464b5991. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CAHQJ1902550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee01c7d80e86b84f87569a6eb179f379d9ef0edc2245e0ea261c48018218c8d. 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/CAHQJ1902551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc164fa69ca2944e4a7c5171f7470e2c5c6501861e5168c1d0266a82a5d21b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWW2391772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d89b26ddbd2870e83d6227f87f2a33d84c812124c399e7f7f387133a028018. 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/QZNJX2390268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ea4a2fef8abb61936d8c0699c232e36dcde4f5dd3894876ed1415f6390933b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZNJV2393733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9736a41b14fac9cd87c1ffcdf5f72392e3bbcf69a01881d5db819b99119d02a2. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/CAHQJ1902655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759b08667d6da38075062297a812d6418be13b73e02cd3b2914adc24c39a0893. 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/CAHQJ1902651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdecc0cd07cb596031be79658b7147ea972d63abd32b3752670b7cd3bac6fdd. 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/CAHQJ1902657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8f43bc7f36aea4a3636862942d14f7f63f304f153439d61f1ae629e9684b46. 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/CAHQJ1902660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d3de156eed427259627333537718acc505990c1683a578d62111d43d316af. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/CAHQJ1902665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12fb339a09a46c5af3245096da0e8e4c5e089e2939a4b9457ba9436ff6001c7. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CAHQJ1902666.