Clown Core (stylized as ClownC0re) is an American musical duo. It is composed of two anonymous artists who wear clown masks, speculated to be drummer Louis Cole of the indietronica/jazzfunk band Knowe
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 0xab5ec0b6f1a629ad68955ad8302158cc23f11e3616d3f05ae90414a796fe7891. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebb2590d-ba97-4b83-9f1f-17cee4d5b7ff.json and https://artists.proofprofile.net/proofs/artist/ebb2590d-ba97-4b83-9f1f-17cee4d5b7ff.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 0x00936a03ffad354e9c8f3293f6ebca5cb67df26cbe6347a0189379d329bdfac6. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USTCD1069437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87d43113f07ee91c1aa5e723e7327d225d008ba32160f2375915b312f61ee6. 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/USTCD1069441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd300a3c65ebd3d60128350aff2f6ffcefd12448f930353017802a1009be97b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USTCD1069444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0088096b8f3a21cd49e625bb51648620966433c11f5f20ee74c50ad109fa921. 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/USTCD1069445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb43fa2b6836428b2859fe411ff89e4172a660d1ea222a64f3ef0a956a677c84. 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/USTCD1069446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314fec28c13adf94fba284721360e2833ef3f56d5d887e1d689bc558e94fe041. 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/USTCD1069447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2acdb1806b450ae7b832a0eab550368a1007dccc9825f32347aac2f2865756c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/USTCD1073574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0febd482f833557be3a707ad3f172a3c4307534cbb0c7c8b5f0050b2f11b7c0f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:06Z), 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/QZBRF1807769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0e9a338027b6bba19dcc12e588d9778aa5fc7da726459d513584d787c55ea7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZBRF1807770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabefb869ba7ef57b2e7854e6c53419d3456d2cc4c6c2b97a88990d2578f634e4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES52400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2c6c906b374d6f2dc32d9e5dbafe568cd98daaf9d49a7cb5b64e78c732695b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES52400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1ea929be7cea7ec9ee1af43b071ce22fbbd0fe67dc21f5f62b8af47b61e25f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES52400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5ed54a5372328e4e29448acafb4b0769524f03dbe2ec995fbe86a065eb4929. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:20:38Z), 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/QZES52400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099aa8ca58bc89abe394b09672d86a400fd814ea092e2f38f90d50a8fbecbc9b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES52400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213e77c4da5de7f0b37895e74204fc38495fe4e5e9c544c2ce97ef6aa1ca8e16. 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/QZES52400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89104c270161ccc515abfebfd5f2527b78685927b0201bbb21a422f162194f17. 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/QZES52400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171ba09b247502b14f92f608f239d7ad16dab86c9381fc7d813b7c9df283a833. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES52400099.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d780e564b0953b3481fe2ed50094e42934afbfb14dfb789746487287366b890. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZES52400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57cd9881379a3e7e0d5cf89525459684f928500518aa37eb8d2b79b670bd2df. 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/QZES52400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c24ec6d4184141dce65ff3771431c89a28749fddfd4bd5627262d5d69b0878e. 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/QZES52400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5938c588b7727b2991d89a1c74eab69870e58d1822487d6b7079bc6e1255fe3. 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/QZES52400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e485c07d2d8f86d5a9ef1268c23e14162dbc83ada5c258b6582e1af8e72cbb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES52400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280542cca5a166f4cf1586a2d51cfd0d93c3977b456fa3fe9dabd09e3f612b7d. 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/QZES52400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc439e643507603eaf2a0c1698d859990b257b438559f7ce587504e2cefe0089c. 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/QZES52400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e558024b05fee6cf1002797a6f1037a4d7bd9a17ca5eefc128e58c9f9541193. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:30:52Z), 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/QZES52400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad09985bf2a72845c19c01dba6303f6773c2635dee89d03198da00df5eff3a7e. 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/QZES52400108.