Kelsey Cook is an American stand-up comedian. Her second comedy special, Mark Your Territory, was aired on Hulu and YouTube in February 2025. Career Cook began performing stand-up comedy while in c
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 0xd358ceef9b4e5281df99f59205adb612b9b49e143e5735e2dd145b3592106b25. 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/d0dc0c25-7c1e-4704-a071-d1cc89fd7653.json and https://artists.proofprofile.net/proofs/artist/d0dc0c25-7c1e-4704-a071-d1cc89fd7653.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 0xcf3347acb106460aee15a241a25ce8dc634ec9713f7091a6f2bddce6e6a9c9eb. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:20:48Z), 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/QZ5HC1800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8146e9bdafa33c4efd2cd076288b86f4d8645d84ca7179a0050aeb254947b92f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QZ5HC1800352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014a0615bde925889760df868d889b6ffae758757c78da786a98128148713f07. 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/QZ5HC1800353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f96bffacaf9cd3281329857b9b2d29ce4e9fb69498ae014ca1f9f1faffac778. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5HC1800354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66dc45a4a7e9759c31cb55b8bbecc07b85ec5ae6003afe97934865a7eb590c6. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:49:47Z), 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/QZ5HC1800356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7db1d30f212735755468025548b4a66ad47fde6370752073def18e80378a35. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:56:41Z), 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/QZ5HC1800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac85b9008a79b6a0070ce425563810a73d75354d1989ec98fd04ddbc66f508db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ5HC1800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be8cde61087409c0faa0b34c510bae2318c7c9c5a75e8b63a7893f9cfa54986. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/QZ5HC2135902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65cded8ec9ac50bf18985c37a087736dfeec3bb4427e922bf3e69b545a1e714. 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/QZ5HC2135903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78085af3d6d54b21385b66a67d2669f7e7428488ad2c69db5ff78d2c60cfc76a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:02Z), 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/QZ5HC2135904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7113ffcc67f8c2b9753e1acdd178e7cfa9ce88636b53b4cd82344b6c323d589. 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/QZ5HC2135905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb3990863ff0b3f731ad9fa4c8004a2bf67315cd178453802f850bd32628449. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ5HC2135906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851bb983306a3343ae3143bda18724b054df0cbce6f19db785fe2e332d2f5212. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZ5HC2135907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046469016656ba5c713ec5e7d42800e7f47fc1b43548b591b3be11a7cb586dd8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ5HC2135908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36816cc97585e9f5f78393f17509e5cd2d1b74fa1e69f5767eca44ccc5e64d8. 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/QZ5HC2135909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a7760ca1c3245c58bc060cfffbaafa00ff8a29e857c2fd19c3535a08ebb0fc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ5HC2135910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed2832120d67fe1b838ac4567939e00c79f7619591dd9ed00999044142ec053. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ5HC2135911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0da76366e087f3be991a305f228a64c56b8549d78bff466c472305ddbf9d5a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZ5HC2135912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402f4e748296b36342040497d32646b62d6e2963aff7a49c61ab2f72a25af8b4. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:43:38Z), 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/QZ5HC2135913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d4f76df0fc7df37429b2b710d61b6c9638360457a176704b4ceb111e1c6636. 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/QZ5HC2135914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6493e1ac36281be60ee6b0fcb9036190755b71b784f20d0c2d21ceb480852cd8. 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/QZ5HC2135916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f33c62a64b033d6578ec89607667ca1b456c5047e0d3726d675b236d62b9c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:10:14Z), 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/QZ5HC2135917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97b4ad9c404519a35918efd66c8825ab8c198df1a96127feef253a1ef298e20. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZ5HC2135918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfd84251b77ed555c443af00e93b2ce860b7f52844ec3493368d25ff101034d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:12Z), 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/QZ5HC2135919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b0343050c7875e4986be49a176c1ebf2b2f1c3b9f2950491f0b479e6cfde7. 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/QZ5HC2161201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08179e8da5445d691d578bdc07bee6d6e698dc6d0663d27c6e3a8d47f48074. 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/QZ5HC2161202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e2aa46d7a21387d291593161045fcce4987b40b42a298e58c2abfe7bfca3de. 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/QZ5HC2161203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732ce1e637347e4900ecc3348f98a9cb736a54d413a2ad99dec88c138a1d35f. 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/QZ5HC2161204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45725cac0392687814f948e36f9e588b0995fb3900fbff459e9d169584add331. 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/QZ5HC2161205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec0ccff658e8bc5cc16985c1e58b6091282628875fc82ce2edb6091bb65f67. 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/QZ5HC2161206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe883ecffe56790d31724937809c130189efaad412172bc7d1cf6d696a4422b8a. 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/QZ5HC2161207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84762c17248e4caa1bff5947dccf1dd9e30e539c748c30cbb49e7f45c89c7538. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZ5HC2161208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834265904bad36be85aa32be0c0e144cac66b0dd05337587b95590cd3545ec78. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZ5HC2161209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e31155070c4e5d1f2c16a2ad1c41f8cc963ea36fa18f83dca9c1aed3b0f6a6f. 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/QZ5HC2161210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94706ac1da927d2214c436ddbd73e865a1ceb61899a1351f2a5293f07692da9. 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/QZ5HC2161211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5587b78c6b898fb4d2c460eb1210351485e90b4b27b8243720f9a07f47e4c9. 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/QZ5HC2161212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de67b29f29e5ad2b4c41ba2ef31285ec5fa1483ad4281ccd8ac5d82e310f4ec. 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/QZ5HC2161213.