Kathleen Madigan (born September 30, 1965) is an American stand-up comedian and TV personality. In addition to her stand-up comedy performances, she is a regular guest on a variety of U.S. television
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 0x39ba878fedf81357eb7a68c2b1483714caa9960629b3a62272e1eba03f373e11. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c17cb72-c17f-46b3-bfae-267625acf78b.json and https://artists.proofprofile.net/proofs/artist/9c17cb72-c17f-46b3-bfae-267625acf78b.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 0xf96ddcc6b3746958e99879cb3bbd9195e96fb8ad59029eaec6b759fdcfd45484. 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/USA370615663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5cb5dc831d2db3ab6abc68ac3be378bba500adc692189d64abe0ce90e73601. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:52Z), 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/USA370615665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687be2a7c7a9afa0dc3c8ff864f03488e29ef7879ada8b213f178e4b192879c7. 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/USA370615666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c338bb597ecd0a54200eff958ed7e28d71ee434b5b1fa55b126769fbe2d7553. 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/USA370615667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d82133320e3d040f6f656e4a8384b15d05328ff9ea1c0bc95e512dd34e9c88. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USA370615668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9512e6bed68c8ee2dd28415642c4ba33f90b8ed02f57a708738f57eff0b43083. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA370615669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37958c2192128372589a4012fc0c155c058866aded53e0b2918589b42c9361cf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:31Z), 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/USA370615670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb071421c03441c29c2fd6a7bbecdf7495cd143b5e26b85f44ded558db908716c. 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/USA370615671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae622b3773a68310eff285d8c5a896ba974c4f5d2e9f26fd46038d25b6e6860. 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/USA370615672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6501ad19e887052b88788e5b00dd78759c90f9a3aaf7f7a369ccc4af11827e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USA370615674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197d07f552a4196e9f214669c1df93f54733227a4d47191d6e86deb5a50a228d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:36:46Z), 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/USA370615675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9ad1eec7f19f4115bfbd41d24dd77a58186af6e54e98bf505d3c948e91afa7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH2318278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e30b566709bb59e19c3a691383adcde672b578f826ff869ca1f7d9df400a060. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:25Z), 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/USCGH2318279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cb5f7e77bdd8cbd677bb0e6efa79c4b3b4e447b342c5e90f9232eedb9c4ab8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:33:03Z), 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/USCGH2318280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52d8031df65dfa5f63cfe0a1d3b00734fa5462dd1e5e252518645e9329cb734. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:13Z), 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/USCGH2318281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241e10dc412d7bf6094507688287837bbfb3eb977b5db7ada1bb50dba58b4695. 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/USCGH2318282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaef8f829302114162dd29ca4f7da33bfe09cb14754000e7a1724d4f1136195c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH2318283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c7748bb01b22f63f6579274517e79dc6ee9feb29886d17f6df96d8a744c15. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:46Z), 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/USCGH2318284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a36e64ee147935c6af4fef4ddaffc4cfabbe9a8072f75fe4cfa7225b610012. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USCGH2318285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38733795c74989e1a8b50e0ef60ea2bc4e128f3aa7cfd8deaaa5277dc82bec4e. 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/USCGH2318286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0abc6b658c7dd6a2db4e3402c50d776dae6aba152c6ee623244056fb020aab. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ5HC1906401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd15215585015ee7076baa88e58b67003af47db0e252f7be6f397811b515e9ca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ5HC1906402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe520cb872b4b50d7e867c4ed3df44b27ad4a427ce3a3ba05527e19733c2150f1. 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/QZ5HC1906403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5a52f1ed3b52351611c616fb007465beb3fecf360aa219956c8c60af057169. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:00:54Z), 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/QZ5HC1906404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729935fb9ac2404d7d7a6af60507f81aa7ccd7180932d6b14d7fa7f8527eddd. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZ5HC1906405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2087765e7d19c7e286f2af58ca8ced9956df4cc0a58ea8680374094d2e204. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ5HC1906406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1b9c0c776f6e7faf5da0afe940b6258ea0e5435d5d2ddabe87968055ce4a1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:05:57Z), 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/QZ5HC1906407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810c866aa967afbe6801350c087ed32e3b50ad5848fd1540eefeb6b83e28e662. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5HC1906408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81844b52b007000356a24c2998c5e0927afc0ade2e4d0d8f8916ba2c7576e7b3. 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/QZ5HC1906409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de6403661c7d4479593943000237fb4af27c29f187e1a1aa67df1cac1611fd6. 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/QZ5HC1906410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57947f463067d2983935510f890910a7c5d89a2953ae4b6d9b6e2bdf0e3856db. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ5HC1906411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa501947a02cee321aeac00fe5668134be5aaea24e01449fc9324920d50dff49d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:10Z), 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/QZ5HC1906412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3596f670eeb87dd62458de3e5b14fd7419163cff01b114d6c8a45f046e5348a0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ5HC1906413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5e3111d3b162c3ee23145a927068aa159044c92d4f8a8b4fc050e29d1fe411. 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/QZ5HC1906414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6532807cbc9f015b82f4eef6db4cc78cfb9a442778000888ebfc6046a9f3a0e. 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/QM6P42495689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a611249bc66670c0e99ac01b516163c05abb82675785db0d8b8da095c4e4d52. 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/QM6P42495692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba5a152d77219a3d9a15f0f6540e595b313d41e8f538c587de6c87f9ea52117. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QM6P42495696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5073785985f7afab41e5b26acdfa57175ca598baa60c7a9c8ac0bc4f99f7fc. 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/QM6P42495698.