{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:53EWMYBCNP3GJN7OZIHM2T3QXT","short_pith_number":"pith:53EWMYBC","canonical_record":{"source":{"id":"2502.16087","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-02-22T05:19:30Z","cross_cats_sorted":[],"title_canon_sha256":"6100dad5a89aacfa1892254c47c4d842c4aea6bc34c1807fa8f4f87379f3a5f4","abstract_canon_sha256":"779e6f117768be9f06632b3a08a5912811b02961d72139d1b9c0a86e9685c5e0"},"schema_version":"1.0"},"canonical_sha256":"eec96660226bf664b7eeca0ecd4f70bce13cde5cf981c2191582ef085acc7f24","source":{"kind":"arxiv","id":"2502.16087","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.16087","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"arxiv_version","alias_value":"2502.16087v3","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.16087","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"pith_short_12","alias_value":"53EWMYBCNP3G","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"pith_short_16","alias_value":"53EWMYBCNP3GJN7O","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"pith_short_8","alias_value":"53EWMYBC","created_at":"2026-07-05T10:21:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:53EWMYBCNP3GJN7OZIHM2T3QXT","target":"record","payload":{"canonical_record":{"source":{"id":"2502.16087","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-02-22T05:19:30Z","cross_cats_sorted":[],"title_canon_sha256":"6100dad5a89aacfa1892254c47c4d842c4aea6bc34c1807fa8f4f87379f3a5f4","abstract_canon_sha256":"779e6f117768be9f06632b3a08a5912811b02961d72139d1b9c0a86e9685c5e0"},"schema_version":"1.0"},"canonical_sha256":"eec96660226bf664b7eeca0ecd4f70bce13cde5cf981c2191582ef085acc7f24","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:21:30.642093Z","signature_b64":"k0iXbL3tsZ/gsirpru9w5d7vGEmaIbZrdYm4vQFZOjdd4IYplhJwdq5R3y3YWJfLKpAi11r1mHwP2uHz30wqBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eec96660226bf664b7eeca0ecd4f70bce13cde5cf981c2191582ef085acc7f24","last_reissued_at":"2026-07-05T10:21:30.641598Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:21:30.641598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.16087","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:21:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tee/woGaI5qhwfvVGk2uiu8Nsjz+POzBX9Nvoiqt1gpQnzDaWJO/dVjGdN5u4F715n8crUhlqlJQkabCLshTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:14:52.207504Z"},"content_sha256":"cffb782116c1c468ca5c2ae234eb0fe9d66e14fea2e43f74f56d6236e02adae6","schema_version":"1.0","event_id":"sha256:cffb782116c1c468ca5c2ae234eb0fe9d66e14fea2e43f74f56d6236e02adae6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:53EWMYBCNP3GJN7OZIHM2T3QXT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"TOI-6324b: An Earth-Mass Ultra-Short-Period Planet Transiting a Nearby M Dwarf","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Aaron Householder, Abby P. Shaum, Alex S. Polanski, Andrew W. Howard, Arpita Roy, Ashley D. Baker, Benjamin J. Fulton, Bradford Holden, Casey L. Brinkman, Christian Schwab, Corey Beard, Daniel Hey, Daniel Huber, David Charbonneau, David R. Ciardi, Diana Valencia, Edward Wishnow, Emily Gilbert, Erik A. Petigura, Fei Dai, Gautam Vasisht, George R. Ricker, Grant M. Hill, Gregory J. Gilbert, Gu{\\dh}mundur Stef\\'ansson, Heather A. Knutson, Howard Isaacson, Ian J. M. Crossfield, Jack Lubin, Jacob Luhn, Jingwen Zhang, J. M. Joel Ong, Joel Payne, Johanna Teske, John O'Meara, John Valliant, Jonathan Gomez Barrientos, Jon M. Jenkins, Joshua E. Schlieder, Joshua N. Winn, Josh Walawender, Judah Van Zandt, Karen A. Collins, Kimberly Paragas, Kodi Rider, Kyle Lanclos, Lauren M. Weiss, Leslie A. Rogers, Luke Handley, Martin M. Sirk, Matt Brown, Max Brodheim, Michael Greklek-McKeon, Mykhaylo Plotnykov, Nicholas Saunders, Paul Robertson, Rae Holcomb, Rena A. Lee, Renyu Hu, Roland Vanderspek, Russ R. Laher, Ryan Rubenzahl, Samuel Halverson, Sara Seager, Sharon Xuesong Wang, Sherry Yeh, Stephanie Striegel, Stephen Kaye, Steven Giacalone, Steven R. Gibson, Te Han, W. Garrett Levine, William Deich, Xavier Dumusque","submitted_at":"2025-02-22T05:19:30Z","abstract_excerpt":"We report the confirmation of TOI-6324 b, an Earth-sized (1.059 $\\pm$ 0.041 R$_\\oplus$) ultra-short-period (USP) planet orbiting a nearby ($\\sim$20 pc) M dwarf. Using the newly commissioned Keck Planet Finder (KPF) spectrograph, we have measured the mass of TOI-6324 b 1.17 $\\pm$ 0.22 M$_\\oplus$. Because of its extremely short orbit of just $\\sim$6.7 hours, TOI-6324 b is intensely irradiated by its M dwarf host, and is expected to be stripped of any thick, H/He envelope. We were able to constrain its interior composition and found an iron core mass fraction (CMF = 27$\\pm$37%) consistent with th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.16087","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.16087/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:21:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HtbmOTN6RBIsLGaiYVUtncXepq9FxKvMuX3Cufu3JpvGRhT16bzghoUTypD8OVzWAeSs4mxJoSp9eXjOrtcxCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T12:14:52.207881Z"},"content_sha256":"af0fec319be9d4daf1c570fda04f810664f92c7539f97be27a864f23e918d85a","schema_version":"1.0","event_id":"sha256:af0fec319be9d4daf1c570fda04f810664f92c7539f97be27a864f23e918d85a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/53EWMYBCNP3GJN7OZIHM2T3QXT/bundle.json","state_url":"https://pith.science/pith/53EWMYBCNP3GJN7OZIHM2T3QXT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/53EWMYBCNP3GJN7OZIHM2T3QXT/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T12:14:52Z","links":{"resolver":"https://pith.science/pith/53EWMYBCNP3GJN7OZIHM2T3QXT","bundle":"https://pith.science/pith/53EWMYBCNP3GJN7OZIHM2T3QXT/bundle.json","state":"https://pith.science/pith/53EWMYBCNP3GJN7OZIHM2T3QXT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/53EWMYBCNP3GJN7OZIHM2T3QXT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:53EWMYBCNP3GJN7OZIHM2T3QXT","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"779e6f117768be9f06632b3a08a5912811b02961d72139d1b9c0a86e9685c5e0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-02-22T05:19:30Z","title_canon_sha256":"6100dad5a89aacfa1892254c47c4d842c4aea6bc34c1807fa8f4f87379f3a5f4"},"schema_version":"1.0","source":{"id":"2502.16087","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.16087","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"arxiv_version","alias_value":"2502.16087v3","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.16087","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"pith_short_12","alias_value":"53EWMYBCNP3G","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"pith_short_16","alias_value":"53EWMYBCNP3GJN7O","created_at":"2026-07-05T10:21:30Z"},{"alias_kind":"pith_short_8","alias_value":"53EWMYBC","created_at":"2026-07-05T10:21:30Z"}],"graph_snapshots":[{"event_id":"sha256:af0fec319be9d4daf1c570fda04f810664f92c7539f97be27a864f23e918d85a","target":"graph","created_at":"2026-07-05T10:21:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2502.16087/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report the confirmation of TOI-6324 b, an Earth-sized (1.059 $\\pm$ 0.041 R$_\\oplus$) ultra-short-period (USP) planet orbiting a nearby ($\\sim$20 pc) M dwarf. Using the newly commissioned Keck Planet Finder (KPF) spectrograph, we have measured the mass of TOI-6324 b 1.17 $\\pm$ 0.22 M$_\\oplus$. Because of its extremely short orbit of just $\\sim$6.7 hours, TOI-6324 b is intensely irradiated by its M dwarf host, and is expected to be stripped of any thick, H/He envelope. We were able to constrain its interior composition and found an iron core mass fraction (CMF = 27$\\pm$37%) consistent with th","authors_text":"Aaron Householder, Abby P. Shaum, Alex S. Polanski, Andrew W. Howard, Arpita Roy, Ashley D. Baker, Benjamin J. Fulton, Bradford Holden, Casey L. Brinkman, Christian Schwab, Corey Beard, Daniel Hey, Daniel Huber, David Charbonneau, David R. Ciardi, Diana Valencia, Edward Wishnow, Emily Gilbert, Erik A. Petigura, Fei Dai, Gautam Vasisht, George R. Ricker, Grant M. Hill, Gregory J. Gilbert, Gu{\\dh}mundur Stef\\'ansson, Heather A. Knutson, Howard Isaacson, Ian J. M. Crossfield, Jack Lubin, Jacob Luhn, Jingwen Zhang, J. M. Joel Ong, Joel Payne, Johanna Teske, John O'Meara, John Valliant, Jonathan Gomez Barrientos, Jon M. Jenkins, Joshua E. Schlieder, Joshua N. Winn, Josh Walawender, Judah Van Zandt, Karen A. Collins, Kimberly Paragas, Kodi Rider, Kyle Lanclos, Lauren M. Weiss, Leslie A. Rogers, Luke Handley, Martin M. Sirk, Matt Brown, Max Brodheim, Michael Greklek-McKeon, Mykhaylo Plotnykov, Nicholas Saunders, Paul Robertson, Rae Holcomb, Rena A. Lee, Renyu Hu, Roland Vanderspek, Russ R. Laher, Ryan Rubenzahl, Samuel Halverson, Sara Seager, Sharon Xuesong Wang, Sherry Yeh, Stephanie Striegel, Stephen Kaye, Steven Giacalone, Steven R. Gibson, Te Han, W. Garrett Levine, William Deich, Xavier Dumusque","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-02-22T05:19:30Z","title":"TOI-6324b: An Earth-Mass Ultra-Short-Period Planet Transiting a Nearby M Dwarf"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.16087","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:cffb782116c1c468ca5c2ae234eb0fe9d66e14fea2e43f74f56d6236e02adae6","target":"record","created_at":"2026-07-05T10:21:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"779e6f117768be9f06632b3a08a5912811b02961d72139d1b9c0a86e9685c5e0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-02-22T05:19:30Z","title_canon_sha256":"6100dad5a89aacfa1892254c47c4d842c4aea6bc34c1807fa8f4f87379f3a5f4"},"schema_version":"1.0","source":{"id":"2502.16087","kind":"arxiv","version":3}},"canonical_sha256":"eec96660226bf664b7eeca0ecd4f70bce13cde5cf981c2191582ef085acc7f24","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eec96660226bf664b7eeca0ecd4f70bce13cde5cf981c2191582ef085acc7f24","first_computed_at":"2026-07-05T10:21:30.641598Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:21:30.641598Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k0iXbL3tsZ/gsirpru9w5d7vGEmaIbZrdYm4vQFZOjdd4IYplhJwdq5R3y3YWJfLKpAi11r1mHwP2uHz30wqBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:21:30.642093Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.16087","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cffb782116c1c468ca5c2ae234eb0fe9d66e14fea2e43f74f56d6236e02adae6","sha256:af0fec319be9d4daf1c570fda04f810664f92c7539f97be27a864f23e918d85a"],"state_sha256":"581a6b8a231316d43cccdb711f2cab18bbc1c9fa0d2ef508cb57d36e425d6378"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b2HsCAeqyvuBFWJvYdHDV0y2Bs4gM67kj7SPrP8Rdsa7pPZ9VsNINR6h1BCQ26Ht6gIb2ZiFXe7pyvVPzbHOCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T12:14:52.209810Z","bundle_sha256":"04f6f50745fd551b89562991b47cfbe8e712ac3854bd8b3bbdc4927e91389976"}}