{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:MXGIQFIB4KU2IAQS4MN7QKLSAZ","short_pith_number":"pith:MXGIQFIB","canonical_record":{"source":{"id":"2505.05260","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-08T14:06:00Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c156414eb30e53097fc79355772040da7b915deb4f93b5980846ec5e02ffd7c8","abstract_canon_sha256":"5f746214cc7ecbea852455c22d77b3e0169f392101cc60058d1ccb6905b82972"},"schema_version":"1.0"},"canonical_sha256":"65cc881501e2a9a40212e31bf829720651bb5c741c8bd22fb73a84799fb89a66","source":{"kind":"arxiv","id":"2505.05260","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.05260","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"arxiv_version","alias_value":"2505.05260v1","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.05260","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"pith_short_12","alias_value":"MXGIQFIB4KU2","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"pith_short_16","alias_value":"MXGIQFIB4KU2IAQS","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"pith_short_8","alias_value":"MXGIQFIB","created_at":"2026-07-05T11:00:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:MXGIQFIB4KU2IAQS4MN7QKLSAZ","target":"record","payload":{"canonical_record":{"source":{"id":"2505.05260","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-08T14:06:00Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"c156414eb30e53097fc79355772040da7b915deb4f93b5980846ec5e02ffd7c8","abstract_canon_sha256":"5f746214cc7ecbea852455c22d77b3e0169f392101cc60058d1ccb6905b82972"},"schema_version":"1.0"},"canonical_sha256":"65cc881501e2a9a40212e31bf829720651bb5c741c8bd22fb73a84799fb89a66","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:00:21.622172Z","signature_b64":"b0i3ISY3gSleWwWK3LE0kbC+qfceuL/aUWj27qXSBSnxP57/VX6VBFVbHMaT8BOhSjKLYzExFMjLgyVEz/n1Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65cc881501e2a9a40212e31bf829720651bb5c741c8bd22fb73a84799fb89a66","last_reissued_at":"2026-07-05T11:00:21.621390Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:00:21.621390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.05260","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:00:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7+zVzyuSL5KQRle2LXg89qH25GTMtc9s2smRx4gpXTmlbO9K+13JU2YoJonxgeofki8+gavQDqO5TIYJr7GjCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:05:56.937906Z"},"content_sha256":"a0684d71155bf5a8350e977ca783c5e4be1476160c244eb03bc7ba2331d36018","schema_version":"1.0","event_id":"sha256:a0684d71155bf5a8350e977ca783c5e4be1476160c244eb03bc7ba2331d36018"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:MXGIQFIB4KU2IAQS4MN7QKLSAZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"No Planet around the K Giant Star 42 Draconis","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Artie P. Hatzes, Jana K\\\"ohler, Marie Karjalainen, Michael Hartmann, Volker Perdelwitz","submitted_at":"2025-05-08T14:06:00Z","abstract_excerpt":"Published radial velocity (RV) measurements of the K giant star 42 Dra reveal variations consistent with a 3.9 M_Jup mass companion in a 479-d orbit. This exoplanet can be confirmed if these variations are long-lived and coherent. Continued monitoring may also reveal other companions. We have acquired additional RV measurements of 42 Dra spanning fifteen years. Periodogram analyses were used to investigate the stability of the planet RV signal. We also investigated variations in the spectral line shapes using the bisector velocity span as well as infrared photometry from the COBE mission. The "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.05260","kind":"arxiv","version":1},"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/2505.05260/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":"2026-07-05T11:00:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5F/LvHyBV6sN88B2vmtxjmHplAzBr1p30ej5e6+n8K4IgMxg1zMLTxjHJ3fmfrVmwCoVhMvF7szJVIdGHBTEBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:05:56.938289Z"},"content_sha256":"8b29fe9b153c7ec136043b4ca8fc39564d18d1e9b95e47f633148dfb07c556d5","schema_version":"1.0","event_id":"sha256:8b29fe9b153c7ec136043b4ca8fc39564d18d1e9b95e47f633148dfb07c556d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ/bundle.json","state_url":"https://pith.science/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ/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":"2026-07-09T05:05:56Z","links":{"resolver":"https://pith.science/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ","bundle":"https://pith.science/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ/bundle.json","state":"https://pith.science/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MXGIQFIB4KU2IAQS4MN7QKLSAZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MXGIQFIB4KU2IAQS4MN7QKLSAZ","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":"5f746214cc7ecbea852455c22d77b3e0169f392101cc60058d1ccb6905b82972","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-08T14:06:00Z","title_canon_sha256":"c156414eb30e53097fc79355772040da7b915deb4f93b5980846ec5e02ffd7c8"},"schema_version":"1.0","source":{"id":"2505.05260","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.05260","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"arxiv_version","alias_value":"2505.05260v1","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.05260","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"pith_short_12","alias_value":"MXGIQFIB4KU2","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"pith_short_16","alias_value":"MXGIQFIB4KU2IAQS","created_at":"2026-07-05T11:00:21Z"},{"alias_kind":"pith_short_8","alias_value":"MXGIQFIB","created_at":"2026-07-05T11:00:21Z"}],"graph_snapshots":[{"event_id":"sha256:8b29fe9b153c7ec136043b4ca8fc39564d18d1e9b95e47f633148dfb07c556d5","target":"graph","created_at":"2026-07-05T11:00:21Z","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/2505.05260/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Published radial velocity (RV) measurements of the K giant star 42 Dra reveal variations consistent with a 3.9 M_Jup mass companion in a 479-d orbit. This exoplanet can be confirmed if these variations are long-lived and coherent. Continued monitoring may also reveal other companions. We have acquired additional RV measurements of 42 Dra spanning fifteen years. Periodogram analyses were used to investigate the stability of the planet RV signal. We also investigated variations in the spectral line shapes using the bisector velocity span as well as infrared photometry from the COBE mission. The ","authors_text":"Artie P. Hatzes, Jana K\\\"ohler, Marie Karjalainen, Michael Hartmann, Volker Perdelwitz","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-08T14:06:00Z","title":"No Planet around the K Giant Star 42 Draconis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.05260","kind":"arxiv","version":1},"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:a0684d71155bf5a8350e977ca783c5e4be1476160c244eb03bc7ba2331d36018","target":"record","created_at":"2026-07-05T11:00:21Z","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":"5f746214cc7ecbea852455c22d77b3e0169f392101cc60058d1ccb6905b82972","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.EP","submitted_at":"2025-05-08T14:06:00Z","title_canon_sha256":"c156414eb30e53097fc79355772040da7b915deb4f93b5980846ec5e02ffd7c8"},"schema_version":"1.0","source":{"id":"2505.05260","kind":"arxiv","version":1}},"canonical_sha256":"65cc881501e2a9a40212e31bf829720651bb5c741c8bd22fb73a84799fb89a66","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65cc881501e2a9a40212e31bf829720651bb5c741c8bd22fb73a84799fb89a66","first_computed_at":"2026-07-05T11:00:21.621390Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:00:21.621390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b0i3ISY3gSleWwWK3LE0kbC+qfceuL/aUWj27qXSBSnxP57/VX6VBFVbHMaT8BOhSjKLYzExFMjLgyVEz/n1Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:00:21.622172Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.05260","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0684d71155bf5a8350e977ca783c5e4be1476160c244eb03bc7ba2331d36018","sha256:8b29fe9b153c7ec136043b4ca8fc39564d18d1e9b95e47f633148dfb07c556d5"],"state_sha256":"2449443b43b19d1c243fa5c9c0bc358dc761ae2eee14a8cb4ec7e63373701afd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5C7aMujFeYMY0bA6B1zWoHCs10fkV2MFFoOuaKghjw/9nj/FhnNbsTYIdJd7lShyyORSMqRAJ2kBauhdqymFBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T05:05:56.940298Z","bundle_sha256":"856f10f6e631278950c29787ecc8120ef18f3ec3efbfa3afc906cd4d50d3d40c"}}