{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:G5XC4XZFK5IIXYJ5TLVOJNYY3W","short_pith_number":"pith:G5XC4XZF","canonical_record":{"source":{"id":"1202.4472","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-20T21:27:23Z","cross_cats_sorted":[],"title_canon_sha256":"50e8749b0f6041551c5abf27bde90c13f36beeb9c19367fd9fb8bf4331c7868e","abstract_canon_sha256":"ab3a8f5e9a007d040c4b8f54c00812385015a23f0cdcf6d47c250176fc8bcad5"},"schema_version":"1.0"},"canonical_sha256":"376e2e5f2557508be13d9aeae4b718dd808d88084826d49c859fa6e4e5fcac7e","source":{"kind":"arxiv","id":"1202.4472","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4472","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4472v2","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4472","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"G5XC4XZFK5II","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"G5XC4XZFK5IIXYJ5","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"G5XC4XZF","created_at":"2026-05-18T12:27:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:G5XC4XZFK5IIXYJ5TLVOJNYY3W","target":"record","payload":{"canonical_record":{"source":{"id":"1202.4472","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-20T21:27:23Z","cross_cats_sorted":[],"title_canon_sha256":"50e8749b0f6041551c5abf27bde90c13f36beeb9c19367fd9fb8bf4331c7868e","abstract_canon_sha256":"ab3a8f5e9a007d040c4b8f54c00812385015a23f0cdcf6d47c250176fc8bcad5"},"schema_version":"1.0"},"canonical_sha256":"376e2e5f2557508be13d9aeae4b718dd808d88084826d49c859fa6e4e5fcac7e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:23.221287Z","signature_b64":"iHWWwLVm+Fr0Yw85hluwpHq45ONS7VWMiUMZjMHjCIWX5nWF6b2YfozcNUTc9Ui2RI9U38rgPGJ/f78LXBKnAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"376e2e5f2557508be13d9aeae4b718dd808d88084826d49c859fa6e4e5fcac7e","last_reissued_at":"2026-05-18T01:58:23.220643Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:23.220643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.4472","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rhn+wKXqTUUCbAkVE5HMoGdJPUdQgnpdtFy75yYDJIBtlldzgnnqMw7sARgpEFe4571lh+9tNr3IjH034T0cBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:03:00.276879Z"},"content_sha256":"20cf5153a2d91b061445b66695fc214c3d98a9e1656e472a38e9754e0eaf7835","schema_version":"1.0","event_id":"sha256:20cf5153a2d91b061445b66695fc214c3d98a9e1656e472a38e9754e0eaf7835"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:G5XC4XZFK5IIXYJ5TLVOJNYY3W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetic field, differential rotation and activity of the hot-Jupiter hosting star HD 179949","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A.C. Cameron, A. Lanza, A. Maggio, A. Martinez Fiorenzano, C. Moutou, D. Bohlender, E.L. Shkolnik, I Pagano, J.-F. Donati, M. Jardine, R. Fares, S. Dieters","submitted_at":"2012-02-20T21:27:23Z","abstract_excerpt":"HD 179949 is an F8V star, orbited by a giant planet at ~8 R* every 3.092514 days. The system was reported to undergo episodes of stellar activity enhancement modulated by the orbital period, interpreted as caused by Star-Planet Interactions (SPIs). One possible cause of SPIs is the large-scale magnetic field of the host star in which the close-in giant planet orbits.\n  In this paper we present spectropolarimetric observations of HD 179949 during two observing campaigns (2009 September and 2007 June). We detect a weak large-scale magnetic field of a few Gauss at the surface of the star. The fie"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4472","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:58:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PYOapbwDWgaEg04RH6kCxZIZ09LPiT+h/pgwmW3fsM9txLsKdPr2VIMkDFkev5sfEBvoErC1JgnPNyE9dcmzAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:03:00.277565Z"},"content_sha256":"da80db0862b5bb8f3e382a3b3c5833cdb2275f50bb6b2e597783af0888402459","schema_version":"1.0","event_id":"sha256:da80db0862b5bb8f3e382a3b3c5833cdb2275f50bb6b2e597783af0888402459"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W/bundle.json","state_url":"https://pith.science/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W/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":"2026-06-04T23:03:00Z","links":{"resolver":"https://pith.science/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W","bundle":"https://pith.science/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W/bundle.json","state":"https://pith.science/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G5XC4XZFK5IIXYJ5TLVOJNYY3W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:G5XC4XZFK5IIXYJ5TLVOJNYY3W","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":"ab3a8f5e9a007d040c4b8f54c00812385015a23f0cdcf6d47c250176fc8bcad5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-20T21:27:23Z","title_canon_sha256":"50e8749b0f6041551c5abf27bde90c13f36beeb9c19367fd9fb8bf4331c7868e"},"schema_version":"1.0","source":{"id":"1202.4472","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4472","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4472v2","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4472","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"G5XC4XZFK5II","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"G5XC4XZFK5IIXYJ5","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"G5XC4XZF","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:da80db0862b5bb8f3e382a3b3c5833cdb2275f50bb6b2e597783af0888402459","target":"graph","created_at":"2026-05-18T01:58:23Z","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"},"paper":{"abstract_excerpt":"HD 179949 is an F8V star, orbited by a giant planet at ~8 R* every 3.092514 days. The system was reported to undergo episodes of stellar activity enhancement modulated by the orbital period, interpreted as caused by Star-Planet Interactions (SPIs). One possible cause of SPIs is the large-scale magnetic field of the host star in which the close-in giant planet orbits.\n  In this paper we present spectropolarimetric observations of HD 179949 during two observing campaigns (2009 September and 2007 June). We detect a weak large-scale magnetic field of a few Gauss at the surface of the star. The fie","authors_text":"A.C. Cameron, A. Lanza, A. Maggio, A. Martinez Fiorenzano, C. Moutou, D. Bohlender, E.L. Shkolnik, I Pagano, J.-F. Donati, M. Jardine, R. Fares, S. Dieters","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-20T21:27:23Z","title":"Magnetic field, differential rotation and activity of the hot-Jupiter hosting star HD 179949"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4472","kind":"arxiv","version":2},"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":"sha256:20cf5153a2d91b061445b66695fc214c3d98a9e1656e472a38e9754e0eaf7835","target":"record","created_at":"2026-05-18T01:58:23Z","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":"ab3a8f5e9a007d040c4b8f54c00812385015a23f0cdcf6d47c250176fc8bcad5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-02-20T21:27:23Z","title_canon_sha256":"50e8749b0f6041551c5abf27bde90c13f36beeb9c19367fd9fb8bf4331c7868e"},"schema_version":"1.0","source":{"id":"1202.4472","kind":"arxiv","version":2}},"canonical_sha256":"376e2e5f2557508be13d9aeae4b718dd808d88084826d49c859fa6e4e5fcac7e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"376e2e5f2557508be13d9aeae4b718dd808d88084826d49c859fa6e4e5fcac7e","first_computed_at":"2026-05-18T01:58:23.220643Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:23.220643Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iHWWwLVm+Fr0Yw85hluwpHq45ONS7VWMiUMZjMHjCIWX5nWF6b2YfozcNUTc9Ui2RI9U38rgPGJ/f78LXBKnAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:23.221287Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4472","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:20cf5153a2d91b061445b66695fc214c3d98a9e1656e472a38e9754e0eaf7835","sha256:da80db0862b5bb8f3e382a3b3c5833cdb2275f50bb6b2e597783af0888402459"],"state_sha256":"b201c945ebf732df0bace8cfed983001b8190b2ed665d51d66e13761866727e9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3U6vJwdSSmeXVYadbQlXoK3YRkalhIRCag8oR7wef3SOLtLl+6/gap562R0dOF9XEIUXZ5ZochMbEB6BCXZjDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T23:03:00.280497Z","bundle_sha256":"5b1da9009c1adee95256f8eb99b8207a782fb83ff18e92066d50f5f85e616ed9"}}