{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:JOAHDNADHWVFWP34R2JF4QQT4C","short_pith_number":"pith:JOAHDNAD","canonical_record":{"source":{"id":"1804.03771","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-11T01:12:17Z","cross_cats_sorted":[],"title_canon_sha256":"d7814b66f6cc13343b11f0dc60c6c74e31da9cb88de42d8808295180899070bc","abstract_canon_sha256":"dfecd56b62dd91a047507b794799ff17ed36477db73c42075a6a811bef0cda88"},"schema_version":"1.0"},"canonical_sha256":"4b8071b4033daa5b3f7c8e925e4213e0a987a34df48f32d22c946af0dbad1ac6","source":{"kind":"arxiv","id":"1804.03771","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03771","created_at":"2026-05-18T00:14:45Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03771v2","created_at":"2026-05-18T00:14:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03771","created_at":"2026-05-18T00:14:45Z"},{"alias_kind":"pith_short_12","alias_value":"JOAHDNADHWVF","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JOAHDNADHWVFWP34","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JOAHDNAD","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:JOAHDNADHWVFWP34R2JF4QQT4C","target":"record","payload":{"canonical_record":{"source":{"id":"1804.03771","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-11T01:12:17Z","cross_cats_sorted":[],"title_canon_sha256":"d7814b66f6cc13343b11f0dc60c6c74e31da9cb88de42d8808295180899070bc","abstract_canon_sha256":"dfecd56b62dd91a047507b794799ff17ed36477db73c42075a6a811bef0cda88"},"schema_version":"1.0"},"canonical_sha256":"4b8071b4033daa5b3f7c8e925e4213e0a987a34df48f32d22c946af0dbad1ac6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:45.898183Z","signature_b64":"HbNx2V+0gQ7CkORu5SvDH+epuZyJYr691+82tkfSEbMLPuoiBNJyw7sUZ2JBzdare67tczLNm54QXs6kOEkOBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b8071b4033daa5b3f7c8e925e4213e0a987a34df48f32d22c946af0dbad1ac6","last_reissued_at":"2026-05-18T00:14:45.897603Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:45.897603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.03771","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":"2026-05-18T00:14:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4EjFQH8viWNlfP0NEKCv8lvUk08WMBjiSAi1goJfxjLa9Ngiqa6f/mlkuG6QGGbpEZf33wroH8SjYjoS30PKCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:32:03.268296Z"},"content_sha256":"177c3af645654e9dd86aa290eb58e91708078d6534b9e7b5e24eac84af612773","schema_version":"1.0","event_id":"sha256:177c3af645654e9dd86aa290eb58e91708078d6534b9e7b5e24eac84af612773"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:JOAHDNADHWVFWP34R2JF4QQT4C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time resolved spectroscopic observations of an M-dwarf flare star EV Lacertae during a flare","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Daisaku Nogami, Hiroyuki Maehara, Kai Ikuta, Kazunari Shibata, Kosuke Namekata, Satoshi Honda, Shota Notsu, Yuta Notsu","submitted_at":"2018-04-11T01:12:17Z","abstract_excerpt":"We have performed 5 night spectroscopic observation of the Halpha line of EV Lac with a medium wavelength resolution (R~ 10,000) using the 2m Nayuta telescope at the Nishi-Harima Astronomical Observatory. EV Lac always possesses the Halpha emission line; however, its intensity was stronger on August 15, 2015 than during other four-night periods. On this night, we observed a rapid rise (~ 20min) and a subsequent slow decrease (~ 1.5h) of the emission-line intensity of Halpha, which was probably caused by a flare. We also found an asymmetrical change in the Halpha line on the same night. The enh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03771","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":"2026-05-18T00:14:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QqA2Ets849SeT3C5W2e/p9n53nVrS8dYJImtWgd/YwiaDGA31hIYZ1zwRDVpiaj+sxSMbZXmFanuxr0oqaQNAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T12:32:03.268677Z"},"content_sha256":"e6aed5f0f0411e386db90cd8d828e7a8053580dff47b0ea14265461903e5e511","schema_version":"1.0","event_id":"sha256:e6aed5f0f0411e386db90cd8d828e7a8053580dff47b0ea14265461903e5e511"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JOAHDNADHWVFWP34R2JF4QQT4C/bundle.json","state_url":"https://pith.science/pith/JOAHDNADHWVFWP34R2JF4QQT4C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JOAHDNADHWVFWP34R2JF4QQT4C/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":"2026-05-28T12:32:03Z","links":{"resolver":"https://pith.science/pith/JOAHDNADHWVFWP34R2JF4QQT4C","bundle":"https://pith.science/pith/JOAHDNADHWVFWP34R2JF4QQT4C/bundle.json","state":"https://pith.science/pith/JOAHDNADHWVFWP34R2JF4QQT4C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JOAHDNADHWVFWP34R2JF4QQT4C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JOAHDNADHWVFWP34R2JF4QQT4C","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":"dfecd56b62dd91a047507b794799ff17ed36477db73c42075a6a811bef0cda88","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-11T01:12:17Z","title_canon_sha256":"d7814b66f6cc13343b11f0dc60c6c74e31da9cb88de42d8808295180899070bc"},"schema_version":"1.0","source":{"id":"1804.03771","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03771","created_at":"2026-05-18T00:14:45Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03771v2","created_at":"2026-05-18T00:14:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03771","created_at":"2026-05-18T00:14:45Z"},{"alias_kind":"pith_short_12","alias_value":"JOAHDNADHWVF","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JOAHDNADHWVFWP34","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JOAHDNAD","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:e6aed5f0f0411e386db90cd8d828e7a8053580dff47b0ea14265461903e5e511","target":"graph","created_at":"2026-05-18T00:14:45Z","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":"We have performed 5 night spectroscopic observation of the Halpha line of EV Lac with a medium wavelength resolution (R~ 10,000) using the 2m Nayuta telescope at the Nishi-Harima Astronomical Observatory. EV Lac always possesses the Halpha emission line; however, its intensity was stronger on August 15, 2015 than during other four-night periods. On this night, we observed a rapid rise (~ 20min) and a subsequent slow decrease (~ 1.5h) of the emission-line intensity of Halpha, which was probably caused by a flare. We also found an asymmetrical change in the Halpha line on the same night. The enh","authors_text":"Daisaku Nogami, Hiroyuki Maehara, Kai Ikuta, Kazunari Shibata, Kosuke Namekata, Satoshi Honda, Shota Notsu, Yuta Notsu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-11T01:12:17Z","title":"Time resolved spectroscopic observations of an M-dwarf flare star EV Lacertae during a flare"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03771","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":"sha256:177c3af645654e9dd86aa290eb58e91708078d6534b9e7b5e24eac84af612773","target":"record","created_at":"2026-05-18T00:14:45Z","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":"dfecd56b62dd91a047507b794799ff17ed36477db73c42075a6a811bef0cda88","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-04-11T01:12:17Z","title_canon_sha256":"d7814b66f6cc13343b11f0dc60c6c74e31da9cb88de42d8808295180899070bc"},"schema_version":"1.0","source":{"id":"1804.03771","kind":"arxiv","version":2}},"canonical_sha256":"4b8071b4033daa5b3f7c8e925e4213e0a987a34df48f32d22c946af0dbad1ac6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4b8071b4033daa5b3f7c8e925e4213e0a987a34df48f32d22c946af0dbad1ac6","first_computed_at":"2026-05-18T00:14:45.897603Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:45.897603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HbNx2V+0gQ7CkORu5SvDH+epuZyJYr691+82tkfSEbMLPuoiBNJyw7sUZ2JBzdare67tczLNm54QXs6kOEkOBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:45.898183Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.03771","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:177c3af645654e9dd86aa290eb58e91708078d6534b9e7b5e24eac84af612773","sha256:e6aed5f0f0411e386db90cd8d828e7a8053580dff47b0ea14265461903e5e511"],"state_sha256":"3ba252ed87a5fd4dfebd24389bc0773044ff3f189f7777738ae358d9a8f3e0fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IeMfp6hrSpOWzFiJTtJp/z5pJA38cVFWbyrhDRf6+G5k6L2VfnTvmZBOrHe1t6Throoht0WJh6tI/6Kwo+1HBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T12:32:03.271077Z","bundle_sha256":"449620d5fc38f0ed9f36344a84a88948491956d10c607eace6cccc2690f06e53"}}