{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:KX4EZJ2HIFIOX3ZHTS75DW45TH","short_pith_number":"pith:KX4EZJ2H","canonical_record":{"source":{"id":"1307.3502","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T16:09:05Z","cross_cats_sorted":[],"title_canon_sha256":"1a7617d51cefc3bdcbfdea95f4b0306368059e664b8604bd5b481a719423f76c","abstract_canon_sha256":"955b828a6db89dd7077a339b239b09dd10f9382a640123e032762024035f0939"},"schema_version":"1.0"},"canonical_sha256":"55f84ca7474150ebef279cbfd1db9d99d07968e486b65eb9cfda162b1b59a0d7","source":{"kind":"arxiv","id":"1307.3502","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3502","created_at":"2026-05-18T03:18:39Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3502v1","created_at":"2026-05-18T03:18:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3502","created_at":"2026-05-18T03:18:39Z"},{"alias_kind":"pith_short_12","alias_value":"KX4EZJ2HIFIO","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"KX4EZJ2HIFIOX3ZH","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"KX4EZJ2H","created_at":"2026-05-18T12:27:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:KX4EZJ2HIFIOX3ZHTS75DW45TH","target":"record","payload":{"canonical_record":{"source":{"id":"1307.3502","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T16:09:05Z","cross_cats_sorted":[],"title_canon_sha256":"1a7617d51cefc3bdcbfdea95f4b0306368059e664b8604bd5b481a719423f76c","abstract_canon_sha256":"955b828a6db89dd7077a339b239b09dd10f9382a640123e032762024035f0939"},"schema_version":"1.0"},"canonical_sha256":"55f84ca7474150ebef279cbfd1db9d99d07968e486b65eb9cfda162b1b59a0d7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:39.003499Z","signature_b64":"nEilh55pXiNrkREWUXHBpw10yhqcyzNEbdHk75NR7vdRqPyiYeonaWFvcLM40s+uGs2GOWhswaw1Qs2eN2PXDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"55f84ca7474150ebef279cbfd1db9d99d07968e486b65eb9cfda162b1b59a0d7","last_reissued_at":"2026-05-18T03:18:39.003026Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:39.003026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.3502","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":"2026-05-18T03:18:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1PEUjy8TKBOdb7W7s9fhj3W5arfchBv2lzg+ChqWKd83TCNGb2RkzlqGarx7VpoTReGKBduFr7FvUgZumcQjCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:50:19.638834Z"},"content_sha256":"aaf3f8a43b0261aacf742bc09c67b6c92180e6938cda147767b7b4af5282e76d","schema_version":"1.0","event_id":"sha256:aaf3f8a43b0261aacf742bc09c67b6c92180e6938cda147767b7b4af5282e76d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:KX4EZJ2HIFIOX3ZHTS75DW45TH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observational Asteroseismology of Hot Subdwarf Stars with the Mont4K/Kuiper Combination at the Steward Observatory Mount Bigelow Station","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"E.M. Green, G. Fontaine, M. Latour, P. Brassard, S. Charpinet, several undergraduate students at University of Arizona, S.K. Randall, V. Van Grootel","submitted_at":"2013-07-12T16:09:05Z","abstract_excerpt":"In the last few years, we have carried out several extensive observational campaigns on pulsating hot subdwarf stars using the Mont4K CCD camera attached to the 1.55 m Kuiper Telescope on Mount Bigelow. The Mont4K is a joint partnership between the University of Arizona and Universite de Montreal. It was designed and built at Steward Observatory. Using the Mont4K/Kuiper combination, we have so far, and among others, gathered high-sensitivity broadband light curves for PG 1219+534, PB8783, HS 0702+6043, and Feige 48. We report very briefly on some of the most interesting observational results t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3502","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":""},"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":"2026-05-18T03:18:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dWLFqJVblR8lWK0oe538TVvVe5Pw1Yma0AVNSPuOKJ7p6DHEI4FMfB9pUpntYH+zyGZEirX9mhJPZzRO4bQdDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T11:50:19.639510Z"},"content_sha256":"3781331f18a30fea26ed8f75246e106fa6cc1b42c3ab26407b8d49ebdac487fb","schema_version":"1.0","event_id":"sha256:3781331f18a30fea26ed8f75246e106fa6cc1b42c3ab26407b8d49ebdac487fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH/bundle.json","state_url":"https://pith.science/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH/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":"2026-05-26T11:50:19Z","links":{"resolver":"https://pith.science/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH","bundle":"https://pith.science/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH/bundle.json","state":"https://pith.science/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KX4EZJ2HIFIOX3ZHTS75DW45TH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:KX4EZJ2HIFIOX3ZHTS75DW45TH","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":"955b828a6db89dd7077a339b239b09dd10f9382a640123e032762024035f0939","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T16:09:05Z","title_canon_sha256":"1a7617d51cefc3bdcbfdea95f4b0306368059e664b8604bd5b481a719423f76c"},"schema_version":"1.0","source":{"id":"1307.3502","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.3502","created_at":"2026-05-18T03:18:39Z"},{"alias_kind":"arxiv_version","alias_value":"1307.3502v1","created_at":"2026-05-18T03:18:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.3502","created_at":"2026-05-18T03:18:39Z"},{"alias_kind":"pith_short_12","alias_value":"KX4EZJ2HIFIO","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"KX4EZJ2HIFIOX3ZH","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"KX4EZJ2H","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:3781331f18a30fea26ed8f75246e106fa6cc1b42c3ab26407b8d49ebdac487fb","target":"graph","created_at":"2026-05-18T03:18:39Z","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":"In the last few years, we have carried out several extensive observational campaigns on pulsating hot subdwarf stars using the Mont4K CCD camera attached to the 1.55 m Kuiper Telescope on Mount Bigelow. The Mont4K is a joint partnership between the University of Arizona and Universite de Montreal. It was designed and built at Steward Observatory. Using the Mont4K/Kuiper combination, we have so far, and among others, gathered high-sensitivity broadband light curves for PG 1219+534, PB8783, HS 0702+6043, and Feige 48. We report very briefly on some of the most interesting observational results t","authors_text":"E.M. Green, G. Fontaine, M. Latour, P. Brassard, S. Charpinet, several undergraduate students at University of Arizona, S.K. Randall, V. Van Grootel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T16:09:05Z","title":"Observational Asteroseismology of Hot Subdwarf Stars with the Mont4K/Kuiper Combination at the Steward Observatory Mount Bigelow Station"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.3502","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:aaf3f8a43b0261aacf742bc09c67b6c92180e6938cda147767b7b4af5282e76d","target":"record","created_at":"2026-05-18T03:18:39Z","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":"955b828a6db89dd7077a339b239b09dd10f9382a640123e032762024035f0939","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-07-12T16:09:05Z","title_canon_sha256":"1a7617d51cefc3bdcbfdea95f4b0306368059e664b8604bd5b481a719423f76c"},"schema_version":"1.0","source":{"id":"1307.3502","kind":"arxiv","version":1}},"canonical_sha256":"55f84ca7474150ebef279cbfd1db9d99d07968e486b65eb9cfda162b1b59a0d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"55f84ca7474150ebef279cbfd1db9d99d07968e486b65eb9cfda162b1b59a0d7","first_computed_at":"2026-05-18T03:18:39.003026Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:39.003026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nEilh55pXiNrkREWUXHBpw10yhqcyzNEbdHk75NR7vdRqPyiYeonaWFvcLM40s+uGs2GOWhswaw1Qs2eN2PXDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:39.003499Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.3502","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aaf3f8a43b0261aacf742bc09c67b6c92180e6938cda147767b7b4af5282e76d","sha256:3781331f18a30fea26ed8f75246e106fa6cc1b42c3ab26407b8d49ebdac487fb"],"state_sha256":"a1282df1b2b7d9dd4ed425702a1bf31a94468e8c64d338b3182a87d9d7ebe949"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6nBn3mm31bLKketRp3vwss2DB9pK+ybYfiKXrSEXePW7tUMlp3p6G4u1rbUZoLnwOnQyFr16t8IVvyD+q8WbAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T11:50:19.642155Z","bundle_sha256":"1a70b4263f3d733891fe9b277a7c47e63e69f154613ee3c5b771821d11f3784a"}}