{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MQMS637KYTEKJI2MO5PFNANGK4","short_pith_number":"pith:MQMS637K","canonical_record":{"source":{"id":"1902.01433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-02-04T19:17:13Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"8a81beae59d42830632dbcc9dbeb6f1aa1ace908521b6ab4ed53f1c616dbd8d7","abstract_canon_sha256":"31115e49abc73dd7c89993cf12134fbec96d423ffb8a8be22265d0cffa497cc9"},"schema_version":"1.0"},"canonical_sha256":"64192f6feac4c8a4a34c775e5681a6571801f74313729f4d63f7ee040bfeef8d","source":{"kind":"arxiv","id":"1902.01433","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01433","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01433v1","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01433","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"pith_short_12","alias_value":"MQMS637KYTEK","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"MQMS637KYTEKJI2M","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"MQMS637K","created_at":"2026-05-18T12:33:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MQMS637KYTEKJI2MO5PFNANGK4","target":"record","payload":{"canonical_record":{"source":{"id":"1902.01433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-02-04T19:17:13Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"8a81beae59d42830632dbcc9dbeb6f1aa1ace908521b6ab4ed53f1c616dbd8d7","abstract_canon_sha256":"31115e49abc73dd7c89993cf12134fbec96d423ffb8a8be22265d0cffa497cc9"},"schema_version":"1.0"},"canonical_sha256":"64192f6feac4c8a4a34c775e5681a6571801f74313729f4d63f7ee040bfeef8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:39.332535Z","signature_b64":"YUiZGx7MSzaH2e24J2zp9e94XIKwVkW0aARdZ15AX0UeSTCHx6Lx1dIRRzNkgISYkW8BCsi4zZGT3wIFgvYUAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"64192f6feac4c8a4a34c775e5681a6571801f74313729f4d63f7ee040bfeef8d","last_reissued_at":"2026-05-17T23:49:39.331858Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:39.331858Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.01433","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":"2026-05-17T23:49:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G1Tq8oOh+pjXL1a9MVLhksSMgML/KVGChPAZPbJ1t/4Bo7Z+O0IJUau31PWpkeuqNXhBj7e9mAvVEBQ7MbobBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T01:55:41.052667Z"},"content_sha256":"fba624a5b44ae094d186ee5eccf9e70dd0c19d1604d0f14381eec36c5221644f","schema_version":"1.0","event_id":"sha256:fba624a5b44ae094d186ee5eccf9e70dd0c19d1604d0f14381eec36c5221644f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MQMS637KYTEKJI2MO5PFNANGK4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Think Global, Act Local: The Influence of Environment Age and Host Mass on Type Ia Supernova Light Curves","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"B. M. Rose, M. A. Berg, P. M. Garnavich","submitted_at":"2019-02-04T19:17:13Z","abstract_excerpt":"The reliability of Type Ia supernovae (SNIa) may be limited by the imprint of their galactic origins. To investigate the connection between supernovae and their host characteristics, we developed an improved method to estimate the stellar population age of the host as well as the local environment around the site of the supernova. We use a Bayesian method to estimate the star formation history and mass weighted age of a supernova's environment by matching observed spectral energy distributions to a synthesized stellar population. Applying this age estimator to both the photometrically and spec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01433","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":"2026-05-17T23:49:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WXODsgjB7NrTZmWMRR71pnXUR52iigrbjodKxJ+XZvvQMcXEqZP5AXw0w9GbG3C4r4EtNNCvDqeEKsCXNhujDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T01:55:41.053229Z"},"content_sha256":"a1e95054be08294a47f5dc3dabf507dbf6ebf6c7718fe35802eaf40241034279","schema_version":"1.0","event_id":"sha256:a1e95054be08294a47f5dc3dabf507dbf6ebf6c7718fe35802eaf40241034279"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MQMS637KYTEKJI2MO5PFNANGK4/bundle.json","state_url":"https://pith.science/pith/MQMS637KYTEKJI2MO5PFNANGK4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MQMS637KYTEKJI2MO5PFNANGK4/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":"2026-06-11T01:55:41Z","links":{"resolver":"https://pith.science/pith/MQMS637KYTEKJI2MO5PFNANGK4","bundle":"https://pith.science/pith/MQMS637KYTEKJI2MO5PFNANGK4/bundle.json","state":"https://pith.science/pith/MQMS637KYTEKJI2MO5PFNANGK4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MQMS637KYTEKJI2MO5PFNANGK4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MQMS637KYTEKJI2MO5PFNANGK4","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":"31115e49abc73dd7c89993cf12134fbec96d423ffb8a8be22265d0cffa497cc9","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-02-04T19:17:13Z","title_canon_sha256":"8a81beae59d42830632dbcc9dbeb6f1aa1ace908521b6ab4ed53f1c616dbd8d7"},"schema_version":"1.0","source":{"id":"1902.01433","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01433","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01433v1","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01433","created_at":"2026-05-17T23:49:39Z"},{"alias_kind":"pith_short_12","alias_value":"MQMS637KYTEK","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"MQMS637KYTEKJI2M","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"MQMS637K","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:a1e95054be08294a47f5dc3dabf507dbf6ebf6c7718fe35802eaf40241034279","target":"graph","created_at":"2026-05-17T23:49:39Z","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":"The reliability of Type Ia supernovae (SNIa) may be limited by the imprint of their galactic origins. To investigate the connection between supernovae and their host characteristics, we developed an improved method to estimate the stellar population age of the host as well as the local environment around the site of the supernova. We use a Bayesian method to estimate the star formation history and mass weighted age of a supernova's environment by matching observed spectral energy distributions to a synthesized stellar population. Applying this age estimator to both the photometrically and spec","authors_text":"B. M. Rose, M. A. Berg, P. M. Garnavich","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-02-04T19:17:13Z","title":"Think Global, Act Local: The Influence of Environment Age and Host Mass on Type Ia Supernova Light Curves"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01433","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:fba624a5b44ae094d186ee5eccf9e70dd0c19d1604d0f14381eec36c5221644f","target":"record","created_at":"2026-05-17T23:49:39Z","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":"31115e49abc73dd7c89993cf12134fbec96d423ffb8a8be22265d0cffa497cc9","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-02-04T19:17:13Z","title_canon_sha256":"8a81beae59d42830632dbcc9dbeb6f1aa1ace908521b6ab4ed53f1c616dbd8d7"},"schema_version":"1.0","source":{"id":"1902.01433","kind":"arxiv","version":1}},"canonical_sha256":"64192f6feac4c8a4a34c775e5681a6571801f74313729f4d63f7ee040bfeef8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"64192f6feac4c8a4a34c775e5681a6571801f74313729f4d63f7ee040bfeef8d","first_computed_at":"2026-05-17T23:49:39.331858Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:39.331858Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YUiZGx7MSzaH2e24J2zp9e94XIKwVkW0aARdZ15AX0UeSTCHx6Lx1dIRRzNkgISYkW8BCsi4zZGT3wIFgvYUAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:39.332535Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.01433","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fba624a5b44ae094d186ee5eccf9e70dd0c19d1604d0f14381eec36c5221644f","sha256:a1e95054be08294a47f5dc3dabf507dbf6ebf6c7718fe35802eaf40241034279"],"state_sha256":"6fbd68321364412c62cc0c8c0f4158771fee6fb46f1565472ea5a7ebef3b2e0b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lhi/i5jN54MWItZFlXB+D7YPnUJvqUot190E7Ri1eTMlY12OtEX4Nbln5xLOx/zvoLxtSVaVE09hy+C0z5dyAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T01:55:41.056202Z","bundle_sha256":"ddf65273585b92fca77d7a4d4ba92ef8e746cb77fc1831a555a9fb2fecc2113a"}}