{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:NVNPAH5NN6SAFNC36M5RECAZ3H","short_pith_number":"pith:NVNPAH5N","canonical_record":{"source":{"id":"2404.08059","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-11T18:03:03Z","cross_cats_sorted":[],"title_canon_sha256":"2ad8819bc9eef80fb4e9e7b58b4f3158b6f9b17c727e202e7fe2329c85f1ca18","abstract_canon_sha256":"9f7f3c6562ba3f211f7cf0612d235ba0cbac00616562d4ead11c516dc94946ce"},"schema_version":"1.0"},"canonical_sha256":"6d5af01fad6fa402b45bf33b120819d9e118705892dfcc009bcc30c7546991bb","source":{"kind":"arxiv","id":"2404.08059","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.08059","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"arxiv_version","alias_value":"2404.08059v2","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.08059","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"pith_short_12","alias_value":"NVNPAH5NN6SA","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"pith_short_16","alias_value":"NVNPAH5NN6SAFNC3","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"pith_short_8","alias_value":"NVNPAH5N","created_at":"2026-07-05T09:08:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:NVNPAH5NN6SAFNC36M5RECAZ3H","target":"record","payload":{"canonical_record":{"source":{"id":"2404.08059","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-11T18:03:03Z","cross_cats_sorted":[],"title_canon_sha256":"2ad8819bc9eef80fb4e9e7b58b4f3158b6f9b17c727e202e7fe2329c85f1ca18","abstract_canon_sha256":"9f7f3c6562ba3f211f7cf0612d235ba0cbac00616562d4ead11c516dc94946ce"},"schema_version":"1.0"},"canonical_sha256":"6d5af01fad6fa402b45bf33b120819d9e118705892dfcc009bcc30c7546991bb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:08:24.697663Z","signature_b64":"FbUjPC2YwO2ZFhtR17v496KHUlfA+ylsz9dJage9VnAq2DAN899vudFGsZYOAozdKckZBTbxnUs7SS9y+poZBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d5af01fad6fa402b45bf33b120819d9e118705892dfcc009bcc30c7546991bb","last_reissued_at":"2026-07-05T09:08:24.697156Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:08:24.697156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.08059","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":"2026-07-05T09:08:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vujqNEB7CPdBNT4005SIhhS1FHfDzqtPdvkhQVfT8tD4OjYF9015u4TDRlqrrSxFnbJLJ1/LteUUSW9j7lDnAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T15:25:54.450562Z"},"content_sha256":"eb4794f6aa4a746c8c13f904aa533db7e194a1910abdff4740c7a96ecb1326a5","schema_version":"1.0","event_id":"sha256:eb4794f6aa4a746c8c13f904aa533db7e194a1910abdff4740c7a96ecb1326a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:NVNPAH5NN6SAFNC36M5RECAZ3H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Galactic Chemical Evolution Models Favor an Extended Type Ia Supernova Delay-Time Distribution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"James W. Johnson, Jennifer A. Johnson, Liam O. Dubay","submitted_at":"2024-04-11T18:03:03Z","abstract_excerpt":"Type Ia supernovae (SNe Ia) produce most of the Fe-peak elements in the Universe and therefore are a crucial ingredient in galactic chemical evolution models. SNe Ia do not explode immediately after star formation, and the delay-time distribution (DTD) has not been definitively determined by supernova surveys or theoretical models. Because the DTD also affects the relationship among age, [Fe/H], and [$\\alpha$/Fe] in chemical evolution models, comparison with observations of stars in the Milky Way is an important consistency check for any proposed DTD. We implement several popular forms of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.08059","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.08059/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":"2026-07-05T09:08:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AyugKOcQOOGffQx9PqKGoKTwhAaJdPN5daKL0rdqT+LEVB3n0jOtGfyqT/NPCpZpHEEvYu+ISLFMKWJckMkYCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T15:25:54.451304Z"},"content_sha256":"84da7eb2fb9112e3bc881d56b8dd382d047cbdedbec6de3e4f95af19b2850fa9","schema_version":"1.0","event_id":"sha256:84da7eb2fb9112e3bc881d56b8dd382d047cbdedbec6de3e4f95af19b2850fa9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NVNPAH5NN6SAFNC36M5RECAZ3H/bundle.json","state_url":"https://pith.science/pith/NVNPAH5NN6SAFNC36M5RECAZ3H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NVNPAH5NN6SAFNC36M5RECAZ3H/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":"2026-08-11T15:25:54Z","links":{"resolver":"https://pith.science/pith/NVNPAH5NN6SAFNC36M5RECAZ3H","bundle":"https://pith.science/pith/NVNPAH5NN6SAFNC36M5RECAZ3H/bundle.json","state":"https://pith.science/pith/NVNPAH5NN6SAFNC36M5RECAZ3H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NVNPAH5NN6SAFNC36M5RECAZ3H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:NVNPAH5NN6SAFNC36M5RECAZ3H","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":"9f7f3c6562ba3f211f7cf0612d235ba0cbac00616562d4ead11c516dc94946ce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-11T18:03:03Z","title_canon_sha256":"2ad8819bc9eef80fb4e9e7b58b4f3158b6f9b17c727e202e7fe2329c85f1ca18"},"schema_version":"1.0","source":{"id":"2404.08059","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.08059","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"arxiv_version","alias_value":"2404.08059v2","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.08059","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"pith_short_12","alias_value":"NVNPAH5NN6SA","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"pith_short_16","alias_value":"NVNPAH5NN6SAFNC3","created_at":"2026-07-05T09:08:24Z"},{"alias_kind":"pith_short_8","alias_value":"NVNPAH5N","created_at":"2026-07-05T09:08:24Z"}],"graph_snapshots":[{"event_id":"sha256:84da7eb2fb9112e3bc881d56b8dd382d047cbdedbec6de3e4f95af19b2850fa9","target":"graph","created_at":"2026-07-05T09:08:24Z","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/2404.08059/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Type Ia supernovae (SNe Ia) produce most of the Fe-peak elements in the Universe and therefore are a crucial ingredient in galactic chemical evolution models. SNe Ia do not explode immediately after star formation, and the delay-time distribution (DTD) has not been definitively determined by supernova surveys or theoretical models. Because the DTD also affects the relationship among age, [Fe/H], and [$\\alpha$/Fe] in chemical evolution models, comparison with observations of stars in the Milky Way is an important consistency check for any proposed DTD. We implement several popular forms of the ","authors_text":"James W. Johnson, Jennifer A. Johnson, Liam O. Dubay","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-11T18:03:03Z","title":"Galactic Chemical Evolution Models Favor an Extended Type Ia Supernova Delay-Time Distribution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.08059","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:eb4794f6aa4a746c8c13f904aa533db7e194a1910abdff4740c7a96ecb1326a5","target":"record","created_at":"2026-07-05T09:08:24Z","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":"9f7f3c6562ba3f211f7cf0612d235ba0cbac00616562d4ead11c516dc94946ce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-11T18:03:03Z","title_canon_sha256":"2ad8819bc9eef80fb4e9e7b58b4f3158b6f9b17c727e202e7fe2329c85f1ca18"},"schema_version":"1.0","source":{"id":"2404.08059","kind":"arxiv","version":2}},"canonical_sha256":"6d5af01fad6fa402b45bf33b120819d9e118705892dfcc009bcc30c7546991bb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d5af01fad6fa402b45bf33b120819d9e118705892dfcc009bcc30c7546991bb","first_computed_at":"2026-07-05T09:08:24.697156Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:08:24.697156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FbUjPC2YwO2ZFhtR17v496KHUlfA+ylsz9dJage9VnAq2DAN899vudFGsZYOAozdKckZBTbxnUs7SS9y+poZBw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:08:24.697663Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.08059","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:eb4794f6aa4a746c8c13f904aa533db7e194a1910abdff4740c7a96ecb1326a5","sha256:84da7eb2fb9112e3bc881d56b8dd382d047cbdedbec6de3e4f95af19b2850fa9"],"state_sha256":"8d816c2d23b3d17eea5c1d17e44b1dc6d4f7510d0906d21ffe3ffe804030c8ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eRvaQ4tOpJ65mO8OCru4SIyfe1+uPVnmmZB0pnKFVc99SSHBttEfzeWbojyXfqXh/e6E2SVCYMqjzxKBDmTaDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T15:25:54.456983Z","bundle_sha256":"94c6ab277d847304c48a7ff655cb969de36993bf0415f43d2c0054a64e70b100"}}