{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:UIJ7QLFRDRLLLX2LJTKLA2BNHR","short_pith_number":"pith:UIJ7QLFR","canonical_record":{"source":{"id":"1401.3287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-14T19:09:58Z","cross_cats_sorted":[],"title_canon_sha256":"9f8c71ac6a795afa01ff7df852b73e0655462ccd77b1fe29c8ece8691b52070a","abstract_canon_sha256":"f04a232397cb71b0a8bf1ca8c477638bfd4f218cc30ca1cf8fa8d02f6f2c14db"},"schema_version":"1.0"},"canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","source":{"kind":"arxiv","id":"1401.3287","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.3287","created_at":"2026-05-18T01:45:25Z"},{"alias_kind":"arxiv_version","alias_value":"1401.3287v1","created_at":"2026-05-18T01:45:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.3287","created_at":"2026-05-18T01:45:25Z"},{"alias_kind":"pith_short_12","alias_value":"UIJ7QLFRDRLL","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UIJ7QLFRDRLLLX2L","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UIJ7QLFR","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:UIJ7QLFRDRLLLX2LJTKLA2BNHR","target":"record","payload":{"canonical_record":{"source":{"id":"1401.3287","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-14T19:09:58Z","cross_cats_sorted":[],"title_canon_sha256":"9f8c71ac6a795afa01ff7df852b73e0655462ccd77b1fe29c8ece8691b52070a","abstract_canon_sha256":"f04a232397cb71b0a8bf1ca8c477638bfd4f218cc30ca1cf8fa8d02f6f2c14db"},"schema_version":"1.0"},"canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:25.613066Z","signature_b64":"l9XPYDmL4+9HddgPpNMlVtNYaA31FoDocNecnggw/9oOANIARRYxLNHIWmpoaMv0mF79hGJVrrReCWwcOmmWCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","last_reissued_at":"2026-05-18T01:45:25.612570Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:25.612570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.3287","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":"2026-05-18T01:45:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4jEwotBlj92bU4WY0awy7LaiwVTuzmYkI91QJYNXRrkRWsCq511vPJF1oXhOBsXzow7+3/EJXgKeFQWpbazaAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:58:30.362477Z"},"content_sha256":"d4b9df0712a6075e93899210a9ae94b97aed961d18ae45e5fc0be7981af22126","schema_version":"1.0","event_id":"sha256:d4b9df0712a6075e93899210a9ae94b97aed961d18ae45e5fc0be7981af22126"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:UIJ7QLFRDRLLLX2LJTKLA2BNHR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Star Formation Relations in Nearby Molecular Clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Amanda Heiderman, Nalin Vutisalchavakul, Neal J. Evans II","submitted_at":"2014-01-14T19:09:58Z","abstract_excerpt":"We test some ideas for star formation relations against data on local molecular clouds. On a cloud by cloud basis, the relation between the surface density of star formation rate and surface density of gas divided by a free-fall time, calculated from the mean cloud density, shows no significant correlation. If a crossing time is substituted for the free-fall time, there is even less correlation. Within a cloud, the star formation rate volume and surface densities increase rapidly with the corresponding gas densities, faster than predicted by models using the free-fall time defined from the loc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.3287","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":"2026-05-18T01:45:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WYKdU/KFPcE8II8wjcwNB/NDHbsbxUuK+hRZ9G8QbIzGrsEgIAUSf7rXhkWo1QUV/T4Q/m6AdKeuM+XbC5wkDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:58:30.363176Z"},"content_sha256":"4f7b14856c3b548d60d0e20a8d6c066bdf1e6fb3dff0ecea19e036f280a2db80","schema_version":"1.0","event_id":"sha256:4f7b14856c3b548d60d0e20a8d6c066bdf1e6fb3dff0ecea19e036f280a2db80"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/bundle.json","state_url":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/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":"2026-05-25T07:58:30Z","links":{"resolver":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR","bundle":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/bundle.json","state":"https://pith.science/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UIJ7QLFRDRLLLX2LJTKLA2BNHR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:UIJ7QLFRDRLLLX2LJTKLA2BNHR","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":"f04a232397cb71b0a8bf1ca8c477638bfd4f218cc30ca1cf8fa8d02f6f2c14db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-14T19:09:58Z","title_canon_sha256":"9f8c71ac6a795afa01ff7df852b73e0655462ccd77b1fe29c8ece8691b52070a"},"schema_version":"1.0","source":{"id":"1401.3287","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.3287","created_at":"2026-05-18T01:45:25Z"},{"alias_kind":"arxiv_version","alias_value":"1401.3287v1","created_at":"2026-05-18T01:45:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.3287","created_at":"2026-05-18T01:45:25Z"},{"alias_kind":"pith_short_12","alias_value":"UIJ7QLFRDRLL","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UIJ7QLFRDRLLLX2L","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UIJ7QLFR","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:4f7b14856c3b548d60d0e20a8d6c066bdf1e6fb3dff0ecea19e036f280a2db80","target":"graph","created_at":"2026-05-18T01:45:25Z","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 test some ideas for star formation relations against data on local molecular clouds. On a cloud by cloud basis, the relation between the surface density of star formation rate and surface density of gas divided by a free-fall time, calculated from the mean cloud density, shows no significant correlation. If a crossing time is substituted for the free-fall time, there is even less correlation. Within a cloud, the star formation rate volume and surface densities increase rapidly with the corresponding gas densities, faster than predicted by models using the free-fall time defined from the loc","authors_text":"Amanda Heiderman, Nalin Vutisalchavakul, Neal J. Evans II","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-14T19:09:58Z","title":"Star Formation Relations in Nearby Molecular Clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.3287","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:d4b9df0712a6075e93899210a9ae94b97aed961d18ae45e5fc0be7981af22126","target":"record","created_at":"2026-05-18T01:45:25Z","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":"f04a232397cb71b0a8bf1ca8c477638bfd4f218cc30ca1cf8fa8d02f6f2c14db","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-14T19:09:58Z","title_canon_sha256":"9f8c71ac6a795afa01ff7df852b73e0655462ccd77b1fe29c8ece8691b52070a"},"schema_version":"1.0","source":{"id":"1401.3287","kind":"arxiv","version":1}},"canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a213f82cb11c56b5df4b4cd4b0682d3c4cebda235ced1751f1263ea9f24bca55","first_computed_at":"2026-05-18T01:45:25.612570Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:25.612570Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l9XPYDmL4+9HddgPpNMlVtNYaA31FoDocNecnggw/9oOANIARRYxLNHIWmpoaMv0mF79hGJVrrReCWwcOmmWCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:25.613066Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.3287","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4b9df0712a6075e93899210a9ae94b97aed961d18ae45e5fc0be7981af22126","sha256:4f7b14856c3b548d60d0e20a8d6c066bdf1e6fb3dff0ecea19e036f280a2db80"],"state_sha256":"3adc84556be4af26a6347e686e3e6f8752a42de407d51b6ff3807537d0a831f1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufI6jTVviBJ1d1i17hXXfRly8sWfF0e4OQyZ2CC+qYIFIg77R6/tG612jKQ1RgFVn8/edJC9+pbN5GtUebz9Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T07:58:30.366950Z","bundle_sha256":"f05ce4e280143c1f549c3b915d078ba522bd38b0d83a01e07edead027a3402e1"}}