{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JT6UA4ZJNEAL6TY3CCQIDL5COO","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":"bd9b01a09f2c333fb3023abd5d9985d965b837c0bd6baac1e4ed8f84ee67b0d0","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-03T05:18:36Z","title_canon_sha256":"1496ab34ab70a111a46e07a633686cc44dc8932f20551b4376b886e6607d11ef"},"schema_version":"1.0","source":{"id":"1904.01773","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.01773","created_at":"2026-05-17T23:49:29Z"},{"alias_kind":"arxiv_version","alias_value":"1904.01773v1","created_at":"2026-05-17T23:49:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.01773","created_at":"2026-05-17T23:49:29Z"},{"alias_kind":"pith_short_12","alias_value":"JT6UA4ZJNEAL","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"JT6UA4ZJNEAL6TY3","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"JT6UA4ZJ","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:adb204e1ec2535b39942cbfce6e5c13da0b0f94fffc1f41857089ea947948dc9","target":"graph","created_at":"2026-05-17T23:49:29Z","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":"One of the key phases of stellar evolution that remains poorly understood is stellar death. We lack a predictive model for how a star of a given mass explodes and what kind of remnant it leaves behind (i.e. the initial-final mass relation, IFMR). Progress has been limited due to the difficulty in finding and weighing black holes and neutron stars in large numbers. Technological advances that allow for sub-milliarcsecond astrometry in crowded fields have opened a new window for finding black holes and neutron stars: astrometric gravitational lensing. Finding and weighing a sample of compact obj","authors_text":"B. Scott Gaudi, Casey Lam, Fatima Abdurrahman, Jessica R. Lu, Michael Medford, Nathan Golovich, Rachael L. Beaton, Will Dawson","cross_cats":["astro-ph.GA","astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-03T05:18:36Z","title":"Astro2020: From Stars to Compact Objects: The Initial-Final Mass Relation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.01773","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:ee883d07eceb4cbcc74d200f504a4bd9da908c2883f0b878e653372e9d4a81f2","target":"record","created_at":"2026-05-17T23:49:29Z","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":"bd9b01a09f2c333fb3023abd5d9985d965b837c0bd6baac1e4ed8f84ee67b0d0","cross_cats_sorted":["astro-ph.GA","astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2019-04-03T05:18:36Z","title_canon_sha256":"1496ab34ab70a111a46e07a633686cc44dc8932f20551b4376b886e6607d11ef"},"schema_version":"1.0","source":{"id":"1904.01773","kind":"arxiv","version":1}},"canonical_sha256":"4cfd4073296900bf4f1b10a081afa27398b62d6b88f6303d17f9eb17a9d30261","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4cfd4073296900bf4f1b10a081afa27398b62d6b88f6303d17f9eb17a9d30261","first_computed_at":"2026-05-17T23:49:29.721675Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:29.721675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mj05XNaMyGWf8JQJLt3uKXrd2M0zeGtHYIsCWy4uN8Puw05juYNM/MQJOZfr6WI2WQ2UvX78Knr3nwuFr+LXAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:29.722350Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.01773","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee883d07eceb4cbcc74d200f504a4bd9da908c2883f0b878e653372e9d4a81f2","sha256:adb204e1ec2535b39942cbfce6e5c13da0b0f94fffc1f41857089ea947948dc9"],"state_sha256":"97139f369c43a03c9d096dc7cd21129e92ce4581aa32fed34aa32124c1147c87"}