{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:T7CBOFLH47R3RGHRGT36TVCWF7","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":"6ad88969553583366fc13b4aa3f8959b7aec7a3a99959c079c259e28e7d91230","cross_cats_sorted":["astro-ph.GA","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T21:55:54Z","title_canon_sha256":"27364a77fbfae8dba1b217fbdc316fe4696c6bdd5cf464499df6eb2e0e3353c3"},"schema_version":"1.0","source":{"id":"1810.00098","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.00098","created_at":"2026-07-05T01:27:00Z"},{"alias_kind":"arxiv_version","alias_value":"1810.00098v2","created_at":"2026-07-05T01:27:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.00098","created_at":"2026-07-05T01:27:00Z"},{"alias_kind":"pith_short_12","alias_value":"T7CBOFLH47R3","created_at":"2026-07-05T01:27:00Z"},{"alias_kind":"pith_short_16","alias_value":"T7CBOFLH47R3RGHR","created_at":"2026-07-05T01:27:00Z"},{"alias_kind":"pith_short_8","alias_value":"T7CBOFLH","created_at":"2026-07-05T01:27:00Z"}],"graph_snapshots":[{"event_id":"sha256:555cbbdf27e832dc6697247de1ceaeac9d09c45fa3e261622bc8778b9ec00d48","target":"graph","created_at":"2026-07-05T01:27:00Z","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/1810.00098/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The production of elements by rapid neutron capture (r-process) in neutron-star mergers is expected theoretically and is supported by multimessenger observations of gravitational-wave event GW170817: this production route is in principle sufficient to account for most of the r-process elements in the Universe. Analysis of the kilonova that accompanied GW170817 identified delayed outflows from a remnant accretion disk formed around the newly born black hole as the dominant source of heavy r-process material from that event. Similar accretion disks are expected to form in collapsars (the superno","authors_text":"Brian D. Metzger, Daniel M. Siegel, Jennifer Barnes","cross_cats":["astro-ph.GA","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T21:55:54Z","title":"Collapsars as a major source of r-process elements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.00098","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":"sha256:58173172f9769fda41d4e23711acc9f4e1297fccd024ec66256baeb3898e8fc4","target":"record","created_at":"2026-07-05T01:27:00Z","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":"6ad88969553583366fc13b4aa3f8959b7aec7a3a99959c079c259e28e7d91230","cross_cats_sorted":["astro-ph.GA","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-09-28T21:55:54Z","title_canon_sha256":"27364a77fbfae8dba1b217fbdc316fe4696c6bdd5cf464499df6eb2e0e3353c3"},"schema_version":"1.0","source":{"id":"1810.00098","kind":"arxiv","version":2}},"canonical_sha256":"9fc4171567e7e3b898f134f7e9d4562fd8ed3319585d4cdb0661dbe58b7e7ccb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fc4171567e7e3b898f134f7e9d4562fd8ed3319585d4cdb0661dbe58b7e7ccb","first_computed_at":"2026-07-05T01:27:00.473130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:27:00.473130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8Znv6CvB632We4C3daOlmVBKjeF5mVuZ055ffteUDQ14YFx9Ic9pIyLNY+RCdulpf7jlcKj2lckOxfbdOjdiDg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:27:00.473515Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.00098","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58173172f9769fda41d4e23711acc9f4e1297fccd024ec66256baeb3898e8fc4","sha256:555cbbdf27e832dc6697247de1ceaeac9d09c45fa3e261622bc8778b9ec00d48"],"state_sha256":"667f3c86cd25eb13ebf0cc76029f6fb9f443c452df253eac195a3fbb9530f51f"}