{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:BGLWB3RSAOOUJIZERLRMS5GAYL","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":"38d89332c66e3a404aa5c074a3c6fdf0891b507d090b30e6927796d8d2696c93","cross_cats_sorted":["astro-ph.CO","astro-ph.IM","astro-ph.SR","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-30T14:45:45Z","title_canon_sha256":"ff248fa6ac973a5bf76b84259f87610864c43db53e62a57b54e4e50e22800bc1"},"schema_version":"1.0","source":{"id":"2606.31757","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.31757","created_at":"2026-07-01T01:18:13Z"},{"alias_kind":"arxiv_version","alias_value":"2606.31757v1","created_at":"2026-07-01T01:18:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.31757","created_at":"2026-07-01T01:18:13Z"},{"alias_kind":"pith_short_12","alias_value":"BGLWB3RSAOOU","created_at":"2026-07-01T01:18:13Z"},{"alias_kind":"pith_short_16","alias_value":"BGLWB3RSAOOUJIZE","created_at":"2026-07-01T01:18:13Z"},{"alias_kind":"pith_short_8","alias_value":"BGLWB3RS","created_at":"2026-07-01T01:18:13Z"}],"graph_snapshots":[{"event_id":"sha256:1f1b71c3676f01ae168b8c1cff00c1c1c927c79471db8ce6437d460f2ea5483f","target":"graph","created_at":"2026-07-01T01:18:13Z","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/2606.31757/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gravitational wave observations are beginning to probe the upper edge of the pair-instability supernova (PISN) black hole mass gap, a key prediction of stellar evolution. In this work, we quantify the sensitivity of this boundary to uncertainties in stellar evolution using a suite of simulations that vary inputs including nuclear reaction rates, mixing processes, and stellar winds. We find that the $^{12}{\\rm C}(\\alpha,\\gamma)^{16}{\\rm O}$ reaction rate is the dominant source of uncertainty, shifting the upper edge by $\\Delta M\\sim30\\,{\\rm M}_\\odot$, with the triple-$\\alpha$ rate producing a c","authors_text":"Djuna Croon, Jeremy Sakstein","cross_cats":["astro-ph.CO","astro-ph.IM","astro-ph.SR","gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-30T14:45:45Z","title":"The location of the upper edge of the pair-instability supernovae black hole mass gap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.31757","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":"sha256:8fc50106156af1af0e8167b1d558b1b57551b94fcc99b8cc14b398d3b2e2d94e","target":"record","created_at":"2026-07-01T01:18:13Z","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":"38d89332c66e3a404aa5c074a3c6fdf0891b507d090b30e6927796d8d2696c93","cross_cats_sorted":["astro-ph.CO","astro-ph.IM","astro-ph.SR","gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-30T14:45:45Z","title_canon_sha256":"ff248fa6ac973a5bf76b84259f87610864c43db53e62a57b54e4e50e22800bc1"},"schema_version":"1.0","source":{"id":"2606.31757","kind":"arxiv","version":1}},"canonical_sha256":"099760ee32039d44a3248ae2c974c0c2ff6d54f5a6ee9ce38008e17ed467a388","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"099760ee32039d44a3248ae2c974c0c2ff6d54f5a6ee9ce38008e17ed467a388","first_computed_at":"2026-07-01T01:18:13.881642Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-01T01:18:13.881642Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sLNrlL5RU/Dh6szJ+GhLjM5Q4oFsyWyYZcJMkc4GsnhFjYgu8ov/Wn48oBLbIJ7ycY3tSrIV0f7zNFB4U1qxAA==","signature_status":"signed_v1","signed_at":"2026-07-01T01:18:13.882092Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.31757","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8fc50106156af1af0e8167b1d558b1b57551b94fcc99b8cc14b398d3b2e2d94e","sha256:1f1b71c3676f01ae168b8c1cff00c1c1c927c79471db8ce6437d460f2ea5483f"],"state_sha256":"de98c184a943b74d2114dfacbad6336805d3477d76e35b6bdfa11ded70458d58"}