{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:GGJUOTKVIEDU5JSZKSJGALISJG","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":"515d91139991634b480da13a38c8f95c8973fa463523add70163dc75f67d8e23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-24T19:20:01Z","title_canon_sha256":"27ef101f6190200347106710d91d6c9d0dcc56c1ab6f7eacd79abdffcc499a55"},"schema_version":"1.0","source":{"id":"2108.10924","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.10924","created_at":"2026-07-05T03:08:47Z"},{"alias_kind":"arxiv_version","alias_value":"2108.10924v1","created_at":"2026-07-05T03:08:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.10924","created_at":"2026-07-05T03:08:47Z"},{"alias_kind":"pith_short_12","alias_value":"GGJUOTKVIEDU","created_at":"2026-07-05T03:08:47Z"},{"alias_kind":"pith_short_16","alias_value":"GGJUOTKVIEDU5JSZ","created_at":"2026-07-05T03:08:47Z"},{"alias_kind":"pith_short_8","alias_value":"GGJUOTKV","created_at":"2026-07-05T03:08:47Z"}],"graph_snapshots":[{"event_id":"sha256:1f82bae5eadc9d6103b839957adf7bf0161ea79056e263b124161b0f57c91ea6","target":"graph","created_at":"2026-07-05T03:08:47Z","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/2108.10924/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Nancy Grace Roman Space Telescope Coronagraph Instrument will be the first large scale coronagraphmission with active wavefront control to be operated in space and will demonstrate technologies essential tofuture missions to image Earth-like planets. Consisting of multiple coronagraph modes, the coronagraph isexpected to characterize and image exoplanets at 1E-8 or better contrast levels. An object-oriented physicaloptics modeling tool called POPPY provides flexible and efficient simulations of high-contrast point spreadfunctions (PSFs). As such, three coronagraph modes have been modeled i","authors_text":"Ewan S. Douglas, Jaren Ashcraft, Kian Milani","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-24T19:20:01Z","title":"Updated simulation tools for Roman coronagraph PSFs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.10924","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":"sha256:1ef6eb3a12ad6428120ab71628d01ad70dce255454922a76d2f1a801a807e4ed","target":"record","created_at":"2026-07-05T03:08:47Z","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":"515d91139991634b480da13a38c8f95c8973fa463523add70163dc75f67d8e23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2021-08-24T19:20:01Z","title_canon_sha256":"27ef101f6190200347106710d91d6c9d0dcc56c1ab6f7eacd79abdffcc499a55"},"schema_version":"1.0","source":{"id":"2108.10924","kind":"arxiv","version":1}},"canonical_sha256":"3193474d5541074ea6595492602d1249b55fa80e15d197f7de4856a62ca82a88","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3193474d5541074ea6595492602d1249b55fa80e15d197f7de4856a62ca82a88","first_computed_at":"2026-07-05T03:08:47.553311Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:08:47.553311Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xuY6kG/wa++nOEPHimDCS5BaB91gLjRQjcI7pjgW/Ik/GCa2mS5Zyes4VK79r0d+2Ky5jrsuZi8IitUjZJnWBw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:08:47.553671Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.10924","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ef6eb3a12ad6428120ab71628d01ad70dce255454922a76d2f1a801a807e4ed","sha256:1f82bae5eadc9d6103b839957adf7bf0161ea79056e263b124161b0f57c91ea6"],"state_sha256":"27efecdcffb2cc0564b66980d4122c29d7792a4957abc905bf9524ce8bfc4a86"}