{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:SQU7NURMQQZHEGMTCTNTTN5QWM","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":"f4d66f6ecc189137dc2efcbd47118f36f6152ae5f52f6a94545d96cd2295257b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-07-24T17:47:00Z","title_canon_sha256":"9dc99dbba113868c27d3eaff8ee23b4a7893683792097b9cccdca9bc277d0e4d"},"schema_version":"1.0","source":{"id":"2507.18610","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.18610","created_at":"2026-07-05T12:02:48Z"},{"alias_kind":"arxiv_version","alias_value":"2507.18610v2","created_at":"2026-07-05T12:02:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.18610","created_at":"2026-07-05T12:02:48Z"},{"alias_kind":"pith_short_12","alias_value":"SQU7NURMQQZH","created_at":"2026-07-05T12:02:48Z"},{"alias_kind":"pith_short_16","alias_value":"SQU7NURMQQZHEGMT","created_at":"2026-07-05T12:02:48Z"},{"alias_kind":"pith_short_8","alias_value":"SQU7NURM","created_at":"2026-07-05T12:02:48Z"}],"graph_snapshots":[{"event_id":"sha256:224c840a98ecf8740cef324587f31ef5d1e2c3f57a97c277589dece7bd53bb31","target":"graph","created_at":"2026-07-05T12:02:48Z","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/2507.18610/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Direct ptychography enables the retrieval of information encoded in the phase of an electron wave passing through a thin sample by deconvolving the interference effects of a converged probe with known aberrations. Under the weak phase object approximation, this permits the optimal transfer of information using non-iterative techniques. However, the achievable resolution of the technique is traditionally limited by the probe step size -- setting stringent Nyquist sampling requirements. At the same time, parallax imaging has emerged as a dose-efficient phase-retrieval technique which relaxes sam","authors_text":"Colin Ophus, Georgios Varnavides, Julie Marie Bekkevold, Lewys Jones, Mary C Scott, Stephanie M Ribet","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-07-24T17:47:00Z","title":"Relaxing Direct Ptychography Sampling Requirements via Parallax Imaging Insights"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.18610","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":"sha256:958211d0bc0d3b6c0dde33d0cb6977f97bf7f5072b65b300a4ad731e7c59ca79","target":"record","created_at":"2026-07-05T12:02:48Z","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":"f4d66f6ecc189137dc2efcbd47118f36f6152ae5f52f6a94545d96cd2295257b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2025-07-24T17:47:00Z","title_canon_sha256":"9dc99dbba113868c27d3eaff8ee23b4a7893683792097b9cccdca9bc277d0e4d"},"schema_version":"1.0","source":{"id":"2507.18610","kind":"arxiv","version":2}},"canonical_sha256":"9429f6d22c843272199314db39b7b0b30aa0f6163f68bdcafe8a424529bcca7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9429f6d22c843272199314db39b7b0b30aa0f6163f68bdcafe8a424529bcca7f","first_computed_at":"2026-07-05T12:02:48.841932Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:02:48.841932Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PLCD0iXuEIweZnVJlwhLyJyCT2ak0KfjjZG9PKL5Zmsp/i9x2JriQFBowXCoFIXn15v7yIMCHt+GSc7vFOF3AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T12:02:48.842442Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.18610","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:958211d0bc0d3b6c0dde33d0cb6977f97bf7f5072b65b300a4ad731e7c59ca79","sha256:224c840a98ecf8740cef324587f31ef5d1e2c3f57a97c277589dece7bd53bb31"],"state_sha256":"e637216758d2181dc94cd88baa57ee26bde536c5931acbc22c0dbd34402d6d8a"}