{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:KTFFNU36YYPC2C3RVLPJHKECE4","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":"5752729b8826ed633b0386af874503c90b3b713c7e8c3ee766f51426ea4405eb","cross_cats_sorted":["physics.optics","physics.space-ph"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2025-07-08T05:28:22Z","title_canon_sha256":"b70a311a305112973a8905f6a33809a29dec990dfe5f0b577df1075edb194b01"},"schema_version":"1.0","source":{"id":"2507.05684","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.05684","created_at":"2026-07-05T11:33:34Z"},{"alias_kind":"arxiv_version","alias_value":"2507.05684v1","created_at":"2026-07-05T11:33:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.05684","created_at":"2026-07-05T11:33:34Z"},{"alias_kind":"pith_short_12","alias_value":"KTFFNU36YYPC","created_at":"2026-07-05T11:33:34Z"},{"alias_kind":"pith_short_16","alias_value":"KTFFNU36YYPC2C3R","created_at":"2026-07-05T11:33:34Z"},{"alias_kind":"pith_short_8","alias_value":"KTFFNU36","created_at":"2026-07-05T11:33:34Z"}],"graph_snapshots":[{"event_id":"sha256:d6ea1b0d4047d4b23735d782ff691ba98fa4361978e697cd2f401dfd3aa32548","target":"graph","created_at":"2026-07-05T11:33:34Z","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/2507.05684/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent advances in the size, weight, and power (SWaP) requirements for space-based sensing have dramatically increased the demand for high-bandwidth downlink. However, high data rate RF transceivers still pose significant SWaP and cost restrictions, especially for university-class CubeSat missions. Optical communication may provide a solution to this challenge, enabling data transmission with order-of-magnitude rate increases over RF while being both secure and SWaP-efficient. The Polarization-modUlated Laser Satellite Experiment (PULSE-A) is a University of Chicago mission to demonstrate opti","authors_text":"Catherine Todd, Graydon Schulze-Kalt, John Baird, Juan Ignacio Prieto Asbun, Lauren Ayala, Leah Vashevko, Logan Hanssler, Mason McCormack, Maya McDaniel, Michael Lembeck, Robert Pitu, Rohan Gupta, Seth Knights, Sofia Mansilla, Spencer Shelton, Tian Zhong, Vincent Redwine","cross_cats":["physics.optics","physics.space-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2025-07-08T05:28:22Z","title":"PULSE-A Mission Overview: Optical Communications for Undergraduate Students"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.05684","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":"sha256:61f2735c27d76429d15ffd6299a1c5e4570a4222bfc26919b2fa2dd4a7b5a222","target":"record","created_at":"2026-07-05T11:33:34Z","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":"5752729b8826ed633b0386af874503c90b3b713c7e8c3ee766f51426ea4405eb","cross_cats_sorted":["physics.optics","physics.space-ph"],"license":"http://creativecommons.org/licenses/by-sa/4.0/","primary_cat":"physics.ed-ph","submitted_at":"2025-07-08T05:28:22Z","title_canon_sha256":"b70a311a305112973a8905f6a33809a29dec990dfe5f0b577df1075edb194b01"},"schema_version":"1.0","source":{"id":"2507.05684","kind":"arxiv","version":1}},"canonical_sha256":"54ca56d37ec61e2d0b71aade93a8822703349fa04fde43d383fdc22ad5af302d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"54ca56d37ec61e2d0b71aade93a8822703349fa04fde43d383fdc22ad5af302d","first_computed_at":"2026-07-05T11:33:34.712755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:33:34.712755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XyEtIz5nzv6/pKPDdeAb1Pi84MJIp4/YwyHFzozf8k5TEf0ufGQI1kYhfVdhWbjiycEOuKaVswzit7np6SpLDg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:33:34.713297Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.05684","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:61f2735c27d76429d15ffd6299a1c5e4570a4222bfc26919b2fa2dd4a7b5a222","sha256:d6ea1b0d4047d4b23735d782ff691ba98fa4361978e697cd2f401dfd3aa32548"],"state_sha256":"7118b31b32e96d0cfa677e49ed8908581074aa8e16cd6a02ca50ea42da3c7883"}