{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:6J6TRJIWLJMWF47TDBO3I54XFA","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":"3f65d447def8c02175f13617da22d8046485c5ed0a14e09405e6a580455fb7ca","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-24T22:05:09Z","title_canon_sha256":"51474d8c3ca5f42090f410d91e998efd86738575af2b5375fc88c0f3782e6d42"},"schema_version":"1.0","source":{"id":"2606.26409","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26409","created_at":"2026-06-26T00:15:40Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26409v1","created_at":"2026-06-26T00:15:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26409","created_at":"2026-06-26T00:15:40Z"},{"alias_kind":"pith_short_12","alias_value":"6J6TRJIWLJMW","created_at":"2026-06-26T00:15:40Z"},{"alias_kind":"pith_short_16","alias_value":"6J6TRJIWLJMWF47T","created_at":"2026-06-26T00:15:40Z"},{"alias_kind":"pith_short_8","alias_value":"6J6TRJIW","created_at":"2026-06-26T00:15:40Z"}],"graph_snapshots":[{"event_id":"sha256:742747f6ca57e5d40a28183702f07a81f3dc0649c5729d2aa76b2360c83767b6","target":"graph","created_at":"2026-06-26T00:15:40Z","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/2606.26409/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Skipper charge-coupled devices (CCDs) are an offshoot of standard silicon pixel detectors and are capable of performing repeated non-destructive charge measurements, enabling deeply sub-electron readout noise. This capability has opened the door to single-photon counting from the near-infrared ($\\sim$1.1\\,$\\mu$m) to the soft X-ray (several keV), making these devices strong candidates for future astronomical instruments operating in the photon-starved limit. Furthermore, the p-channel architecture used to fabricate Skipper CCDs on n-type silicon has been demonstrated to have an increased hardne","authors_text":"Agustin Lapi, Alex Drlica-Wagner, Ana Martina Botti, Blas Irigoyen Gimenez, Brandon M. Roach, Brenda Cervantes Vergara, Claudio Chavez, Guillermo Fernandez Moroni, Javier Tiffenberg, Juan Estrada, Julian Cuevas-Zepeda, Nathan Saffold, Nora Hoch, Phoenix Alpine, Santiago Perez, Stephen E. Holland, Yikai Wu","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-24T22:05:09Z","title":"In situ cryogenic characterization of proton damage in thick p-channel skipper CCDs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26409","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":"sha256:5c22b2b8ba6a331d5fa17adee1c125c7e75b9998175ae60dcf108e83c1854e57","target":"record","created_at":"2026-06-26T00:15:40Z","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":"3f65d447def8c02175f13617da22d8046485c5ed0a14e09405e6a580455fb7ca","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-24T22:05:09Z","title_canon_sha256":"51474d8c3ca5f42090f410d91e998efd86738575af2b5375fc88c0f3782e6d42"},"schema_version":"1.0","source":{"id":"2606.26409","kind":"arxiv","version":1}},"canonical_sha256":"f27d38a5165a5962f3f3185db477972836b7acba3ebd56818c978829784ba90d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f27d38a5165a5962f3f3185db477972836b7acba3ebd56818c978829784ba90d","first_computed_at":"2026-06-26T00:15:40.186799Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-26T00:15:40.186799Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ke44E//y1XM//W75sJgbgQmrh9UCYpqRphftwEW08bnXyndAxxyciPq/w66XmmteUTabFrahQPLjQvUuIkXQCg==","signature_status":"signed_v1","signed_at":"2026-06-26T00:15:40.187188Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.26409","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5c22b2b8ba6a331d5fa17adee1c125c7e75b9998175ae60dcf108e83c1854e57","sha256:742747f6ca57e5d40a28183702f07a81f3dc0649c5729d2aa76b2360c83767b6"],"state_sha256":"66aa671b7ee380740ed22d6e08ccdfb53befaf04a529ebdfda5332830623285e"}