{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:3ESLYJQFCXAHDUI6BC4LW3ARQ2","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":"410eefa1585e51c8f5e4fcf2d08f30f05d1ff717f0c076ebc093b5ca6f89639e","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-06-20T19:56:39Z","title_canon_sha256":"63002968b35e9a58a735cc962373dea8b8b7a18f4b02625a1bc8fd6afbddfebb"},"schema_version":"1.0","source":{"id":"2406.14704","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.14704","created_at":"2026-07-05T08:35:07Z"},{"alias_kind":"arxiv_version","alias_value":"2406.14704v1","created_at":"2026-07-05T08:35:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.14704","created_at":"2026-07-05T08:35:07Z"},{"alias_kind":"pith_short_12","alias_value":"3ESLYJQFCXAH","created_at":"2026-07-05T08:35:07Z"},{"alias_kind":"pith_short_16","alias_value":"3ESLYJQFCXAHDUI6","created_at":"2026-07-05T08:35:07Z"},{"alias_kind":"pith_short_8","alias_value":"3ESLYJQF","created_at":"2026-07-05T08:35:07Z"}],"graph_snapshots":[{"event_id":"sha256:34e6d999b4fdc62ccba82e4c1ca5a145b263ab8b985d3014c1371d2b668d5607","target":"graph","created_at":"2026-07-05T08:35:07Z","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/2406.14704/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results from the occultation of Betelgeuse by asteroid (319) Leona on December 12, 2023, observed using a 64x64 pixel Single-Photon Avalanche Diode (SPAD) array mounted on a 10-inch telescope at the AstroCamp Observatory in Nerpio, Southeast of Spain, just a few kilometers from the center of the occultation shadow path. This study highlights remarkable advancements in applying SPAD technology in astronomy. The SPAD array's asynchronous readout capacity and photon-counting timestamp mode enabled a temporal resolution of 1 microsecond in our light curve observations of Betelgeuse. Our","authors_text":"\\'A. Rodr\\'iguez-V\\'azquez, E. P\\'erez, F. Prada, G. Glez-de-Rivera, J. A. Le\\~nero-Bardallo, J. de Elias Cantalapiedra, J. E. Betancort-Rijo, R. Gomez-Merchan, S. D\\'iaz-L\\'opez","cross_cats":["astro-ph.EP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-06-20T19:56:39Z","title":"Single-photon gig in Betelgeuse's occultation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.14704","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":"sha256:7095df92deee1fb2b5469e84aa4c17eeb5c8ab33ce1cf7e90d51633abf9caeb2","target":"record","created_at":"2026-07-05T08:35:07Z","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":"410eefa1585e51c8f5e4fcf2d08f30f05d1ff717f0c076ebc093b5ca6f89639e","cross_cats_sorted":["astro-ph.EP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2024-06-20T19:56:39Z","title_canon_sha256":"63002968b35e9a58a735cc962373dea8b8b7a18f4b02625a1bc8fd6afbddfebb"},"schema_version":"1.0","source":{"id":"2406.14704","kind":"arxiv","version":1}},"canonical_sha256":"d924bc260515c071d11e08b8bb6c11868327ea8ef33f6417ef686c0030ca1362","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d924bc260515c071d11e08b8bb6c11868327ea8ef33f6417ef686c0030ca1362","first_computed_at":"2026-07-05T08:35:07.131593Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:35:07.131593Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xYBuicHx2+YeSUX+mk024/3w9XcB/fKpfaIMDUeXPhRKQmBv9eGFub2JiqrPiOHtWgbodjzpHU8+NZPeV4HJCg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:35:07.132073Z","signed_message":"canonical_sha256_bytes"},"source_id":"2406.14704","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7095df92deee1fb2b5469e84aa4c17eeb5c8ab33ce1cf7e90d51633abf9caeb2","sha256:34e6d999b4fdc62ccba82e4c1ca5a145b263ab8b985d3014c1371d2b668d5607"],"state_sha256":"c7caea6d2c62f1e7ac7daae53691962b99dc97a40d24489ec129145f1e2b2eba"}