{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:EJ5PJ4OFDBT6B37ATVV3F6XGEG","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":"49213316977de60e483d2c7c93e65e5df408031e31227bdfb23a37fef0f5f03a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-03-15T15:53:11Z","title_canon_sha256":"16b7f01f6606a2375720d3b5893d4f2716cf9dd9a3ba88c536027628f84ad87b"},"schema_version":"1.0","source":{"id":"astro-ph/0503319","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0503319","created_at":"2026-07-04T16:51:00Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0503319v1","created_at":"2026-07-04T16:51:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0503319","created_at":"2026-07-04T16:51:00Z"},{"alias_kind":"pith_short_12","alias_value":"EJ5PJ4OFDBT6","created_at":"2026-07-04T16:51:00Z"},{"alias_kind":"pith_short_16","alias_value":"EJ5PJ4OFDBT6B37A","created_at":"2026-07-04T16:51:00Z"},{"alias_kind":"pith_short_8","alias_value":"EJ5PJ4OF","created_at":"2026-07-04T16:51:00Z"}],"graph_snapshots":[{"event_id":"sha256:b09d0bbbe3a6bd75e8404434992d89bc53965ab0d1a149d817389166338d8a82","target":"graph","created_at":"2026-07-04T16:51:00Z","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/astro-ph/0503319/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Chandra X-ray Observatory is the X-ray component of NASA's Great Observatory Program which includes the recently launched Spitzer Infrared Telescope, the Hubble Space Telescope (HST) for observations in the visible, and the Compton Gamma-Ray Observatory (CGRO) which, after providing years of useful data has reentered the atmosphere. All these facilities provide, or provided, scientific data to the international astronomical community in response to peer-reviewed proposals for their use. The Chandra X-ray Observatory was the result of the efforts of many academic, commercial, and government","authors_text":"C.E. Grant, D. Dewey, H.L. Marshall, J.J. Drake, M. Bautz, M.C. Weisskopf, R.A. Cameron, S.S. Murray, T.L. Aldcroft","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-03-15T15:53:11Z","title":"An Overview of the Performance of the Chandra X-Ray Observatory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0503319","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":"sha256:2f968667c0d7d98360db60eda177c14bdc9e970e47b318dd8052270444fa76f6","target":"record","created_at":"2026-07-04T16:51:00Z","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":"49213316977de60e483d2c7c93e65e5df408031e31227bdfb23a37fef0f5f03a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-03-15T15:53:11Z","title_canon_sha256":"16b7f01f6606a2375720d3b5893d4f2716cf9dd9a3ba88c536027628f84ad87b"},"schema_version":"1.0","source":{"id":"astro-ph/0503319","kind":"arxiv","version":1}},"canonical_sha256":"227af4f1c51867e0efe09d6bb2fae6219bbcb8f4e9bca6cff4850919ac710295","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"227af4f1c51867e0efe09d6bb2fae6219bbcb8f4e9bca6cff4850919ac710295","first_computed_at":"2026-07-04T16:51:00.139409Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:51:00.139409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HPIbNbTdaDycuojgmDItvU/M7PeFZrXZ+hGoKBiIHEp055QXMnZpwZ9nSm55iXibQK0+yIPyKLTkIAgyUVO+DQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:51:00.139823Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0503319","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f968667c0d7d98360db60eda177c14bdc9e970e47b318dd8052270444fa76f6","sha256:b09d0bbbe3a6bd75e8404434992d89bc53965ab0d1a149d817389166338d8a82"],"state_sha256":"ebf23b146cf9ef70614a99ff16b76dd2ddc7ad1cc00a697960b29f2bf41314f0"}