{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:DRT46PCDBU2QB3HKACMDMPTL2P","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":"b828b71d4badc2969851b199fc5fd0982e0c66c9edae980e69a7f16d80ae7b6a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-10-02T19:50:09Z","title_canon_sha256":"d7c6525c3d868d657b93fddb900f3f310c5f03716cccb548cfa8ff64183431c1"},"schema_version":"1.0","source":{"id":"astro-ph/0210046","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0210046","created_at":"2026-07-04T14:12:16Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0210046v1","created_at":"2026-07-04T14:12:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0210046","created_at":"2026-07-04T14:12:16Z"},{"alias_kind":"pith_short_12","alias_value":"DRT46PCDBU2Q","created_at":"2026-07-04T14:12:16Z"},{"alias_kind":"pith_short_16","alias_value":"DRT46PCDBU2QB3HK","created_at":"2026-07-04T14:12:16Z"},{"alias_kind":"pith_short_8","alias_value":"DRT46PCD","created_at":"2026-07-04T14:12:16Z"}],"graph_snapshots":[{"event_id":"sha256:8644b4655b3f4967cb33366bd4caaa65e2b848b71bac84ebb584b5e7b0b31db6","target":"graph","created_at":"2026-07-04T14:12:16Z","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/0210046/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"ESPI has been proposed for direct imaging and spectral analysis of giant planets orbiting solar-type stars. ESPI extends the concept suggested by Nisenson and Papaliolios (2001) for a square aperture apodized telescope that has sufficient dynamic range to directly detect exo-planets. With a 1.5 M square mirror, ESPI can deliver high dynamic range imagery as close as 0.3 arcseconds to bright sources, permitting a sensitive search for exoplanets around nearby stars and a study of their characteristics in reflected light.","authors_text":"C. Hardesty, C. Papaliolios, D.A. Neufeld, D.D. Sasselov, D. Fischer, D. Gezari, G.J. Melnick, J. Geary, M. Harwit, M. Holman, M.S. Marley, P. Nisenson, R.G. Lyon, R. Gonsalves, R.W. Noyes, S.G. Korzennik, S.T. Ridgway","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-10-02T19:50:09Z","title":"The Extra-Solar Planet Imager (ESPI)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0210046","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":"sha256:76c060aeae8e63a362fc20368a86b62b9c1006180dd04a3be0a8f21752775967","target":"record","created_at":"2026-07-04T14:12:16Z","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":"b828b71d4badc2969851b199fc5fd0982e0c66c9edae980e69a7f16d80ae7b6a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-10-02T19:50:09Z","title_canon_sha256":"d7c6525c3d868d657b93fddb900f3f310c5f03716cccb548cfa8ff64183431c1"},"schema_version":"1.0","source":{"id":"astro-ph/0210046","kind":"arxiv","version":1}},"canonical_sha256":"1c67cf3c430d3500ecea0098363e6bd3c93dc2398e0cb2c2f9018e2bc8ea6e37","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c67cf3c430d3500ecea0098363e6bd3c93dc2398e0cb2c2f9018e2bc8ea6e37","first_computed_at":"2026-07-04T14:12:16.521057Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:12:16.521057Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iVx6XwVBb+UZd1J0LXtNrLaiZ2vtFbLVv06VSvcJlknHorL2Cr/SyCHQQoL5HR6TrNVT3Ewb53IJMFdTzvovBw==","signature_status":"signed_v1","signed_at":"2026-07-04T14:12:16.521430Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0210046","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:76c060aeae8e63a362fc20368a86b62b9c1006180dd04a3be0a8f21752775967","sha256:8644b4655b3f4967cb33366bd4caaa65e2b848b71bac84ebb584b5e7b0b31db6"],"state_sha256":"cad9329669c3747beff96af038b2dcb18e482de30cc52a8c0e9a28406f819662"}