{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:XVWMX6AZHIZVVG4XVJOOVW5Y7K","short_pith_number":"pith:XVWMX6AZ","canonical_record":{"source":{"id":"1304.0373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-01T15:05:09Z","cross_cats_sorted":[],"title_canon_sha256":"6c2bfe4853df4a23e05f57dc1f86039360701988f443f3ed3566d3ff48278eed","abstract_canon_sha256":"bd17f9ac6127f140f06fc0956cbcc4703aa98287a7176a5a4cf7062a124b2a69"},"schema_version":"1.0"},"canonical_sha256":"bd6ccbf8193a335a9b97aa5ceadbb8fabd20bd9cfc9c989a2825a0d3a9054f0b","source":{"kind":"arxiv","id":"1304.0373","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.0373","created_at":"2026-05-18T03:29:17Z"},{"alias_kind":"arxiv_version","alias_value":"1304.0373v1","created_at":"2026-05-18T03:29:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.0373","created_at":"2026-05-18T03:29:17Z"},{"alias_kind":"pith_short_12","alias_value":"XVWMX6AZHIZV","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XVWMX6AZHIZVVG4X","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XVWMX6AZ","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:XVWMX6AZHIZVVG4XVJOOVW5Y7K","target":"record","payload":{"canonical_record":{"source":{"id":"1304.0373","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-01T15:05:09Z","cross_cats_sorted":[],"title_canon_sha256":"6c2bfe4853df4a23e05f57dc1f86039360701988f443f3ed3566d3ff48278eed","abstract_canon_sha256":"bd17f9ac6127f140f06fc0956cbcc4703aa98287a7176a5a4cf7062a124b2a69"},"schema_version":"1.0"},"canonical_sha256":"bd6ccbf8193a335a9b97aa5ceadbb8fabd20bd9cfc9c989a2825a0d3a9054f0b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:29:17.129923Z","signature_b64":"tTRRqOduO9gcyU205qoQGI8pK8pxuPTom1/2qrfGR9PYmygFoQDsvZXL5umFGw+a9psGkI6GqTx8H3fheOr7DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd6ccbf8193a335a9b97aa5ceadbb8fabd20bd9cfc9c989a2825a0d3a9054f0b","last_reissued_at":"2026-05-18T03:29:17.129227Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:29:17.129227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.0373","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:29:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RfbvtObgeVTBENiF5Vp8UDuU13f67JOcxDroFe9kSWvU1BZA6Mi/55FEaRivFLcZ9gY3YXhdkK9CrdYynbP4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T09:48:34.747555Z"},"content_sha256":"476aaf084cc247042ed197cca888194ca501c108cbbbbe2eb224a46d7299d79d","schema_version":"1.0","event_id":"sha256:476aaf084cc247042ed197cca888194ca501c108cbbbbe2eb224a46d7299d79d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:XVWMX6AZHIZVVG4XVJOOVW5Y7K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneous Exoplanet Characterization and deep wide-field imaging with a diffractive pupil telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"2), (2) Subaru Telescope, 3), (3) NASA Ames, (4) Lawrence Livermore National Laboratory, (5) Jet Propulsion Laboratory, (6) Exploration Sciences, (7) Lockheed Martin), Bijan Nemati (5), Eduardo A. Bendek (1, Frantz Martinache (2), Joe Pitman (6), Josh A. Eisner (1), Marie Levine (5), Michael Shao (5), Neville J. Woolf (1), Olivier Guyon (1, Robert A. Woodruff (7), Roger Angel (1), Ruslan Belikov (3) ((1) University of Arizona, Stephen M. Ammons (4), Stuart Shaklan (5), Thomas D. Milster (1)","submitted_at":"2013-04-01T15:05:09Z","abstract_excerpt":"High-precision astrometry can identify exoplanets and measure their orbits and masses, while coronagraphic imaging enables detailed characterization of their physical properties and atmospheric compositions through spectroscopy. In a previous paper, we showed that a diffractive pupil telescope (DPT) in space can enable sub-microarcsecond accuracy astrometric measurements from wide-field images by creating faint but sharp diffraction spikes around the bright target star. The DPT allows simultaneous astrometric measurement and coronagraphic imaging, and we discuss and quantify in this paper the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.0373","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:29:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zXLaPvgc5L90K0du7hOqCyRCb1TqKQ4Jue6kULRTM1SJZUjgrcOMxLVZIce+ZYGJ69tUrVr42aVZ9R5PyNSgDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T09:48:34.747919Z"},"content_sha256":"58b43215a8b42928296153f9abe4ebec5917d9c40da2c6a0b50c5026fa0f6d45","schema_version":"1.0","event_id":"sha256:58b43215a8b42928296153f9abe4ebec5917d9c40da2c6a0b50c5026fa0f6d45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K/bundle.json","state_url":"https://pith.science/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-02T09:48:34Z","links":{"resolver":"https://pith.science/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K","bundle":"https://pith.science/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K/bundle.json","state":"https://pith.science/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XVWMX6AZHIZVVG4XVJOOVW5Y7K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:XVWMX6AZHIZVVG4XVJOOVW5Y7K","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":"bd17f9ac6127f140f06fc0956cbcc4703aa98287a7176a5a4cf7062a124b2a69","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-01T15:05:09Z","title_canon_sha256":"6c2bfe4853df4a23e05f57dc1f86039360701988f443f3ed3566d3ff48278eed"},"schema_version":"1.0","source":{"id":"1304.0373","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.0373","created_at":"2026-05-18T03:29:17Z"},{"alias_kind":"arxiv_version","alias_value":"1304.0373v1","created_at":"2026-05-18T03:29:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.0373","created_at":"2026-05-18T03:29:17Z"},{"alias_kind":"pith_short_12","alias_value":"XVWMX6AZHIZV","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XVWMX6AZHIZVVG4X","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XVWMX6AZ","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:58b43215a8b42928296153f9abe4ebec5917d9c40da2c6a0b50c5026fa0f6d45","target":"graph","created_at":"2026-05-18T03:29:17Z","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"},"paper":{"abstract_excerpt":"High-precision astrometry can identify exoplanets and measure their orbits and masses, while coronagraphic imaging enables detailed characterization of their physical properties and atmospheric compositions through spectroscopy. In a previous paper, we showed that a diffractive pupil telescope (DPT) in space can enable sub-microarcsecond accuracy astrometric measurements from wide-field images by creating faint but sharp diffraction spikes around the bright target star. The DPT allows simultaneous astrometric measurement and coronagraphic imaging, and we discuss and quantify in this paper the ","authors_text":"2), (2) Subaru Telescope, 3), (3) NASA Ames, (4) Lawrence Livermore National Laboratory, (5) Jet Propulsion Laboratory, (6) Exploration Sciences, (7) Lockheed Martin), Bijan Nemati (5), Eduardo A. Bendek (1, Frantz Martinache (2), Joe Pitman (6), Josh A. Eisner (1), Marie Levine (5), Michael Shao (5), Neville J. Woolf (1), Olivier Guyon (1, Robert A. Woodruff (7), Roger Angel (1), Ruslan Belikov (3) ((1) University of Arizona, Stephen M. Ammons (4), Stuart Shaklan (5), Thomas D. Milster (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-01T15:05:09Z","title":"Simultaneous Exoplanet Characterization and deep wide-field imaging with a diffractive pupil telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.0373","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":"sha256:476aaf084cc247042ed197cca888194ca501c108cbbbbe2eb224a46d7299d79d","target":"record","created_at":"2026-05-18T03:29:17Z","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":"bd17f9ac6127f140f06fc0956cbcc4703aa98287a7176a5a4cf7062a124b2a69","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-01T15:05:09Z","title_canon_sha256":"6c2bfe4853df4a23e05f57dc1f86039360701988f443f3ed3566d3ff48278eed"},"schema_version":"1.0","source":{"id":"1304.0373","kind":"arxiv","version":1}},"canonical_sha256":"bd6ccbf8193a335a9b97aa5ceadbb8fabd20bd9cfc9c989a2825a0d3a9054f0b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd6ccbf8193a335a9b97aa5ceadbb8fabd20bd9cfc9c989a2825a0d3a9054f0b","first_computed_at":"2026-05-18T03:29:17.129227Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:29:17.129227Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tTRRqOduO9gcyU205qoQGI8pK8pxuPTom1/2qrfGR9PYmygFoQDsvZXL5umFGw+a9psGkI6GqTx8H3fheOr7DA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:29:17.129923Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.0373","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:476aaf084cc247042ed197cca888194ca501c108cbbbbe2eb224a46d7299d79d","sha256:58b43215a8b42928296153f9abe4ebec5917d9c40da2c6a0b50c5026fa0f6d45"],"state_sha256":"3072a014379ae2d2b87bcff1f5b3d115dfe44289e47708a86dd150fb14ace911"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I4eMOR3oje5R3auWnO+XZCur9gJ8L1hDpoTM6nSQ1qjOvujVREH5rEq1gEENYKRyFNe3bJtN7YmdvldDGV3CBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T09:48:34.749849Z","bundle_sha256":"88960304739d12974a11392af8797c78e3c5834f807bf31ec16c8265fdc8e7e5"}}