{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:T53YWSRBQF24SCYWNIV4A2KSN3","short_pith_number":"pith:T53YWSRB","canonical_record":{"source":{"id":"astro-ph/0409218","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-09T12:17:33Z","cross_cats_sorted":[],"title_canon_sha256":"a35d0087c96bcfa784e6d5ddb3a85c0e23b6e34504a401ec26ddf0bdbed38eda","abstract_canon_sha256":"9f96c8e31b3327e86e5b078a691366d06f450185f22d4f5736426dc282ba76ba"},"schema_version":"1.0"},"canonical_sha256":"9f778b4a218175c90b166a2bc069526eeed1881044bf15f077a4e4657ab5b6fd","source":{"kind":"arxiv","id":"astro-ph/0409218","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0409218","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0409218v1","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0409218","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"pith_short_12","alias_value":"T53YWSRBQF24","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"pith_short_16","alias_value":"T53YWSRBQF24SCYW","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"pith_short_8","alias_value":"T53YWSRB","created_at":"2026-07-04T16:44:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:T53YWSRBQF24SCYWNIV4A2KSN3","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0409218","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-09T12:17:33Z","cross_cats_sorted":[],"title_canon_sha256":"a35d0087c96bcfa784e6d5ddb3a85c0e23b6e34504a401ec26ddf0bdbed38eda","abstract_canon_sha256":"9f96c8e31b3327e86e5b078a691366d06f450185f22d4f5736426dc282ba76ba"},"schema_version":"1.0"},"canonical_sha256":"9f778b4a218175c90b166a2bc069526eeed1881044bf15f077a4e4657ab5b6fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:44:39.889201Z","signature_b64":"uVbVn5qScs0nt7Rmg3Duxvl0SHg/wbr8tCP4oCamceGEzF5TgiBysgNWoiuViYWx+8Pi9cfqVjkHyzI2dyJQDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f778b4a218175c90b166a2bc069526eeed1881044bf15f077a4e4657ab5b6fd","last_reissued_at":"2026-07-04T16:44:39.888750Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:44:39.888750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0409218","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":"2026-07-04T16:44:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UoEFse+LYDiU61CINPaI6apdFHuqdT6aEcYsYuYnXT7YmpcLI4RC+AHgeTcMClW4v1ooiRjI14SSjx3sNG4OAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T04:01:52.434149Z"},"content_sha256":"d4789e4068eb0798be647adf43d74bb0fc436d9ac93d90f111c73ba391e9c0ef","schema_version":"1.0","event_id":"sha256:d4789e4068eb0798be647adf43d74bb0fc436d9ac93d90f111c73ba391e9c0ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:T53YWSRBQF24SCYWNIV4A2KSN3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Microlensing Planet Finder: Completing the Census of Extrasolar Planets in the Milky Way","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Gould, A. Udalski, B. Gaudi, B. Paczynski, B. Rauscher, D. Minniti, D. P. Bennett, D. Tenerelli, E. Cheng, I. Bond, J. Lunine, J. Mather, K. Griest, K. Sahu, M. Greenhouse, M. Niedner, M. Rich, N. Woolf, P. Garnavich, P. Yock, R. Gilliland, R. Kimble, S. Friedman, S. Peale","submitted_at":"2004-09-09T12:17:33Z","abstract_excerpt":"The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system. MPF will employ a 1.1m aperture telescope, which images a 1.3 sq. deg. field-of-view in the near-IR, in order to detect extrasolar planets with the gravitational microlensing effect. MPF's sensitivity extends down to planets of 0.1 Earth masses, and MPF can detect Earth-like planets at all separations from 0.7AU to infinity. MPF's extrasolar planet census will provide critical information needed to underst"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0409218","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0409218/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T16:44:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PiihS9YKmsLsfYn5ENrHf/tz70YvosN4sYe1eqtNxtjqDjJ0tA6S66ufaih+ylvfYtiMsIUy6V1rpX4XXfH+CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T04:01:52.434538Z"},"content_sha256":"f2ac7848ea7bbc3dd67f3b99e90ef709ebda5fb91755681107366abfc4c91dbb","schema_version":"1.0","event_id":"sha256:f2ac7848ea7bbc3dd67f3b99e90ef709ebda5fb91755681107366abfc4c91dbb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T53YWSRBQF24SCYWNIV4A2KSN3/bundle.json","state_url":"https://pith.science/pith/T53YWSRBQF24SCYWNIV4A2KSN3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T53YWSRBQF24SCYWNIV4A2KSN3/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":"2026-07-05T04:01:52Z","links":{"resolver":"https://pith.science/pith/T53YWSRBQF24SCYWNIV4A2KSN3","bundle":"https://pith.science/pith/T53YWSRBQF24SCYWNIV4A2KSN3/bundle.json","state":"https://pith.science/pith/T53YWSRBQF24SCYWNIV4A2KSN3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T53YWSRBQF24SCYWNIV4A2KSN3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:T53YWSRBQF24SCYWNIV4A2KSN3","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":"9f96c8e31b3327e86e5b078a691366d06f450185f22d4f5736426dc282ba76ba","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-09T12:17:33Z","title_canon_sha256":"a35d0087c96bcfa784e6d5ddb3a85c0e23b6e34504a401ec26ddf0bdbed38eda"},"schema_version":"1.0","source":{"id":"astro-ph/0409218","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0409218","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0409218v1","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0409218","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"pith_short_12","alias_value":"T53YWSRBQF24","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"pith_short_16","alias_value":"T53YWSRBQF24SCYW","created_at":"2026-07-04T16:44:39Z"},{"alias_kind":"pith_short_8","alias_value":"T53YWSRB","created_at":"2026-07-04T16:44:39Z"}],"graph_snapshots":[{"event_id":"sha256:f2ac7848ea7bbc3dd67f3b99e90ef709ebda5fb91755681107366abfc4c91dbb","target":"graph","created_at":"2026-07-04T16:44:39Z","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/0409218/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Microlensing Planet Finder (MPF) is a proposed Discovery mission that will complete the first census of extrasolar planets with sensitivity to planets like those in our own solar system. MPF will employ a 1.1m aperture telescope, which images a 1.3 sq. deg. field-of-view in the near-IR, in order to detect extrasolar planets with the gravitational microlensing effect. MPF's sensitivity extends down to planets of 0.1 Earth masses, and MPF can detect Earth-like planets at all separations from 0.7AU to infinity. MPF's extrasolar planet census will provide critical information needed to underst","authors_text":"A. Gould, A. Udalski, B. Gaudi, B. Paczynski, B. Rauscher, D. Minniti, D. P. Bennett, D. Tenerelli, E. Cheng, I. Bond, J. Lunine, J. Mather, K. Griest, K. Sahu, M. Greenhouse, M. Niedner, M. Rich, N. Woolf, P. Garnavich, P. Yock, R. Gilliland, R. Kimble, S. Friedman, S. Peale","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2004-09-09T12:17:33Z","title":"The Microlensing Planet Finder: Completing the Census of Extrasolar Planets in the Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0409218","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:d4789e4068eb0798be647adf43d74bb0fc436d9ac93d90f111c73ba391e9c0ef","target":"record","created_at":"2026-07-04T16:44:39Z","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":"9f96c8e31b3327e86e5b078a691366d06f450185f22d4f5736426dc282ba76ba","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2004-09-09T12:17:33Z","title_canon_sha256":"a35d0087c96bcfa784e6d5ddb3a85c0e23b6e34504a401ec26ddf0bdbed38eda"},"schema_version":"1.0","source":{"id":"astro-ph/0409218","kind":"arxiv","version":1}},"canonical_sha256":"9f778b4a218175c90b166a2bc069526eeed1881044bf15f077a4e4657ab5b6fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f778b4a218175c90b166a2bc069526eeed1881044bf15f077a4e4657ab5b6fd","first_computed_at":"2026-07-04T16:44:39.888750Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:44:39.888750Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uVbVn5qScs0nt7Rmg3Duxvl0SHg/wbr8tCP4oCamceGEzF5TgiBysgNWoiuViYWx+8Pi9cfqVjkHyzI2dyJQDw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:44:39.889201Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0409218","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4789e4068eb0798be647adf43d74bb0fc436d9ac93d90f111c73ba391e9c0ef","sha256:f2ac7848ea7bbc3dd67f3b99e90ef709ebda5fb91755681107366abfc4c91dbb"],"state_sha256":"fc8f513e7c924da102b2fc84d641389a31a0c5a4f7924216ef27b9da0c44d0ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a2Yb/pyB85y2tR19lBQ031RLIYEtGej3dJvsMqtS9A1Qzm/nHe/IF4hupBXMueAYI0MwPh9G18Eyp68cu8OQAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T04:01:52.436459Z","bundle_sha256":"17bc555f193b02a36c06a1920ad8008ce1df17130bb24a2a49d39cfff058766f"}}