{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:2CSA4S7YXQMOOP3BFFCOUEMFRE","short_pith_number":"pith:2CSA4S7Y","canonical_record":{"source":{"id":"1803.08682","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-23T08:16:04Z","cross_cats_sorted":[],"title_canon_sha256":"2951693525b1b51cccc890b53bf29fa26eb60b17b5c414f31ce3e93d26e9ba13","abstract_canon_sha256":"3283ac93cbcad75a9121f5bb581da7b826ef9261ad8c7e0935e5121c3dfe64ff"},"schema_version":"1.0"},"canonical_sha256":"d0a40e4bf8bc18e73f612944ea118589208db9c97d8b370170ab618abb45f531","source":{"kind":"arxiv","id":"1803.08682","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08682","created_at":"2026-05-18T00:20:18Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08682v1","created_at":"2026-05-18T00:20:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08682","created_at":"2026-05-18T00:20:18Z"},{"alias_kind":"pith_short_12","alias_value":"2CSA4S7YXQMO","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"2CSA4S7YXQMOOP3B","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"2CSA4S7Y","created_at":"2026-05-18T12:31:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:2CSA4S7YXQMOOP3BFFCOUEMFRE","target":"record","payload":{"canonical_record":{"source":{"id":"1803.08682","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-23T08:16:04Z","cross_cats_sorted":[],"title_canon_sha256":"2951693525b1b51cccc890b53bf29fa26eb60b17b5c414f31ce3e93d26e9ba13","abstract_canon_sha256":"3283ac93cbcad75a9121f5bb581da7b826ef9261ad8c7e0935e5121c3dfe64ff"},"schema_version":"1.0"},"canonical_sha256":"d0a40e4bf8bc18e73f612944ea118589208db9c97d8b370170ab618abb45f531","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:18.849526Z","signature_b64":"yLqfiVn0JOh+N5lykQ0rSA/yFqx4NBF0BTcMNE51aT/o+9k47bAXBjbukwiAHZqtmyuHNaI2sXnXdI644wZ9CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0a40e4bf8bc18e73f612944ea118589208db9c97d8b370170ab618abb45f531","last_reissued_at":"2026-05-18T00:20:18.848830Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:18.848830Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.08682","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":"2026-05-18T00:20:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3DXaj6mOA1MVTLs2cNUir2VenRssHrn+sVZNnV3oieXYhyS051R1B+H7XolVS57BLColxaB1lbmPz0RTpPt0Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:05:19.838093Z"},"content_sha256":"6f423c730475eaa1964a348f057dc80dfc89084c4f9dda3dfe5f32f33d1bee7a","schema_version":"1.0","event_id":"sha256:6f423c730475eaa1964a348f057dc80dfc89084c4f9dda3dfe5f32f33d1bee7a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:2CSA4S7YXQMOOP3BFFCOUEMFRE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A comprehensive understanding of planet formation is required for assessing planetary habitability and for the search for life","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alex Bixel, Andrew Youdin, D\\'aniel Apai, Edwin Bergin, Fred Ciesla, Gijs D. Mulders, Hannah Jang-Condell, Ilaria Pascucci, Johanna Teske, Klaus Pontoppidan, Michael R. Meyer, Neal Turner, Renu Malhotra, Richard Barry, Sean Brittain, Shawn D. Domagal-Goldman, Yasuhiro Hasegawa","submitted_at":"2018-03-23T08:16:04Z","abstract_excerpt":"Dozens of habitable zone, approximately earth-sized exoplanets are known today. An emerging frontier of exoplanet studies is identifying which of these habitable zone, small planets are actually habitable (have all necessary conditions for life) and, of those, which are earth-like. Many parameters and processes influence habitability, ranging from the orbit through detailed composition including volatiles and organics, to the presence of geological activity and plate tectonics. While some properties will soon be directly observable, others cannot be probed by remote sensing for the foreseeable"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08682","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":"2026-05-18T00:20:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"apeMBItXgMgkbWj9I+EECrE30Xowu1KAPtbGZJ5FBvmvB74LEz3WD9tifHuxCabo0h8E4qUiLTjPL07Z+8ICBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T23:05:19.838465Z"},"content_sha256":"f579169720b342fe476b6c9723563dbe1473ac6a6d842ae21cbe06784d8fef36","schema_version":"1.0","event_id":"sha256:f579169720b342fe476b6c9723563dbe1473ac6a6d842ae21cbe06784d8fef36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE/bundle.json","state_url":"https://pith.science/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE/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":"2026-06-02T23:05:19Z","links":{"resolver":"https://pith.science/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE","bundle":"https://pith.science/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE/bundle.json","state":"https://pith.science/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2CSA4S7YXQMOOP3BFFCOUEMFRE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2CSA4S7YXQMOOP3BFFCOUEMFRE","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":"3283ac93cbcad75a9121f5bb581da7b826ef9261ad8c7e0935e5121c3dfe64ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-23T08:16:04Z","title_canon_sha256":"2951693525b1b51cccc890b53bf29fa26eb60b17b5c414f31ce3e93d26e9ba13"},"schema_version":"1.0","source":{"id":"1803.08682","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.08682","created_at":"2026-05-18T00:20:18Z"},{"alias_kind":"arxiv_version","alias_value":"1803.08682v1","created_at":"2026-05-18T00:20:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.08682","created_at":"2026-05-18T00:20:18Z"},{"alias_kind":"pith_short_12","alias_value":"2CSA4S7YXQMO","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"2CSA4S7YXQMOOP3B","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"2CSA4S7Y","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:f579169720b342fe476b6c9723563dbe1473ac6a6d842ae21cbe06784d8fef36","target":"graph","created_at":"2026-05-18T00:20:18Z","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":"Dozens of habitable zone, approximately earth-sized exoplanets are known today. An emerging frontier of exoplanet studies is identifying which of these habitable zone, small planets are actually habitable (have all necessary conditions for life) and, of those, which are earth-like. Many parameters and processes influence habitability, ranging from the orbit through detailed composition including volatiles and organics, to the presence of geological activity and plate tectonics. While some properties will soon be directly observable, others cannot be probed by remote sensing for the foreseeable","authors_text":"Alex Bixel, Andrew Youdin, D\\'aniel Apai, Edwin Bergin, Fred Ciesla, Gijs D. Mulders, Hannah Jang-Condell, Ilaria Pascucci, Johanna Teske, Klaus Pontoppidan, Michael R. Meyer, Neal Turner, Renu Malhotra, Richard Barry, Sean Brittain, Shawn D. Domagal-Goldman, Yasuhiro Hasegawa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-23T08:16:04Z","title":"A comprehensive understanding of planet formation is required for assessing planetary habitability and for the search for life"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.08682","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":"sha256:6f423c730475eaa1964a348f057dc80dfc89084c4f9dda3dfe5f32f33d1bee7a","target":"record","created_at":"2026-05-18T00:20:18Z","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":"3283ac93cbcad75a9121f5bb581da7b826ef9261ad8c7e0935e5121c3dfe64ff","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2018-03-23T08:16:04Z","title_canon_sha256":"2951693525b1b51cccc890b53bf29fa26eb60b17b5c414f31ce3e93d26e9ba13"},"schema_version":"1.0","source":{"id":"1803.08682","kind":"arxiv","version":1}},"canonical_sha256":"d0a40e4bf8bc18e73f612944ea118589208db9c97d8b370170ab618abb45f531","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0a40e4bf8bc18e73f612944ea118589208db9c97d8b370170ab618abb45f531","first_computed_at":"2026-05-18T00:20:18.848830Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:18.848830Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yLqfiVn0JOh+N5lykQ0rSA/yFqx4NBF0BTcMNE51aT/o+9k47bAXBjbukwiAHZqtmyuHNaI2sXnXdI644wZ9CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:18.849526Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.08682","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f423c730475eaa1964a348f057dc80dfc89084c4f9dda3dfe5f32f33d1bee7a","sha256:f579169720b342fe476b6c9723563dbe1473ac6a6d842ae21cbe06784d8fef36"],"state_sha256":"38a77dc6f847bf8712e75755e1f8e28af6379e8f3e7a78e2d42db96e8c805dbc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fWFbDHo+RWY4/NOhxLs7eOyzYNj8OgtiVH2qU1717hk02J9FKTmJnif6IlinV2W1VgV7PVyxyy4ogEHeMBtzDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T23:05:19.840618Z","bundle_sha256":"4b6b9f2e4c96105c88a2e3bc3f022be343811a7c37982160fb441e8cc6fa2e23"}}