{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HBUDLFL4XSSBONV7VJUQBHPORF","short_pith_number":"pith:HBUDLFL4","canonical_record":{"source":{"id":"1908.06192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-08-16T22:09:00Z","cross_cats_sorted":[],"title_canon_sha256":"5b68490f4c18fc8290d35940e8d39489c81bc2b10f74c47b66a3ff64b44cbbe1","abstract_canon_sha256":"3b92055fe93e0caac14f753e400d87048f2a312a5f53ea3698da5ec67981a943"},"schema_version":"1.0"},"canonical_sha256":"386835957cbca41736bfaa69009dee894f08a5acf1147927b9ce334dcfd612f5","source":{"kind":"arxiv","id":"1908.06192","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.06192","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"arxiv_version","alias_value":"1908.06192v1","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.06192","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"pith_short_12","alias_value":"HBUDLFL4XSSB","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"pith_short_16","alias_value":"HBUDLFL4XSSBONV7","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"pith_short_8","alias_value":"HBUDLFL4","created_at":"2026-07-05T00:08:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HBUDLFL4XSSBONV7VJUQBHPORF","target":"record","payload":{"canonical_record":{"source":{"id":"1908.06192","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-08-16T22:09:00Z","cross_cats_sorted":[],"title_canon_sha256":"5b68490f4c18fc8290d35940e8d39489c81bc2b10f74c47b66a3ff64b44cbbe1","abstract_canon_sha256":"3b92055fe93e0caac14f753e400d87048f2a312a5f53ea3698da5ec67981a943"},"schema_version":"1.0"},"canonical_sha256":"386835957cbca41736bfaa69009dee894f08a5acf1147927b9ce334dcfd612f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:08:37.198143Z","signature_b64":"zGpCejjU6Wo/iUZBJQ3YB5TVArSlvQs8Becc14ROzhXxWdffoU0Z2VY2PwJXYW2YSoo9v094/KqaqZxJCo5CAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"386835957cbca41736bfaa69009dee894f08a5acf1147927b9ce334dcfd612f5","last_reissued_at":"2026-07-05T00:08:37.197745Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:08:37.197745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.06192","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":"2026-07-05T00:08:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/yNXy7saGZEHKtSdr0wrXHpL79sZKciYrzAOSSdvxwHRskC9TSUfDmZL/LKMsVSb0rEJvlPYf/zIX1h3Pr2aBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:56:07.432006Z"},"content_sha256":"84fb9293ce5a16b6b41215e3ddce7045031436ae81a461552897c39d5ec83d4e","schema_version":"1.0","event_id":"sha256:84fb9293ce5a16b6b41215e3ddce7045031436ae81a461552897c39d5ec83d4e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HBUDLFL4XSSBONV7VJUQBHPORF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The impact of stripped cores on the frequency of Earth-size planets in the habitable zone","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"E. Lopez, G. Mulders, I. Pascucci","submitted_at":"2019-08-16T22:09:00Z","abstract_excerpt":"The frequency of Earth-size planets in the habitable zone of Sun-like stars, hereafter $\\eta_\\oplus$, is a key parameter to evaluate the yield of nearby Earth analogues that can be detected and characterized by future missions. Yet, this value is poorly constrained as there are no reliable exoplanet candidates in the habitable zone of Sun-like stars in the Kepler field. Here, we show that extrapolations relying on the population of small ($< 1.8\\,R_\\oplus$) short-period ($< 25\\,$days) planets bias $\\eta_\\oplus$ to large values. As the radius distribution at short orbital periods is strongly af"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.06192","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/1908.06192/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":"2026-07-05T00:08:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ALkNZpmruf5hEB0bMs9UQBqfd30EPaKnAD5VJPxzUf9qIKRj9y+lp/weM8E4XFpvGjprn7/Y2SIHkDK0G5E0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:56:07.432487Z"},"content_sha256":"53f1de541d80307972f1c76bf31c4474b63a4b31eafd6548555f4ae2bf71bcb5","schema_version":"1.0","event_id":"sha256:53f1de541d80307972f1c76bf31c4474b63a4b31eafd6548555f4ae2bf71bcb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HBUDLFL4XSSBONV7VJUQBHPORF/bundle.json","state_url":"https://pith.science/pith/HBUDLFL4XSSBONV7VJUQBHPORF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HBUDLFL4XSSBONV7VJUQBHPORF/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":"2026-08-15T06:56:07Z","links":{"resolver":"https://pith.science/pith/HBUDLFL4XSSBONV7VJUQBHPORF","bundle":"https://pith.science/pith/HBUDLFL4XSSBONV7VJUQBHPORF/bundle.json","state":"https://pith.science/pith/HBUDLFL4XSSBONV7VJUQBHPORF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HBUDLFL4XSSBONV7VJUQBHPORF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HBUDLFL4XSSBONV7VJUQBHPORF","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":"3b92055fe93e0caac14f753e400d87048f2a312a5f53ea3698da5ec67981a943","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-08-16T22:09:00Z","title_canon_sha256":"5b68490f4c18fc8290d35940e8d39489c81bc2b10f74c47b66a3ff64b44cbbe1"},"schema_version":"1.0","source":{"id":"1908.06192","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.06192","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"arxiv_version","alias_value":"1908.06192v1","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.06192","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"pith_short_12","alias_value":"HBUDLFL4XSSB","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"pith_short_16","alias_value":"HBUDLFL4XSSBONV7","created_at":"2026-07-05T00:08:37Z"},{"alias_kind":"pith_short_8","alias_value":"HBUDLFL4","created_at":"2026-07-05T00:08:37Z"}],"graph_snapshots":[{"event_id":"sha256:53f1de541d80307972f1c76bf31c4474b63a4b31eafd6548555f4ae2bf71bcb5","target":"graph","created_at":"2026-07-05T00:08:37Z","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/1908.06192/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The frequency of Earth-size planets in the habitable zone of Sun-like stars, hereafter $\\eta_\\oplus$, is a key parameter to evaluate the yield of nearby Earth analogues that can be detected and characterized by future missions. Yet, this value is poorly constrained as there are no reliable exoplanet candidates in the habitable zone of Sun-like stars in the Kepler field. Here, we show that extrapolations relying on the population of small ($< 1.8\\,R_\\oplus$) short-period ($< 25\\,$days) planets bias $\\eta_\\oplus$ to large values. As the radius distribution at short orbital periods is strongly af","authors_text":"E. Lopez, G. Mulders, I. Pascucci","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-08-16T22:09:00Z","title":"The impact of stripped cores on the frequency of Earth-size planets in the habitable zone"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.06192","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":"sha256:84fb9293ce5a16b6b41215e3ddce7045031436ae81a461552897c39d5ec83d4e","target":"record","created_at":"2026-07-05T00:08:37Z","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":"3b92055fe93e0caac14f753e400d87048f2a312a5f53ea3698da5ec67981a943","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-08-16T22:09:00Z","title_canon_sha256":"5b68490f4c18fc8290d35940e8d39489c81bc2b10f74c47b66a3ff64b44cbbe1"},"schema_version":"1.0","source":{"id":"1908.06192","kind":"arxiv","version":1}},"canonical_sha256":"386835957cbca41736bfaa69009dee894f08a5acf1147927b9ce334dcfd612f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"386835957cbca41736bfaa69009dee894f08a5acf1147927b9ce334dcfd612f5","first_computed_at":"2026-07-05T00:08:37.197745Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:08:37.197745Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zGpCejjU6Wo/iUZBJQ3YB5TVArSlvQs8Becc14ROzhXxWdffoU0Z2VY2PwJXYW2YSoo9v094/KqaqZxJCo5CAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:08:37.198143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.06192","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:84fb9293ce5a16b6b41215e3ddce7045031436ae81a461552897c39d5ec83d4e","sha256:53f1de541d80307972f1c76bf31c4474b63a4b31eafd6548555f4ae2bf71bcb5"],"state_sha256":"bd7ece5e044c8566b6db93ec00aeae7f4d6e3c60dc0a7b70e799b57f72559fee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GnqgDh2UgwjMP3Lhba9s+jCD53y7wVlmv0s3pTmbYiDbFEJ/KzVnZoZR0ETqQINT58lRNufoB05p9HBaPW/PDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T06:56:07.437062Z","bundle_sha256":"14a37dd6820bc3fbd55ea6ea33e431357e50cdf07bc62efb2a658955b37bca8d"}}