{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:2A7XOTAQYV76G7DPMPRKARVLYN","short_pith_number":"pith:2A7XOTAQ","canonical_record":{"source":{"id":"1903.03706","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-09T00:35:01Z","cross_cats_sorted":[],"title_canon_sha256":"58d3d534cf784958f2eb266000865aaf55f811c87e608a984585dff68627f8f4","abstract_canon_sha256":"51f6e61cc8dcfc3db62f605371093e6807a8e56c0e2790ed2ef44d3fe8bed4e5"},"schema_version":"1.0"},"canonical_sha256":"d03f774c10c57fe37c6f63e2a046abc3692e2635f0db186bcffdd5c1d67d55d7","source":{"kind":"arxiv","id":"1903.03706","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03706","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03706v2","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03706","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"pith_short_12","alias_value":"2A7XOTAQYV76","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"2A7XOTAQYV76G7DP","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"2A7XOTAQ","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:2A7XOTAQYV76G7DPMPRKARVLYN","target":"record","payload":{"canonical_record":{"source":{"id":"1903.03706","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-09T00:35:01Z","cross_cats_sorted":[],"title_canon_sha256":"58d3d534cf784958f2eb266000865aaf55f811c87e608a984585dff68627f8f4","abstract_canon_sha256":"51f6e61cc8dcfc3db62f605371093e6807a8e56c0e2790ed2ef44d3fe8bed4e5"},"schema_version":"1.0"},"canonical_sha256":"d03f774c10c57fe37c6f63e2a046abc3692e2635f0db186bcffdd5c1d67d55d7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:29.539903Z","signature_b64":"9/uAqYnhom9CWjUlEifR2DIqWBX9PjWCIRt1JkYUs5ksWnruN7PqnkN1N+8Kyl6luN1M1gVo4ugEROFw4tk1CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d03f774c10c57fe37c6f63e2a046abc3692e2635f0db186bcffdd5c1d67d55d7","last_reissued_at":"2026-05-17T23:51:29.539358Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:29.539358Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.03706","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:51:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fE2Fj/OZXLEdzGCk8yxsA50LtHr3RwQjIFV36OwOHXc+MygHypfNP9w+jIt9dHngsJkauSrpLO27L0iAt+ZADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:34:51.583217Z"},"content_sha256":"fa978bb1ac2e155e3a4fce139d7d133e15e55cd6045164dee7a197a42fc36556","schema_version":"1.0","event_id":"sha256:fa978bb1ac2e155e3a4fce139d7d133e15e55cd6045164dee7a197a42fc36556"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:2A7XOTAQYV76G7DPMPRKARVLYN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Habitable zone predictions and how to test them","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Amit Levi, Andrew Rushby, Dorian S. Abbot, Edwin Kite, Elizabeth Tasker, Giovanni Vladilo, Keiko Hamano, Laura Schaefer, Manasvi Lingam, Ramses M. Ramirez, Robin D. Wordsworth, Theresa Lueftinger, Tyler D. Robinson, Yuka Fujii","submitted_at":"2019-03-09T00:35:01Z","abstract_excerpt":"The habitable zone (HZ) is the region around a star(s) where standing bodies of water could exist on the surface of a rocky planet. The classical HZ definition makes a number of assumptions common to the Earth, including assuming that the most important greenhouse gases for habitable planets are CO2 and H2O, habitable planets orbit main-sequence stars, and that the carbonate-silicate cycle is a universal process on potentially habitable planets. Here, we discuss these and other predictions for the habitable zone and the observations that are needed to test them. We also, for the first time, ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03706","kind":"arxiv","version":2},"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":"2026-05-17T23:51:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+2PMiHtQO9qoo7H/mbXI76kx+vMuJnxJJKUWtNmeSnj2OOx3F/TqFMbssGgrIfRpx36anpCj6F6LailrMavdDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T23:34:51.583901Z"},"content_sha256":"2d927a3b9dc9120ce62ade3344469a97f476c1ed10558c1e2ecfdbff5116b8b2","schema_version":"1.0","event_id":"sha256:2d927a3b9dc9120ce62ade3344469a97f476c1ed10558c1e2ecfdbff5116b8b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2A7XOTAQYV76G7DPMPRKARVLYN/bundle.json","state_url":"https://pith.science/pith/2A7XOTAQYV76G7DPMPRKARVLYN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2A7XOTAQYV76G7DPMPRKARVLYN/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":"2026-05-25T23:34:51Z","links":{"resolver":"https://pith.science/pith/2A7XOTAQYV76G7DPMPRKARVLYN","bundle":"https://pith.science/pith/2A7XOTAQYV76G7DPMPRKARVLYN/bundle.json","state":"https://pith.science/pith/2A7XOTAQYV76G7DPMPRKARVLYN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2A7XOTAQYV76G7DPMPRKARVLYN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:2A7XOTAQYV76G7DPMPRKARVLYN","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":"51f6e61cc8dcfc3db62f605371093e6807a8e56c0e2790ed2ef44d3fe8bed4e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-09T00:35:01Z","title_canon_sha256":"58d3d534cf784958f2eb266000865aaf55f811c87e608a984585dff68627f8f4"},"schema_version":"1.0","source":{"id":"1903.03706","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.03706","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"arxiv_version","alias_value":"1903.03706v2","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.03706","created_at":"2026-05-17T23:51:29Z"},{"alias_kind":"pith_short_12","alias_value":"2A7XOTAQYV76","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"2A7XOTAQYV76G7DP","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"2A7XOTAQ","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:2d927a3b9dc9120ce62ade3344469a97f476c1ed10558c1e2ecfdbff5116b8b2","target":"graph","created_at":"2026-05-17T23:51:29Z","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":"The habitable zone (HZ) is the region around a star(s) where standing bodies of water could exist on the surface of a rocky planet. The classical HZ definition makes a number of assumptions common to the Earth, including assuming that the most important greenhouse gases for habitable planets are CO2 and H2O, habitable planets orbit main-sequence stars, and that the carbonate-silicate cycle is a universal process on potentially habitable planets. Here, we discuss these and other predictions for the habitable zone and the observations that are needed to test them. We also, for the first time, ar","authors_text":"Amit Levi, Andrew Rushby, Dorian S. Abbot, Edwin Kite, Elizabeth Tasker, Giovanni Vladilo, Keiko Hamano, Laura Schaefer, Manasvi Lingam, Ramses M. Ramirez, Robin D. Wordsworth, Theresa Lueftinger, Tyler D. Robinson, Yuka Fujii","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-09T00:35:01Z","title":"Habitable zone predictions and how to test them"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.03706","kind":"arxiv","version":2},"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:fa978bb1ac2e155e3a4fce139d7d133e15e55cd6045164dee7a197a42fc36556","target":"record","created_at":"2026-05-17T23:51:29Z","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":"51f6e61cc8dcfc3db62f605371093e6807a8e56c0e2790ed2ef44d3fe8bed4e5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-03-09T00:35:01Z","title_canon_sha256":"58d3d534cf784958f2eb266000865aaf55f811c87e608a984585dff68627f8f4"},"schema_version":"1.0","source":{"id":"1903.03706","kind":"arxiv","version":2}},"canonical_sha256":"d03f774c10c57fe37c6f63e2a046abc3692e2635f0db186bcffdd5c1d67d55d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d03f774c10c57fe37c6f63e2a046abc3692e2635f0db186bcffdd5c1d67d55d7","first_computed_at":"2026-05-17T23:51:29.539358Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:29.539358Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9/uAqYnhom9CWjUlEifR2DIqWBX9PjWCIRt1JkYUs5ksWnruN7PqnkN1N+8Kyl6luN1M1gVo4ugEROFw4tk1CA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:29.539903Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.03706","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fa978bb1ac2e155e3a4fce139d7d133e15e55cd6045164dee7a197a42fc36556","sha256:2d927a3b9dc9120ce62ade3344469a97f476c1ed10558c1e2ecfdbff5116b8b2"],"state_sha256":"43f7fe79eabfd056fc9fe16ed845cd90eb9abf16cb19c79ddae4abe72cbfe750"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qjkM8V2FUeFwUZtvCtX5ZbEDi/RHipS6LY/oJrgyVHnRgMgdokJu3BtQdgnTSQCm7hyIKkYuiyFD3x9O4a0GBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T23:34:51.587681Z","bundle_sha256":"1e01a48d151635e3f7e3ae348e9745f55e8230855133b8b526d1b4f9005919fd"}}