{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:JH6CX34JV2IVKOXT4KELDN562L","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":"8ea2fc91db62ceecd35df1624309d45a1e0ca6cc4a444c9da5439884226f89c9","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-06-12T18:19:26Z","title_canon_sha256":"a8d763a166df85e88cb6df2c980a726a80a8e05b31830a6a75cf6a4bddab120c"},"schema_version":"1.0","source":{"id":"2006.07403","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.07403","created_at":"2026-07-05T01:22:48Z"},{"alias_kind":"arxiv_version","alias_value":"2006.07403v1","created_at":"2026-07-05T01:22:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.07403","created_at":"2026-07-05T01:22:48Z"},{"alias_kind":"pith_short_12","alias_value":"JH6CX34JV2IV","created_at":"2026-07-05T01:22:48Z"},{"alias_kind":"pith_short_16","alias_value":"JH6CX34JV2IVKOXT","created_at":"2026-07-05T01:22:48Z"},{"alias_kind":"pith_short_8","alias_value":"JH6CX34J","created_at":"2026-07-05T01:22:48Z"}],"graph_snapshots":[{"event_id":"sha256:2dc13c110fad72abc666c237d490d70ec185d69a25725edc3837f4de5dbb9f8c","target":"graph","created_at":"2026-07-05T01:22:48Z","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/2006.07403/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the next decades, the astrobiological community will debate whether the first observations of oxygen in an exoplanet$'$s atmosphere signifies life, so it is critical to establish procedures now for collection and interpretation of such data. We present a step-by-step observational strategy for using oxygen as a robust biosignature, to prioritize exoplanet targets and design future observations. It is premised on avoiding planets lacking subaerial weathering of continents, which would imply geochemical cycles drastically different from Earth$'$s, precluding use of oxygen as a biosignature. T","authors_text":"Carey M. Lisse, Cayman T. Unterborn, Eric E. Mamajek, Hilairy E. Hartnett, Natalie R. Hinkel, Noam R. Izenberg, Patrick R. Young, Sang Heon Shim, Stephen R. Kane, Steven J. Desch","cross_cats":["astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-06-12T18:19:26Z","title":"A Geologically Robust Procedure For Observing Rocky Exoplanets to Ensure that Detection of Atmospheric Oxygen is an Earth-Like Biosignature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.07403","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":"sha256:8e3e0093665616bd4533f47bf008e1901e5994c0a62712c1d6f9332c0553dfb0","target":"record","created_at":"2026-07-05T01:22:48Z","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":"8ea2fc91db62ceecd35df1624309d45a1e0ca6cc4a444c9da5439884226f89c9","cross_cats_sorted":["astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-06-12T18:19:26Z","title_canon_sha256":"a8d763a166df85e88cb6df2c980a726a80a8e05b31830a6a75cf6a4bddab120c"},"schema_version":"1.0","source":{"id":"2006.07403","kind":"arxiv","version":1}},"canonical_sha256":"49fc2bef89ae91553af3e288b1b7bed2e48c66e4d6d90ed88ea0cd56c12cb1b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"49fc2bef89ae91553af3e288b1b7bed2e48c66e4d6d90ed88ea0cd56c12cb1b8","first_computed_at":"2026-07-05T01:22:48.256944Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:22:48.256944Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ObNLlFvNqFvmSVavRMXo20A2b076AWWXCTxFCbZIsA+e4gNuPgEN3J99/zKnPZ9Xnct8ja+mfARBMJTtBBfDBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:22:48.257384Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.07403","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e3e0093665616bd4533f47bf008e1901e5994c0a62712c1d6f9332c0553dfb0","sha256:2dc13c110fad72abc666c237d490d70ec185d69a25725edc3837f4de5dbb9f8c"],"state_sha256":"0ae6dec903b466ea92c59f310978ac7ea660a965d867025a7e499aa2bdb224f3"}