{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:ZG3XZN2PZGHFAHWXYBPE35QRAN","short_pith_number":"pith:ZG3XZN2P","schema_version":"1.0","canonical_sha256":"c9b77cb74fc98e501ed7c05e4df6110357bdc6737a578bb789cd45a10683407a","source":{"kind":"arxiv","id":"2006.06433","version":1},"attestation_state":"computed","paper":{"title":"Coevolution of primitive methane cycling ecosystems and early Earth atmosphere and climate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"q-bio.PE","authors_text":"Antonin Affholder, Benjamin Charnay, Boris Sauterey, R\\'egis Ferri\\`ere, St\\'ephane Mazevet","submitted_at":"2020-06-09T14:02:55Z","abstract_excerpt":"The history of the Earth has been marked by major ecological transitions, driven by metabolic innovation, that radically reshaped the composition of the oceans and atmosphere. The nature and magnitude of the earliest transitions, hundreds of million years before photosynthesis evolved, remain poorly understood. Using a novel ecosystem-planetary model, we find that pre-photosynthetic methane-cycling microbial ecosystems are much less productive than previously thought. In spite of their low productivity, the evolution of methanogenic metabolisms strongly modifies the atmospheric composition, le"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2006.06433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2020-06-09T14:02:55Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"c3aa2f72bf1610c4df1f8bd7e534040545a2e382057c21e8bb497fb2601a0537","abstract_canon_sha256":"74c517f6e30eab038ed657e70d4070ed9e2544d5758e1d276c06cd2ff6b068a7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:09:33.703591Z","signature_b64":"96HDvE40LEGgSEOIP2poiXEtNvg9a0/PfjL3P02l87CJmHs1YtpBd0HT60OpTkfcbWzOLjeg3d1SpTGmPXx6Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c9b77cb74fc98e501ed7c05e4df6110357bdc6737a578bb789cd45a10683407a","last_reissued_at":"2026-07-05T01:09:33.703047Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:09:33.703047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Coevolution of primitive methane cycling ecosystems and early Earth atmosphere and climate","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"q-bio.PE","authors_text":"Antonin Affholder, Benjamin Charnay, Boris Sauterey, R\\'egis Ferri\\`ere, St\\'ephane Mazevet","submitted_at":"2020-06-09T14:02:55Z","abstract_excerpt":"The history of the Earth has been marked by major ecological transitions, driven by metabolic innovation, that radically reshaped the composition of the oceans and atmosphere. The nature and magnitude of the earliest transitions, hundreds of million years before photosynthesis evolved, remain poorly understood. Using a novel ecosystem-planetary model, we find that pre-photosynthetic methane-cycling microbial ecosystems are much less productive than previously thought. In spite of their low productivity, the evolution of methanogenic metabolisms strongly modifies the atmospheric composition, le"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.06433","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/2006.06433/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2006.06433","created_at":"2026-07-05T01:09:33.703116+00:00"},{"alias_kind":"arxiv_version","alias_value":"2006.06433v1","created_at":"2026-07-05T01:09:33.703116+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.06433","created_at":"2026-07-05T01:09:33.703116+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZG3XZN2PZGHF","created_at":"2026-07-05T01:09:33.703116+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZG3XZN2PZGHFAHWX","created_at":"2026-07-05T01:09:33.703116+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZG3XZN2P","created_at":"2026-07-05T01:09:33.703116+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN","json":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN.json","graph_json":"https://pith.science/api/pith-number/ZG3XZN2PZGHFAHWXYBPE35QRAN/graph.json","events_json":"https://pith.science/api/pith-number/ZG3XZN2PZGHFAHWXYBPE35QRAN/events.json","paper":"https://pith.science/paper/ZG3XZN2P"},"agent_actions":{"view_html":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN","download_json":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN.json","view_paper":"https://pith.science/paper/ZG3XZN2P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2006.06433&json=true","fetch_graph":"https://pith.science/api/pith-number/ZG3XZN2PZGHFAHWXYBPE35QRAN/graph.json","fetch_events":"https://pith.science/api/pith-number/ZG3XZN2PZGHFAHWXYBPE35QRAN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN/action/storage_attestation","attest_author":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN/action/author_attestation","sign_citation":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN/action/citation_signature","submit_replication":"https://pith.science/pith/ZG3XZN2PZGHFAHWXYBPE35QRAN/action/replication_record"}},"created_at":"2026-07-05T01:09:33.703116+00:00","updated_at":"2026-07-05T01:09:33.703116+00:00"}