{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2TXSIBYIG7SY4UEI5S3CJHF5F4","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":"b422423e7b7bad422055bb74d7ea5138de5b58bc63346700a388b6de6da50267","cross_cats_sorted":["q-bio.PE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.GN","submitted_at":"2015-01-15T19:21:50Z","title_canon_sha256":"bed0257cc5d95ced7e5f40c41e36644f5a2f47d0456746b689fd73487d620d70"},"schema_version":"1.0","source":{"id":"1501.03782","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.03782","created_at":"2026-05-18T02:25:26Z"},{"alias_kind":"arxiv_version","alias_value":"1501.03782v2","created_at":"2026-05-18T02:25:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.03782","created_at":"2026-05-18T02:25:26Z"},{"alias_kind":"pith_short_12","alias_value":"2TXSIBYIG7SY","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"2TXSIBYIG7SY4UEI","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"2TXSIBYI","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:bd3486e1ea64af7040654d3c51788589d6950793783e1dff916feaa513a7b5ae","target":"graph","created_at":"2026-05-18T02:25:26Z","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":"Salamanders (urodela) have among the largest vertebrate genomes, ranging in size from 10 to over 80 pg. The urodela are divided into ten extant families each with a characteristic range in genome size. Although changes in genome size often occur randomly and in the absence of selection pressure, non-random patterns of genome size variation are evident among specific vertebrate lineages. Here we report that genome size in salamander families varies inversely with species richness and other ecological factors: clades that began radiating earlier (older crown age) tend to have smaller genomes, hi","authors_text":"Bianca Sclavi, John Herrick","cross_cats":["q-bio.PE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.GN","submitted_at":"2015-01-15T19:21:50Z","title":"Ecological patterns of genome size variation and the origin of species in salamanders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.03782","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":"sha256:30fc79285506da167ddc161661e1f821bfbaceb853d0674ece9ffa6e6a26ee15","target":"record","created_at":"2026-05-18T02:25:26Z","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":"b422423e7b7bad422055bb74d7ea5138de5b58bc63346700a388b6de6da50267","cross_cats_sorted":["q-bio.PE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.GN","submitted_at":"2015-01-15T19:21:50Z","title_canon_sha256":"bed0257cc5d95ced7e5f40c41e36644f5a2f47d0456746b689fd73487d620d70"},"schema_version":"1.0","source":{"id":"1501.03782","kind":"arxiv","version":2}},"canonical_sha256":"d4ef24070837e58e5088ecb6249cbd2f15a25adfa71012d7f0c13a95d159049c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4ef24070837e58e5088ecb6249cbd2f15a25adfa71012d7f0c13a95d159049c","first_computed_at":"2026-05-18T02:25:26.075582Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:26.075582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HDed0BBbZvvr9936t6YSASXcBwZz4o1fWs+6b4QEEHSVFerNXiXyhkNx8ndLNJiY364BpnN7m5iAi89A1x9+BA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:26.076001Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.03782","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30fc79285506da167ddc161661e1f821bfbaceb853d0674ece9ffa6e6a26ee15","sha256:bd3486e1ea64af7040654d3c51788589d6950793783e1dff916feaa513a7b5ae"],"state_sha256":"c72e1c359ffeb99e3b7bea2b815c0ec3dbd83d13ad7ef0ac7410f41ab7edb4dd"}