{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:J7NLBGDKBHZKEYLKCT6L64QERH","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":"46e846324d1f544b8bb5d1919b6e5b83fc046993aa6e0a114b9558708561a57d","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-02-10T16:28:19Z","title_canon_sha256":"cb8b197e62882497e1836bccb0f491a7b9bbd5897a7a63a0a58aba8258cc3df0"},"schema_version":"1.0","source":{"id":"1802.03615","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.03615","created_at":"2026-05-18T00:15:16Z"},{"alias_kind":"arxiv_version","alias_value":"1802.03615v1","created_at":"2026-05-18T00:15:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.03615","created_at":"2026-05-18T00:15:16Z"},{"alias_kind":"pith_short_12","alias_value":"J7NLBGDKBHZK","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"J7NLBGDKBHZKEYLK","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"J7NLBGDK","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:92cf71774bec18425c157666795a46744f1cf30a8f2d243aef7fcdde8ebfaaac","target":"graph","created_at":"2026-05-18T00:15:16Z","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 evolutionary transition to multicellularity transformed life on earth, allowing for the evolution of large, complex organisms. While multicellularity can be strongly advantageous, its earliest stages bring unique physical challenges. Nascent multicellular organisms must contend with a novel constraint: intercellular stresses arising from cell-cell interactions that can limit multicellular size. Among the possible evolutionary routes to overcoming this size limit, two appear obvious: multicellular organisms can increase intercellular bond strength, allowing them to tolerate larger stresses,","authors_text":"Colin G. Brandys, Elyes C. Graba, Peter J. Yunker, Shane Jacobeen, T. Cooper Day, William C. Ratcliff","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-02-10T16:28:19Z","title":"Geometry, packing, and evolutionary paths to increased multicellular size"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.03615","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":"sha256:0fa8c62d61c0eb91e4d11addcc3d1fa7393c9997f9a8bbf9672b089b75cc28cb","target":"record","created_at":"2026-05-18T00:15:16Z","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":"46e846324d1f544b8bb5d1919b6e5b83fc046993aa6e0a114b9558708561a57d","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-02-10T16:28:19Z","title_canon_sha256":"cb8b197e62882497e1836bccb0f491a7b9bbd5897a7a63a0a58aba8258cc3df0"},"schema_version":"1.0","source":{"id":"1802.03615","kind":"arxiv","version":1}},"canonical_sha256":"4fdab0986a09f2a2616a14fcbf720489e33c63fb711b0d249090de0789ca26a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4fdab0986a09f2a2616a14fcbf720489e33c63fb711b0d249090de0789ca26a2","first_computed_at":"2026-05-18T00:15:16.214485Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:16.214485Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qQ82MoPR3m2yyEdCaNU5ZfUdWK5DJk7rQVFrxk70If25L2EuLoZclNd7j3ZYB06Qr2zfmkaNEp94kU/5K9TXDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:16.215169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.03615","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0fa8c62d61c0eb91e4d11addcc3d1fa7393c9997f9a8bbf9672b089b75cc28cb","sha256:92cf71774bec18425c157666795a46744f1cf30a8f2d243aef7fcdde8ebfaaac"],"state_sha256":"44e513a6de34d4ea67a800a57f8ae3bb3d90ec10ea81701685d2f74bcb25fb5e"}