{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:7WJQZW4HOGESED65SZJDKXINDU","short_pith_number":"pith:7WJQZW4H","canonical_record":{"source":{"id":"1403.7556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-03-28T22:18:47Z","cross_cats_sorted":[],"title_canon_sha256":"4f64bce760e2061f8b3fe3d4c08a1106e978ff200529707427738cb81f05288a","abstract_canon_sha256":"9d3437be4d27d733b57ea626b79304a0cb452d170aea0e6b679949fa8632c08f"},"schema_version":"1.0"},"canonical_sha256":"fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388","source":{"kind":"arxiv","id":"1403.7556","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.7556","created_at":"2026-05-18T02:37:51Z"},{"alias_kind":"arxiv_version","alias_value":"1403.7556v1","created_at":"2026-05-18T02:37:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.7556","created_at":"2026-05-18T02:37:51Z"},{"alias_kind":"pith_short_12","alias_value":"7WJQZW4HOGES","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7WJQZW4HOGESED65","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7WJQZW4H","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:7WJQZW4HOGESED65SZJDKXINDU","target":"record","payload":{"canonical_record":{"source":{"id":"1403.7556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-03-28T22:18:47Z","cross_cats_sorted":[],"title_canon_sha256":"4f64bce760e2061f8b3fe3d4c08a1106e978ff200529707427738cb81f05288a","abstract_canon_sha256":"9d3437be4d27d733b57ea626b79304a0cb452d170aea0e6b679949fa8632c08f"},"schema_version":"1.0"},"canonical_sha256":"fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:37:51.856022Z","signature_b64":"pcieEXofk2vnp8BRkbB3wxd1SzTd5v9ZEB9VRDF02DAWH1l9lNXUTxJs5kXo/M+MJAA5ilaCk1jkQMqoTHjkBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388","last_reissued_at":"2026-05-18T02:37:51.855531Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:37:51.855531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.7556","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:37:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8dfUIVRx2GUg4wXngOrQO2rwfnsY+/LfLKZC+XX5sQumz+f2GP0y/1fS/fMotAoKGXmbjeFKlkyDjHk2AoEXBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:30:50.468436Z"},"content_sha256":"b4c87af5e6fa4003c03dd507159083efd80847cfa96d871ea0a6cfc4c4b99b5f","schema_version":"1.0","event_id":"sha256:b4c87af5e6fa4003c03dd507159083efd80847cfa96d871ea0a6cfc4c4b99b5f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:7WJQZW4HOGESED65SZJDKXINDU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometry shapes evolution of early multicellularity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.PE","authors_text":"Ben Kerr, Eric Libby, Michael Travisano, William Ratcliff","submitted_at":"2014-03-28T22:18:47Z","abstract_excerpt":"Organisms have increased in complexity through a series of major evolutionary transitions, in which formerly autonomous entities become parts of a novel higher-level entity. One intriguing feature of the higher-level entity after some major transitions is a division of reproductive labor among its lower-level units. Although it can have clear benefits once established, it is unknown how such reproductive division of labor originates. We consider a recent evolution experiment on the yeast Saccharomyces cerevisiae as a unique platform to address the issue of reproductive differentiation during a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.7556","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":""},"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":"2026-05-18T02:37:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MRJFfZH+3L9Ne81tmi5DXUCz6xPZqKJEY1wZUSDzP+VRDzkDO6oLXUGvb5llyMUmwqdPkJD0BzL0QFZreM0/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T08:30:50.469056Z"},"content_sha256":"262ed03d2dc7e6808e863c79a77a12898137bbea4366f243523bd649a5bc33bf","schema_version":"1.0","event_id":"sha256:262ed03d2dc7e6808e863c79a77a12898137bbea4366f243523bd649a5bc33bf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7WJQZW4HOGESED65SZJDKXINDU/bundle.json","state_url":"https://pith.science/pith/7WJQZW4HOGESED65SZJDKXINDU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7WJQZW4HOGESED65SZJDKXINDU/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":"2026-05-26T08:30:50Z","links":{"resolver":"https://pith.science/pith/7WJQZW4HOGESED65SZJDKXINDU","bundle":"https://pith.science/pith/7WJQZW4HOGESED65SZJDKXINDU/bundle.json","state":"https://pith.science/pith/7WJQZW4HOGESED65SZJDKXINDU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7WJQZW4HOGESED65SZJDKXINDU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:7WJQZW4HOGESED65SZJDKXINDU","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":"9d3437be4d27d733b57ea626b79304a0cb452d170aea0e6b679949fa8632c08f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-03-28T22:18:47Z","title_canon_sha256":"4f64bce760e2061f8b3fe3d4c08a1106e978ff200529707427738cb81f05288a"},"schema_version":"1.0","source":{"id":"1403.7556","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.7556","created_at":"2026-05-18T02:37:51Z"},{"alias_kind":"arxiv_version","alias_value":"1403.7556v1","created_at":"2026-05-18T02:37:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.7556","created_at":"2026-05-18T02:37:51Z"},{"alias_kind":"pith_short_12","alias_value":"7WJQZW4HOGES","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"7WJQZW4HOGESED65","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"7WJQZW4H","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:262ed03d2dc7e6808e863c79a77a12898137bbea4366f243523bd649a5bc33bf","target":"graph","created_at":"2026-05-18T02:37:51Z","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":"Organisms have increased in complexity through a series of major evolutionary transitions, in which formerly autonomous entities become parts of a novel higher-level entity. One intriguing feature of the higher-level entity after some major transitions is a division of reproductive labor among its lower-level units. Although it can have clear benefits once established, it is unknown how such reproductive division of labor originates. We consider a recent evolution experiment on the yeast Saccharomyces cerevisiae as a unique platform to address the issue of reproductive differentiation during a","authors_text":"Ben Kerr, Eric Libby, Michael Travisano, William Ratcliff","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-03-28T22:18:47Z","title":"Geometry shapes evolution of early multicellularity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.7556","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:b4c87af5e6fa4003c03dd507159083efd80847cfa96d871ea0a6cfc4c4b99b5f","target":"record","created_at":"2026-05-18T02:37:51Z","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":"9d3437be4d27d733b57ea626b79304a0cb452d170aea0e6b679949fa8632c08f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2014-03-28T22:18:47Z","title_canon_sha256":"4f64bce760e2061f8b3fe3d4c08a1106e978ff200529707427738cb81f05288a"},"schema_version":"1.0","source":{"id":"1403.7556","kind":"arxiv","version":1}},"canonical_sha256":"fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd930cdb877189220fdd9652355d0d1d108ae8cb570c8e7735ff7b1f5a217388","first_computed_at":"2026-05-18T02:37:51.855531Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:37:51.855531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pcieEXofk2vnp8BRkbB3wxd1SzTd5v9ZEB9VRDF02DAWH1l9lNXUTxJs5kXo/M+MJAA5ilaCk1jkQMqoTHjkBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:37:51.856022Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.7556","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4c87af5e6fa4003c03dd507159083efd80847cfa96d871ea0a6cfc4c4b99b5f","sha256:262ed03d2dc7e6808e863c79a77a12898137bbea4366f243523bd649a5bc33bf"],"state_sha256":"6ff23fc74fa7ecc0b85b74fb079175063647d3a3fff4fc2b185d016ba7dbec8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WdlRpJq9qmWEBbNezeAZ9azR4Bng0oqe9ZGq1ns8Rz2yzsptBzSneE6LzgB6hb9N6YJE128eTKxtZxk/811BDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T08:30:50.472656Z","bundle_sha256":"6b17e57059250b7bfce7ff313f252ed91263661dbfc4c747b2936d481c049434"}}