{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:3ATZRJNQAW65KHRXGNGW4AL33H","short_pith_number":"pith:3ATZRJNQ","canonical_record":{"source":{"id":"1901.04763","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-01-15T11:00:03Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"01ce6ab323510ec4b234f4401c9d19cf52e6b032124fe110baa45c89200dfdef","abstract_canon_sha256":"b9efd104b07d1b3143f5e79469e2630abf38840c17631ef74e515500acdfd5a1"},"schema_version":"1.0"},"canonical_sha256":"d82798a5b005bdd51e37334d6e017bd9e414985206c02388d9ffb902c49bcf94","source":{"kind":"arxiv","id":"1901.04763","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04763","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04763v2","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04763","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"pith_short_12","alias_value":"3ATZRJNQAW65","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"pith_short_16","alias_value":"3ATZRJNQAW65KHRX","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"pith_short_8","alias_value":"3ATZRJNQ","created_at":"2026-07-05T00:57:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:3ATZRJNQAW65KHRXGNGW4AL33H","target":"record","payload":{"canonical_record":{"source":{"id":"1901.04763","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-01-15T11:00:03Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"01ce6ab323510ec4b234f4401c9d19cf52e6b032124fe110baa45c89200dfdef","abstract_canon_sha256":"b9efd104b07d1b3143f5e79469e2630abf38840c17631ef74e515500acdfd5a1"},"schema_version":"1.0"},"canonical_sha256":"d82798a5b005bdd51e37334d6e017bd9e414985206c02388d9ffb902c49bcf94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:57:03.790528Z","signature_b64":"TEk34l+AcHCF09qVUlPE8BuKs6tz+/c+wnZPVHeZow4AJR/CMRDCtU81WfBMUv3/jqRgfLHqSAqRsLmEWhVlCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d82798a5b005bdd51e37334d6e017bd9e414985206c02388d9ffb902c49bcf94","last_reissued_at":"2026-07-05T00:57:03.790041Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:57:03.790041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.04763","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:57:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fbQgRuNFzRfDDLX0wNmM33dBA1JdK1QsZGBrVD03y4HO9IA9HBVSgfQoPyrccqY7qEJJCtbEGJxdD6q+fzFBBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T12:56:11.144714Z"},"content_sha256":"264ed05c094a353469ea67faf89a252141609818d09cfe2f00996f45a0e62d10","schema_version":"1.0","event_id":"sha256:264ed05c094a353469ea67faf89a252141609818d09cfe2f00996f45a0e62d10"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:3ATZRJNQAW65KHRXGNGW4AL33H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dense active matter model of motion patterns in confluent cell monolayers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Eric Bertin, J. Martin Collinson, Kaja Kostanjevec, Rastko Sknepnek, Silke Henkes","submitted_at":"2019-01-15T11:00:03Z","abstract_excerpt":"Epithelial cell monolayers show remarkable displacement and velocity correlations over distances of ten or more cell sizes that are reminiscent of supercooled liquids and active nematics. We show that many observed features can be described within the framework of dense active matter, and argue that persistent uncoordinated cell motility coupled to the collective elastic modes of the cell sheet is sufficient to produce swirl-like correlations. We obtain this result using both continuum active linear elasticity and a normal modes formalism, and validate analytical predictions with numerical sim"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04763","kind":"arxiv","version":2},"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/1901.04763/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:57:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sFLO0/at5uk/xma2fdQK81JggUcvOO4+IDI6lDuMArBn1OcFlAFWFoVq8JdqqI9HpvJY4qwJKgaw4iYOyJYuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T12:56:11.145206Z"},"content_sha256":"d526709b24988a7cb14cff00e05829ec15cb148885bdfc9ee73f01d4127d95b5","schema_version":"1.0","event_id":"sha256:d526709b24988a7cb14cff00e05829ec15cb148885bdfc9ee73f01d4127d95b5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ATZRJNQAW65KHRXGNGW4AL33H/bundle.json","state_url":"https://pith.science/pith/3ATZRJNQAW65KHRXGNGW4AL33H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ATZRJNQAW65KHRXGNGW4AL33H/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":"2026-08-08T12:56:11Z","links":{"resolver":"https://pith.science/pith/3ATZRJNQAW65KHRXGNGW4AL33H","bundle":"https://pith.science/pith/3ATZRJNQAW65KHRXGNGW4AL33H/bundle.json","state":"https://pith.science/pith/3ATZRJNQAW65KHRXGNGW4AL33H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ATZRJNQAW65KHRXGNGW4AL33H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3ATZRJNQAW65KHRXGNGW4AL33H","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":"b9efd104b07d1b3143f5e79469e2630abf38840c17631ef74e515500acdfd5a1","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-01-15T11:00:03Z","title_canon_sha256":"01ce6ab323510ec4b234f4401c9d19cf52e6b032124fe110baa45c89200dfdef"},"schema_version":"1.0","source":{"id":"1901.04763","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.04763","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"arxiv_version","alias_value":"1901.04763v2","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.04763","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"pith_short_12","alias_value":"3ATZRJNQAW65","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"pith_short_16","alias_value":"3ATZRJNQAW65KHRX","created_at":"2026-07-05T00:57:03Z"},{"alias_kind":"pith_short_8","alias_value":"3ATZRJNQ","created_at":"2026-07-05T00:57:03Z"}],"graph_snapshots":[{"event_id":"sha256:d526709b24988a7cb14cff00e05829ec15cb148885bdfc9ee73f01d4127d95b5","target":"graph","created_at":"2026-07-05T00:57:03Z","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/1901.04763/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Epithelial cell monolayers show remarkable displacement and velocity correlations over distances of ten or more cell sizes that are reminiscent of supercooled liquids and active nematics. We show that many observed features can be described within the framework of dense active matter, and argue that persistent uncoordinated cell motility coupled to the collective elastic modes of the cell sheet is sufficient to produce swirl-like correlations. We obtain this result using both continuum active linear elasticity and a normal modes formalism, and validate analytical predictions with numerical sim","authors_text":"Eric Bertin, J. Martin Collinson, Kaja Kostanjevec, Rastko Sknepnek, Silke Henkes","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-01-15T11:00:03Z","title":"Dense active matter model of motion patterns in confluent cell monolayers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.04763","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":"sha256:264ed05c094a353469ea67faf89a252141609818d09cfe2f00996f45a0e62d10","target":"record","created_at":"2026-07-05T00:57:03Z","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":"b9efd104b07d1b3143f5e79469e2630abf38840c17631ef74e515500acdfd5a1","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2019-01-15T11:00:03Z","title_canon_sha256":"01ce6ab323510ec4b234f4401c9d19cf52e6b032124fe110baa45c89200dfdef"},"schema_version":"1.0","source":{"id":"1901.04763","kind":"arxiv","version":2}},"canonical_sha256":"d82798a5b005bdd51e37334d6e017bd9e414985206c02388d9ffb902c49bcf94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d82798a5b005bdd51e37334d6e017bd9e414985206c02388d9ffb902c49bcf94","first_computed_at":"2026-07-05T00:57:03.790041Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:57:03.790041Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TEk34l+AcHCF09qVUlPE8BuKs6tz+/c+wnZPVHeZow4AJR/CMRDCtU81WfBMUv3/jqRgfLHqSAqRsLmEWhVlCw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:57:03.790528Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.04763","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:264ed05c094a353469ea67faf89a252141609818d09cfe2f00996f45a0e62d10","sha256:d526709b24988a7cb14cff00e05829ec15cb148885bdfc9ee73f01d4127d95b5"],"state_sha256":"75d470fd4621fa6f876cf2071c25cbaacb4f93809a1ef977a334b099f65286f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pz+hDHtkoy1IPMb+oeEk7vwXz1P93WkTC1WNrcLsci/7TvWkJ6BIWcST4jpHRtRApFeGrGisUstNT+A+yepMAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T12:56:11.148682Z","bundle_sha256":"4651d2876641affd0a4a31564ef96dd5ddddaa14f6fc2b82dd3c152beb5c5e1c"}}