{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:K7VUGWGB3M6UFKLFXW2XNQKMWJ","short_pith_number":"pith:K7VUGWGB","canonical_record":{"source":{"id":"1705.02136","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-05T09:01:59Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"7ed50ab2ecf25edb2460e0c0d95f78bb56fe69dbb431edf6d0440b09feb2898b","abstract_canon_sha256":"965e20450a5436a2589825edbb58a733d6bd6f567324f495c4c954e9c02e837c"},"schema_version":"1.0"},"canonical_sha256":"57eb4358c1db3d42a965bdb576c14cb256d547389e03cc157e71a6374d3d1a96","source":{"kind":"arxiv","id":"1705.02136","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02136","created_at":"2026-05-18T00:36:19Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02136v3","created_at":"2026-05-18T00:36:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02136","created_at":"2026-05-18T00:36:19Z"},{"alias_kind":"pith_short_12","alias_value":"K7VUGWGB3M6U","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K7VUGWGB3M6UFKLF","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K7VUGWGB","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:K7VUGWGB3M6UFKLFXW2XNQKMWJ","target":"record","payload":{"canonical_record":{"source":{"id":"1705.02136","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-05T09:01:59Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"7ed50ab2ecf25edb2460e0c0d95f78bb56fe69dbb431edf6d0440b09feb2898b","abstract_canon_sha256":"965e20450a5436a2589825edbb58a733d6bd6f567324f495c4c954e9c02e837c"},"schema_version":"1.0"},"canonical_sha256":"57eb4358c1db3d42a965bdb576c14cb256d547389e03cc157e71a6374d3d1a96","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:36:19.240812Z","signature_b64":"9OiAhCw5MpS/V8icgVe7mpxUzQpTzp+nXf2Dzt/uHJ1a/VZuEly7LZHuSqU6TZww5JIZY3vRSKPYLgogpl53CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57eb4358c1db3d42a965bdb576c14cb256d547389e03cc157e71a6374d3d1a96","last_reissued_at":"2026-05-18T00:36:19.240129Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:36:19.240129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.02136","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:36:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z4tDipciogBP0fHxIVFMREygaoVjftHkIq0yzKwpMAiw6cUfnzR0iYZI3gQfOS0+AihMCyqa1y+IKJASgN5EAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T18:25:04.277800Z"},"content_sha256":"19a17af4fe776bb3e079943449a0f4f1b573d7a083f0fff9dbb3337e008c75a5","schema_version":"1.0","event_id":"sha256:19a17af4fe776bb3e079943449a0f4f1b573d7a083f0fff9dbb3337e008c75a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:K7VUGWGB3M6UFKLFXW2XNQKMWJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometry-driven collective ordering of bacterial vortices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"cond-mat.soft","authors_text":"Jun Gohya, Kanta Eto, Kazusa Beppu, Masatoshi Ichikawa, Yusuke T. Maeda, Ziane Izri","submitted_at":"2017-05-05T09:01:59Z","abstract_excerpt":"Controlling the phases of matter is a challenge that spans from condensed materials to biological systems. Here, by imposing a geometric boundary condition, we study controlled collective motion of Escherichia coli bacteria. A circular microwell isolates a rectified vortex from disordered vortices masked in bulk. For a doublet of microwells, two vortices emerge but their spinning directions show transition from parallel to anti-parallel. A Vicsek-like model for confined self-propelled particles gives the point where two spinning patterns occur in equal probability and one geometric quantity go"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02136","kind":"arxiv","version":3},"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":"2026-05-18T00:36:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xOlHS6jSA+5yAlOI0mvBi2//204d+UxMS36L4izkoahfAVibN2OJAHqx1JXTKhG0F8Dsn6SAS894nReZmg9zAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-25T18:25:04.278152Z"},"content_sha256":"44f9e4f59997ad2bfa11d8c96c5748fb44cf7af2dcac2038a465f347a5673b24","schema_version":"1.0","event_id":"sha256:44f9e4f59997ad2bfa11d8c96c5748fb44cf7af2dcac2038a465f347a5673b24"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ/bundle.json","state_url":"https://pith.science/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ/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":"2026-06-25T18:25:04Z","links":{"resolver":"https://pith.science/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ","bundle":"https://pith.science/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ/bundle.json","state":"https://pith.science/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K7VUGWGB3M6UFKLFXW2XNQKMWJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:K7VUGWGB3M6UFKLFXW2XNQKMWJ","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":"965e20450a5436a2589825edbb58a733d6bd6f567324f495c4c954e9c02e837c","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-05T09:01:59Z","title_canon_sha256":"7ed50ab2ecf25edb2460e0c0d95f78bb56fe69dbb431edf6d0440b09feb2898b"},"schema_version":"1.0","source":{"id":"1705.02136","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.02136","created_at":"2026-05-18T00:36:19Z"},{"alias_kind":"arxiv_version","alias_value":"1705.02136v3","created_at":"2026-05-18T00:36:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.02136","created_at":"2026-05-18T00:36:19Z"},{"alias_kind":"pith_short_12","alias_value":"K7VUGWGB3M6U","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K7VUGWGB3M6UFKLF","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K7VUGWGB","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:44f9e4f59997ad2bfa11d8c96c5748fb44cf7af2dcac2038a465f347a5673b24","target":"graph","created_at":"2026-05-18T00:36:19Z","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":"Controlling the phases of matter is a challenge that spans from condensed materials to biological systems. Here, by imposing a geometric boundary condition, we study controlled collective motion of Escherichia coli bacteria. A circular microwell isolates a rectified vortex from disordered vortices masked in bulk. For a doublet of microwells, two vortices emerge but their spinning directions show transition from parallel to anti-parallel. A Vicsek-like model for confined self-propelled particles gives the point where two spinning patterns occur in equal probability and one geometric quantity go","authors_text":"Jun Gohya, Kanta Eto, Kazusa Beppu, Masatoshi Ichikawa, Yusuke T. Maeda, Ziane Izri","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-05T09:01:59Z","title":"Geometry-driven collective ordering of bacterial vortices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.02136","kind":"arxiv","version":3},"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":"sha256:19a17af4fe776bb3e079943449a0f4f1b573d7a083f0fff9dbb3337e008c75a5","target":"record","created_at":"2026-05-18T00:36:19Z","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":"965e20450a5436a2589825edbb58a733d6bd6f567324f495c4c954e9c02e837c","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-05-05T09:01:59Z","title_canon_sha256":"7ed50ab2ecf25edb2460e0c0d95f78bb56fe69dbb431edf6d0440b09feb2898b"},"schema_version":"1.0","source":{"id":"1705.02136","kind":"arxiv","version":3}},"canonical_sha256":"57eb4358c1db3d42a965bdb576c14cb256d547389e03cc157e71a6374d3d1a96","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"57eb4358c1db3d42a965bdb576c14cb256d547389e03cc157e71a6374d3d1a96","first_computed_at":"2026-05-18T00:36:19.240129Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:19.240129Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9OiAhCw5MpS/V8icgVe7mpxUzQpTzp+nXf2Dzt/uHJ1a/VZuEly7LZHuSqU6TZww5JIZY3vRSKPYLgogpl53CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:19.240812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.02136","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19a17af4fe776bb3e079943449a0f4f1b573d7a083f0fff9dbb3337e008c75a5","sha256:44f9e4f59997ad2bfa11d8c96c5748fb44cf7af2dcac2038a465f347a5673b24"],"state_sha256":"23b883ee13d16d8af73cdccf8303d944323183211398cf345b37272a4347d73d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GmsxgkSm63pFeEF6VS5vfhUiVpc+ScxADw7IwJxXRwmgICe7h5azJBgxPWl/cATkE5Ef72NVQ54VjjuGHjNJAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-25T18:25:04.280218Z","bundle_sha256":"7273fa1916339e819e40aed9e7c942369a3377e6979025b69d062b9bc384b83e"}}