{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:JBQND6YZNYXCLYEKIRPXBIT2U5","short_pith_number":"pith:JBQND6YZ","canonical_record":{"source":{"id":"2502.06312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-10T10:01:48Z","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"title_canon_sha256":"4e56595b9660673a4c72ca7c9e55dce0e83dc5f29061ea3b3cd6ba35a568a3d2","abstract_canon_sha256":"bccddd3cb0363a8c3bdf8fed3b3d2d185eec5533d8e5d3e2e569dac1588f8e9e"},"schema_version":"1.0"},"canonical_sha256":"4860d1fb196e2e25e08a445f70a27aa77246fcc552df3815143de03eaafb80d2","source":{"kind":"arxiv","id":"2502.06312","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.06312","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"arxiv_version","alias_value":"2502.06312v1","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.06312","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"pith_short_12","alias_value":"JBQND6YZNYXC","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"pith_short_16","alias_value":"JBQND6YZNYXCLYEK","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"pith_short_8","alias_value":"JBQND6YZ","created_at":"2026-07-05T10:12:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:JBQND6YZNYXCLYEKIRPXBIT2U5","target":"record","payload":{"canonical_record":{"source":{"id":"2502.06312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-10T10:01:48Z","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"title_canon_sha256":"4e56595b9660673a4c72ca7c9e55dce0e83dc5f29061ea3b3cd6ba35a568a3d2","abstract_canon_sha256":"bccddd3cb0363a8c3bdf8fed3b3d2d185eec5533d8e5d3e2e569dac1588f8e9e"},"schema_version":"1.0"},"canonical_sha256":"4860d1fb196e2e25e08a445f70a27aa77246fcc552df3815143de03eaafb80d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:12:04.402309Z","signature_b64":"dEk90l7YWU0dTZfmvBaf+bo9WgshZDpMp0bhDHF3KRwNWQZ5RSC0G1n5fXGZ12s0rAisNPo75ihuNc5D+ZgvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4860d1fb196e2e25e08a445f70a27aa77246fcc552df3815143de03eaafb80d2","last_reissued_at":"2026-07-05T10:12:04.401828Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:12:04.401828Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.06312","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":"2026-07-05T10:12:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q/OHn2M6EC+WyuouU6ISVhP7RUiQY9NQ7K7p5VqnsvtVcsJ1DlAFhjrXt507aKHNtP/+hW74j6eXAuTNTwnvAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T10:47:55.380360Z"},"content_sha256":"f6bb135a478478f263022f3bb81333ddd2115a25c92a6dbf2e6b41234eb9cc69","schema_version":"1.0","event_id":"sha256:f6bb135a478478f263022f3bb81333ddd2115a25c92a6dbf2e6b41234eb9cc69"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:JBQND6YZNYXCLYEKIRPXBIT2U5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Oscillatory collective motion in viscoelastic and elastic active fluids and solids under circular confinement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph","physics.flu-dyn"],"primary_cat":"cond-mat.soft","authors_text":"Andreas M. Menzel, Henning Reinken","submitted_at":"2025-02-10T10:01:48Z","abstract_excerpt":"In an inspiring recent study, Xu et al. [Nat. Phys. 19, 46 (2023)] observed for a living active biofilm under circular confinement two emergent dynamic modes of collective motion in the film. One corresponds to global rotational motion of oscillating sense of rotation, the other one to uniformly translating motion of rotating migration direction. The authors reproduced these features in a discretized theoretical model for elastic active solids. We here demonstrate that the discovered fundamental phenomena are generic and emerge abundantly for a broad range of viscoelastic fluids and solids. El"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.06312","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.06312/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":"2026-07-05T10:12:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/P7g6w/ZiqPPuXUfgzCyqNXQxb5wLL1t5Ov8GexeZ9JoD6yMVNj5BQLlg0JrS7gw1b/ZIIiyF39JSiyLsgXQAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T10:47:55.380973Z"},"content_sha256":"348d583ebefd6de2995a29ae8f136f8472e01e09a303175a6aff161b9c86bade","schema_version":"1.0","event_id":"sha256:348d583ebefd6de2995a29ae8f136f8472e01e09a303175a6aff161b9c86bade"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JBQND6YZNYXCLYEKIRPXBIT2U5/bundle.json","state_url":"https://pith.science/pith/JBQND6YZNYXCLYEKIRPXBIT2U5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JBQND6YZNYXCLYEKIRPXBIT2U5/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":"2026-08-23T10:47:55Z","links":{"resolver":"https://pith.science/pith/JBQND6YZNYXCLYEKIRPXBIT2U5","bundle":"https://pith.science/pith/JBQND6YZNYXCLYEKIRPXBIT2U5/bundle.json","state":"https://pith.science/pith/JBQND6YZNYXCLYEKIRPXBIT2U5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JBQND6YZNYXCLYEKIRPXBIT2U5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:JBQND6YZNYXCLYEKIRPXBIT2U5","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":"bccddd3cb0363a8c3bdf8fed3b3d2d185eec5533d8e5d3e2e569dac1588f8e9e","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-10T10:01:48Z","title_canon_sha256":"4e56595b9660673a4c72ca7c9e55dce0e83dc5f29061ea3b3cd6ba35a568a3d2"},"schema_version":"1.0","source":{"id":"2502.06312","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.06312","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"arxiv_version","alias_value":"2502.06312v1","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.06312","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"pith_short_12","alias_value":"JBQND6YZNYXC","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"pith_short_16","alias_value":"JBQND6YZNYXCLYEK","created_at":"2026-07-05T10:12:04Z"},{"alias_kind":"pith_short_8","alias_value":"JBQND6YZ","created_at":"2026-07-05T10:12:04Z"}],"graph_snapshots":[{"event_id":"sha256:348d583ebefd6de2995a29ae8f136f8472e01e09a303175a6aff161b9c86bade","target":"graph","created_at":"2026-07-05T10:12:04Z","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/2502.06312/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In an inspiring recent study, Xu et al. [Nat. Phys. 19, 46 (2023)] observed for a living active biofilm under circular confinement two emergent dynamic modes of collective motion in the film. One corresponds to global rotational motion of oscillating sense of rotation, the other one to uniformly translating motion of rotating migration direction. The authors reproduced these features in a discretized theoretical model for elastic active solids. We here demonstrate that the discovered fundamental phenomena are generic and emerge abundantly for a broad range of viscoelastic fluids and solids. El","authors_text":"Andreas M. Menzel, Henning Reinken","cross_cats":["physics.bio-ph","physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-10T10:01:48Z","title":"Oscillatory collective motion in viscoelastic and elastic active fluids and solids under circular confinement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.06312","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:f6bb135a478478f263022f3bb81333ddd2115a25c92a6dbf2e6b41234eb9cc69","target":"record","created_at":"2026-07-05T10:12:04Z","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":"bccddd3cb0363a8c3bdf8fed3b3d2d185eec5533d8e5d3e2e569dac1588f8e9e","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-02-10T10:01:48Z","title_canon_sha256":"4e56595b9660673a4c72ca7c9e55dce0e83dc5f29061ea3b3cd6ba35a568a3d2"},"schema_version":"1.0","source":{"id":"2502.06312","kind":"arxiv","version":1}},"canonical_sha256":"4860d1fb196e2e25e08a445f70a27aa77246fcc552df3815143de03eaafb80d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4860d1fb196e2e25e08a445f70a27aa77246fcc552df3815143de03eaafb80d2","first_computed_at":"2026-07-05T10:12:04.401828Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:12:04.401828Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dEk90l7YWU0dTZfmvBaf+bo9WgshZDpMp0bhDHF3KRwNWQZ5RSC0G1n5fXGZ12s0rAisNPo75ihuNc5D+ZgvBw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:12:04.402309Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.06312","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f6bb135a478478f263022f3bb81333ddd2115a25c92a6dbf2e6b41234eb9cc69","sha256:348d583ebefd6de2995a29ae8f136f8472e01e09a303175a6aff161b9c86bade"],"state_sha256":"b9ca50e1cb9e489ef2fd774be4de695d0ff7d7842c17594dcc423e1db5608989"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qlPcl13+zXGOl7f9FuHrBlQvDAxjJdme6gOsE+HfWKI+h+UCAI+A9nzPupcuUMHk/VWhgpJ1tELM6bhfvvC4CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T10:47:55.385980Z","bundle_sha256":"03b133663afe05b3760568aab652627e0cb1f5359f8020786016857281b0213d"}}