{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OB4XM3WIUD256GMR6YQQH4QJIC","short_pith_number":"pith:OB4XM3WI","canonical_record":{"source":{"id":"1310.3212","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-11T17:32:17Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"46e7675ce11f9930252c78c9634f5502eb1694f8b29b76c257d8865c86d6c503","abstract_canon_sha256":"273c444aa51de9419c1f9c79a375e0f1dc80d28bc7b56a75ded763ae1db99032"},"schema_version":"1.0"},"canonical_sha256":"7079766ec8a0f5df1991f62103f20940b0d82adedf28356dd82f4feddcb50477","source":{"kind":"arxiv","id":"1310.3212","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.3212","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"1310.3212v2","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.3212","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"OB4XM3WIUD25","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OB4XM3WIUD256GMR","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OB4XM3WI","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OB4XM3WIUD256GMR6YQQH4QJIC","target":"record","payload":{"canonical_record":{"source":{"id":"1310.3212","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-11T17:32:17Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"46e7675ce11f9930252c78c9634f5502eb1694f8b29b76c257d8865c86d6c503","abstract_canon_sha256":"273c444aa51de9419c1f9c79a375e0f1dc80d28bc7b56a75ded763ae1db99032"},"schema_version":"1.0"},"canonical_sha256":"7079766ec8a0f5df1991f62103f20940b0d82adedf28356dd82f4feddcb50477","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:07:42.097472Z","signature_b64":"3BR2dKlkBWbo6HBRoM2asl5XsVZJrun6TssMiBmDq27DDbJFbROIDOjD0Sp/SiDTKGkLRVccY8wPiBeNJZC+CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7079766ec8a0f5df1991f62103f20940b0d82adedf28356dd82f4feddcb50477","last_reissued_at":"2026-05-18T03:07:42.096605Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:07:42.096605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.3212","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":"2026-05-18T03:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HTF6IMUR/Jd8KnvHWdO3nO08bVuhKN2VMj/IKlR2POg7gjY8Id/rrJItEHEPJpKJpJh+EvGLm63OS7zA9jiPDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:47:53.644385Z"},"content_sha256":"a01acbb3ea6f829dd8c4c4f8179abd1f29a05f1938f48e6f3b65885247381b31","schema_version":"1.0","event_id":"sha256:a01acbb3ea6f829dd8c4c4f8179abd1f29a05f1938f48e6f3b65885247381b31"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OB4XM3WIUD256GMR6YQQH4QJIC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Self-assembling paramagnetic colloids in oscillating magnetic fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"physics.flu-dyn","authors_text":"Alison E. Koser, Nathan C. Keim, Paulo E. Arratia","submitted_at":"2013-10-11T17:32:17Z","abstract_excerpt":"Many fascinating phenomena such as large-scale collective flows, enhanced fluid mixing and pattern formation have been observed in so-called active fluids, which are composed of particles that can absorb energy and dissipate it into the fluid medium. In order to investigate the role of hydrodynamic interactions in the collective behavior of an active fluid, we choose a model system: paramagnetic particles submerged in water and activated by an oscillating magnetic field. The magnetic field induces magnetic attractions among the paramagnetic particles, activating the particles, and injecting en"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.3212","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":""},"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":"2026-05-18T03:07:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h4mQUeCqi7wXZJSKoMxWSORAyVKjjT2jlS67OP8bUyLDQIc1gSWjxI+DdE9OaboqdzH5bZ36jA4G5NVFgNsnBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T02:47:53.645015Z"},"content_sha256":"6e6c524dbd7cf778e466d08184eb5178ebc931857f31d7f7f8dd7944b14a5711","schema_version":"1.0","event_id":"sha256:6e6c524dbd7cf778e466d08184eb5178ebc931857f31d7f7f8dd7944b14a5711"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OB4XM3WIUD256GMR6YQQH4QJIC/bundle.json","state_url":"https://pith.science/pith/OB4XM3WIUD256GMR6YQQH4QJIC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OB4XM3WIUD256GMR6YQQH4QJIC/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":"2026-05-31T02:47:53Z","links":{"resolver":"https://pith.science/pith/OB4XM3WIUD256GMR6YQQH4QJIC","bundle":"https://pith.science/pith/OB4XM3WIUD256GMR6YQQH4QJIC/bundle.json","state":"https://pith.science/pith/OB4XM3WIUD256GMR6YQQH4QJIC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OB4XM3WIUD256GMR6YQQH4QJIC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OB4XM3WIUD256GMR6YQQH4QJIC","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":"273c444aa51de9419c1f9c79a375e0f1dc80d28bc7b56a75ded763ae1db99032","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-11T17:32:17Z","title_canon_sha256":"46e7675ce11f9930252c78c9634f5502eb1694f8b29b76c257d8865c86d6c503"},"schema_version":"1.0","source":{"id":"1310.3212","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.3212","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"arxiv_version","alias_value":"1310.3212v2","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.3212","created_at":"2026-05-18T03:07:42Z"},{"alias_kind":"pith_short_12","alias_value":"OB4XM3WIUD25","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OB4XM3WIUD256GMR","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OB4XM3WI","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:6e6c524dbd7cf778e466d08184eb5178ebc931857f31d7f7f8dd7944b14a5711","target":"graph","created_at":"2026-05-18T03:07:42Z","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":"Many fascinating phenomena such as large-scale collective flows, enhanced fluid mixing and pattern formation have been observed in so-called active fluids, which are composed of particles that can absorb energy and dissipate it into the fluid medium. In order to investigate the role of hydrodynamic interactions in the collective behavior of an active fluid, we choose a model system: paramagnetic particles submerged in water and activated by an oscillating magnetic field. The magnetic field induces magnetic attractions among the paramagnetic particles, activating the particles, and injecting en","authors_text":"Alison E. Koser, Nathan C. Keim, Paulo E. Arratia","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-11T17:32:17Z","title":"Self-assembling paramagnetic colloids in oscillating magnetic fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.3212","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:a01acbb3ea6f829dd8c4c4f8179abd1f29a05f1938f48e6f3b65885247381b31","target":"record","created_at":"2026-05-18T03:07:42Z","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":"273c444aa51de9419c1f9c79a375e0f1dc80d28bc7b56a75ded763ae1db99032","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2013-10-11T17:32:17Z","title_canon_sha256":"46e7675ce11f9930252c78c9634f5502eb1694f8b29b76c257d8865c86d6c503"},"schema_version":"1.0","source":{"id":"1310.3212","kind":"arxiv","version":2}},"canonical_sha256":"7079766ec8a0f5df1991f62103f20940b0d82adedf28356dd82f4feddcb50477","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7079766ec8a0f5df1991f62103f20940b0d82adedf28356dd82f4feddcb50477","first_computed_at":"2026-05-18T03:07:42.096605Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:07:42.096605Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3BR2dKlkBWbo6HBRoM2asl5XsVZJrun6TssMiBmDq27DDbJFbROIDOjD0Sp/SiDTKGkLRVccY8wPiBeNJZC+CA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:07:42.097472Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.3212","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a01acbb3ea6f829dd8c4c4f8179abd1f29a05f1938f48e6f3b65885247381b31","sha256:6e6c524dbd7cf778e466d08184eb5178ebc931857f31d7f7f8dd7944b14a5711"],"state_sha256":"4a86b284d432b317638f128024b4a90c082989dd595d25b70e22655965c4fe64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WxcL7q3qZlt2kTs8GsT8AJwCAndmt4hUMkc9f3jDlgu0CWDatfnaLA61LK46Hr1FKDwB/DypNzI89Hl2UH35Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T02:47:53.648249Z","bundle_sha256":"01d266efccb7a0b09d8a5f6a0404702b15ac7e6918eb1b21b17d4b8ce0ec063c"}}