{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:YQT3D643UIHGWZIQ4RBFBXCF75","short_pith_number":"pith:YQT3D643","canonical_record":{"source":{"id":"1810.08165","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-18T17:05:54Z","cross_cats_sorted":["physics.bio-ph","q-bio.CB"],"title_canon_sha256":"1ff07182a43f4df234b211c9661dac72edf5d098b85bd458514569b1b162ea05","abstract_canon_sha256":"db63cc90435b531228f864677966f6e5e0b5da7ef61ce4df2889dc145dd8cc4c"},"schema_version":"1.0"},"canonical_sha256":"c427b1fb9ba20e6b6510e44250dc45ff4903413f717afd307c294fc6e6a1a0bd","source":{"kind":"arxiv","id":"1810.08165","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.08165","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"arxiv_version","alias_value":"1810.08165v2","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.08165","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"pith_short_12","alias_value":"YQT3D643UIHG","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YQT3D643UIHGWZIQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YQT3D643","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:YQT3D643UIHGWZIQ4RBFBXCF75","target":"record","payload":{"canonical_record":{"source":{"id":"1810.08165","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-18T17:05:54Z","cross_cats_sorted":["physics.bio-ph","q-bio.CB"],"title_canon_sha256":"1ff07182a43f4df234b211c9661dac72edf5d098b85bd458514569b1b162ea05","abstract_canon_sha256":"db63cc90435b531228f864677966f6e5e0b5da7ef61ce4df2889dc145dd8cc4c"},"schema_version":"1.0"},"canonical_sha256":"c427b1fb9ba20e6b6510e44250dc45ff4903413f717afd307c294fc6e6a1a0bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:12.978762Z","signature_b64":"1z1o8ey7Y8wlZmbK28ARGPm9d+/DqrOXh8eIAfcZARnin8XQX7ksybVk6M3ixpmxxU8HzxRAo94ngeajequfAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c427b1fb9ba20e6b6510e44250dc45ff4903413f717afd307c294fc6e6a1a0bd","last_reissued_at":"2026-05-17T23:44:12.978197Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:12.978197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.08165","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":"2026-05-17T23:44:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TCidbS3JL9oMcTRvgKRLXwTcMZkFxYhuDk8l+nU3QZvDZ+SdKTZ18Y/eXgJh9X366UEqOSi7lIlUF0tbdP7MCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:03:18.280921Z"},"content_sha256":"2efea1e30891d5151c4360f735be551f7083e40c94902702e85861d72f485824","schema_version":"1.0","event_id":"sha256:2efea1e30891d5151c4360f735be551f7083e40c94902702e85861d72f485824"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:YQT3D643UIHGWZIQ4RBFBXCF75","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Origin of slow stress relaxation in the cytoskeleton","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph","q-bio.CB"],"primary_cat":"cond-mat.soft","authors_text":"F. C. MacKintosh, Gijsje H. Koenderink, Yuval Mulla","submitted_at":"2018-10-18T17:05:54Z","abstract_excerpt":"Dynamically crosslinked semiflexible biopolymers such as the actin cytoskeleton govern the mechanical behavior of living cells. Semiflexible biopolymers nonlinearly stiffen in response to mechanical loads, whereas the crosslinker dynamics allow for stress relaxation over time. Here we show, through rheology and theoretical modeling, that the combined nonlinearity in time and stress leads to an unexpectedly slow stress relaxation, similar to the dynamics of disordered systems close to the glass transition. Our work suggests that transient crosslinking combined with internal stress can explain p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.08165","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":"2026-05-17T23:44:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c2YB7nfsXlRvYpnXexy3N0A8yOvmjeM+V0PxnE4T7Tcn39oJ1DilRgIAG3C6PFCuomYLV8OHvhEQbqr1MvMsCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:03:18.281829Z"},"content_sha256":"198eed1a21c70e46ca3873c4e45627004f37c7c89502cf5fa27fa84681832c59","schema_version":"1.0","event_id":"sha256:198eed1a21c70e46ca3873c4e45627004f37c7c89502cf5fa27fa84681832c59"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YQT3D643UIHGWZIQ4RBFBXCF75/bundle.json","state_url":"https://pith.science/pith/YQT3D643UIHGWZIQ4RBFBXCF75/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YQT3D643UIHGWZIQ4RBFBXCF75/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":"2026-05-30T05:03:18Z","links":{"resolver":"https://pith.science/pith/YQT3D643UIHGWZIQ4RBFBXCF75","bundle":"https://pith.science/pith/YQT3D643UIHGWZIQ4RBFBXCF75/bundle.json","state":"https://pith.science/pith/YQT3D643UIHGWZIQ4RBFBXCF75/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YQT3D643UIHGWZIQ4RBFBXCF75/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YQT3D643UIHGWZIQ4RBFBXCF75","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":"db63cc90435b531228f864677966f6e5e0b5da7ef61ce4df2889dc145dd8cc4c","cross_cats_sorted":["physics.bio-ph","q-bio.CB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-18T17:05:54Z","title_canon_sha256":"1ff07182a43f4df234b211c9661dac72edf5d098b85bd458514569b1b162ea05"},"schema_version":"1.0","source":{"id":"1810.08165","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.08165","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"arxiv_version","alias_value":"1810.08165v2","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.08165","created_at":"2026-05-17T23:44:12Z"},{"alias_kind":"pith_short_12","alias_value":"YQT3D643UIHG","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YQT3D643UIHGWZIQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YQT3D643","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:198eed1a21c70e46ca3873c4e45627004f37c7c89502cf5fa27fa84681832c59","target":"graph","created_at":"2026-05-17T23:44:12Z","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":"Dynamically crosslinked semiflexible biopolymers such as the actin cytoskeleton govern the mechanical behavior of living cells. Semiflexible biopolymers nonlinearly stiffen in response to mechanical loads, whereas the crosslinker dynamics allow for stress relaxation over time. Here we show, through rheology and theoretical modeling, that the combined nonlinearity in time and stress leads to an unexpectedly slow stress relaxation, similar to the dynamics of disordered systems close to the glass transition. Our work suggests that transient crosslinking combined with internal stress can explain p","authors_text":"F. C. MacKintosh, Gijsje H. Koenderink, Yuval Mulla","cross_cats":["physics.bio-ph","q-bio.CB"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-18T17:05:54Z","title":"Origin of slow stress relaxation in the cytoskeleton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.08165","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":"sha256:2efea1e30891d5151c4360f735be551f7083e40c94902702e85861d72f485824","target":"record","created_at":"2026-05-17T23:44:12Z","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":"db63cc90435b531228f864677966f6e5e0b5da7ef61ce4df2889dc145dd8cc4c","cross_cats_sorted":["physics.bio-ph","q-bio.CB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-10-18T17:05:54Z","title_canon_sha256":"1ff07182a43f4df234b211c9661dac72edf5d098b85bd458514569b1b162ea05"},"schema_version":"1.0","source":{"id":"1810.08165","kind":"arxiv","version":2}},"canonical_sha256":"c427b1fb9ba20e6b6510e44250dc45ff4903413f717afd307c294fc6e6a1a0bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c427b1fb9ba20e6b6510e44250dc45ff4903413f717afd307c294fc6e6a1a0bd","first_computed_at":"2026-05-17T23:44:12.978197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:12.978197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1z1o8ey7Y8wlZmbK28ARGPm9d+/DqrOXh8eIAfcZARnin8XQX7ksybVk6M3ixpmxxU8HzxRAo94ngeajequfAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:12.978762Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.08165","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2efea1e30891d5151c4360f735be551f7083e40c94902702e85861d72f485824","sha256:198eed1a21c70e46ca3873c4e45627004f37c7c89502cf5fa27fa84681832c59"],"state_sha256":"786c305d2d39cddc771c66b86fd81586d26a3c87b440b41c43f7415e0d6574a9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qw4IflVcWLOh7YxEDAplIqOMm67+uFu923eMZakfVf4kgV+HAahaxSv/g/dyDaNKYJOcnd1fs86GIEIJIzpcCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:03:18.285596Z","bundle_sha256":"f1aae4055d584c976e478982d7c2bcb8a1a2ea9a756232f4db17d58a6faed634"}}