{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PQZNO56JJVDJZHQBKXUHV44BV2","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":"526b513c9e86ac00df37dc03f17af2737d72cbc7ce6addb51a618cbcd738a5f6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-05-26T16:40:09Z","title_canon_sha256":"a914149bae4f23a13503e9dd96a1d8034d639013e90f9df3236677b10ebff95e"},"schema_version":"1.0","source":{"id":"2505.20198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.20198","created_at":"2026-07-05T11:09:54Z"},{"alias_kind":"arxiv_version","alias_value":"2505.20198v1","created_at":"2026-07-05T11:09:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.20198","created_at":"2026-07-05T11:09:54Z"},{"alias_kind":"pith_short_12","alias_value":"PQZNO56JJVDJ","created_at":"2026-07-05T11:09:54Z"},{"alias_kind":"pith_short_16","alias_value":"PQZNO56JJVDJZHQB","created_at":"2026-07-05T11:09:54Z"},{"alias_kind":"pith_short_8","alias_value":"PQZNO56J","created_at":"2026-07-05T11:09:54Z"}],"graph_snapshots":[{"event_id":"sha256:47b584bce31e6c314b573550a476f551afab61cdaaf2685dfb91f5b5d407586c","target":"graph","created_at":"2026-07-05T11:09:54Z","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/2505.20198/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe in this paper a crossbridge model in which an attached crossbridge behaves like a linear spring with a variable rest length. We assume in particular that the rest length has a linear force-velocity relation, and that the force and rest length are both zero at the moment of crossbridge attachment. Crossbridges that are not attached in our model have a fixed probability per unit time of attachment, and attached crossbridges have a probability per unit time of detachment that is a function of the crossbridge force. This detachment rate is uniquely determined by the requirement that a ","authors_text":"Charles S. Peskin, Mengjian Hua","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-05-26T16:40:09Z","title":"Muscle Crossbridge Theory With Internal Crossbridge Dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.20198","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:c653bfed76f3e78838ae261e90eeb45f5f41a5b22cdcc1f7bd4f23f46af56288","target":"record","created_at":"2026-07-05T11:09:54Z","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":"526b513c9e86ac00df37dc03f17af2737d72cbc7ce6addb51a618cbcd738a5f6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-05-26T16:40:09Z","title_canon_sha256":"a914149bae4f23a13503e9dd96a1d8034d639013e90f9df3236677b10ebff95e"},"schema_version":"1.0","source":{"id":"2505.20198","kind":"arxiv","version":1}},"canonical_sha256":"7c32d777c94d469c9e0155e87af381aeb9e5cd226aab1c922a50717a29b81411","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c32d777c94d469c9e0155e87af381aeb9e5cd226aab1c922a50717a29b81411","first_computed_at":"2026-07-05T11:09:54.063222Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:09:54.063222Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3MvObBF8ScTM4wWnFKtUz5YCzMu6fEh2NAgPIzXur36YJNII8svNCI74BOPHRfcR1sancdOvz5rm3xe5h2vbBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:09:54.063760Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.20198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c653bfed76f3e78838ae261e90eeb45f5f41a5b22cdcc1f7bd4f23f46af56288","sha256:47b584bce31e6c314b573550a476f551afab61cdaaf2685dfb91f5b5d407586c"],"state_sha256":"54d63f570e3c8ede9e84ec336db803c5241e6844ab16c414bf391721eaee6bb5"}