{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:GRSJ7DERC3XYKX7T3OQCKCYD4G","short_pith_number":"pith:GRSJ7DER","canonical_record":{"source":{"id":"0810.3925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.BM","submitted_at":"2008-10-21T20:45:01Z","cross_cats_sorted":[],"title_canon_sha256":"06863364f010e6e65f87fe7d09708fe82bbca3ba5e4cb0ca98f373c1758fff61","abstract_canon_sha256":"5ecd46dcc6d7c0f0708b5d656def0f2fd2c22a943bc8136004e48d1bf68779d0"},"schema_version":"1.0"},"canonical_sha256":"34649f8c9116ef855ff3dba0250b03e18883fe1d9b24e14af770371f3e0b871c","source":{"kind":"arxiv","id":"0810.3925","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.3925","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"arxiv_version","alias_value":"0810.3925v1","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.3925","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"pith_short_12","alias_value":"GRSJ7DERC3XY","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"GRSJ7DERC3XYKX7T","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"GRSJ7DER","created_at":"2026-05-18T12:25:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:GRSJ7DERC3XYKX7T3OQCKCYD4G","target":"record","payload":{"canonical_record":{"source":{"id":"0810.3925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.BM","submitted_at":"2008-10-21T20:45:01Z","cross_cats_sorted":[],"title_canon_sha256":"06863364f010e6e65f87fe7d09708fe82bbca3ba5e4cb0ca98f373c1758fff61","abstract_canon_sha256":"5ecd46dcc6d7c0f0708b5d656def0f2fd2c22a943bc8136004e48d1bf68779d0"},"schema_version":"1.0"},"canonical_sha256":"34649f8c9116ef855ff3dba0250b03e18883fe1d9b24e14af770371f3e0b871c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:23.754531Z","signature_b64":"+j0tWCH5dQMemuFvs/ArB+RwQnwSM/GgXof98bH/U0efbJ0CIyWrWc2aHNKryJNqltZ3jKbfKD19LMm730n2BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34649f8c9116ef855ff3dba0250b03e18883fe1d9b24e14af770371f3e0b871c","last_reissued_at":"2026-05-18T02:15:23.753741Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:23.753741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.3925","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":"2026-05-18T02:15:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nnWkk/NXzTaSKn/MsNRC66ZY39sRcfx9ybOcicOcb2ljUB9bdpNpY80/zox0q79HR+tFA0Fft8iPBAFxjAL5Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:22:04.639091Z"},"content_sha256":"a248666241e0d80320f260351a71287a5bc605cb30b1ad5ffaaafd4cff6a134a","schema_version":"1.0","event_id":"sha256:a248666241e0d80320f260351a71287a5bc605cb30b1ad5ffaaafd4cff6a134a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:GRSJ7DERC3XYKX7T3OQCKCYD4G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Twirling of actin by myosins II and V observed via polarized TIRF in a modified gliding assay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"q-bio.BM","authors_text":"Harry W. Schroeder III, John F. Beausang, Philip C. Nelson, Yale E. Goldman","submitted_at":"2008-10-21T20:45:01Z","abstract_excerpt":"The force generated between actin and myosin acts predominantly along the direction of the actin filament, resulting in relative sliding of the thick and thin filaments in muscle or transport of myosin cargos along actin tracks. Previous studies have also detected lateral forces or torques that are generated between actin and myosin, but the origin and biological role of these sideways forces is not known. Here we adapt an actin gliding filament assay in order to measure the rotation of an actin filament about its axis (twirling) as it is translocated by myosin. We quantify the rotation by det"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.3925","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":""},"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":"2026-05-18T02:15:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z0RmZt5NdzHyajO2/wA4svdGwwTd/wzQzE5ri6VW79m68usIQiyfW+jHdbbbSYUgDLlpfCjc/w/6YNwK05LiAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T15:22:04.639485Z"},"content_sha256":"8612aa3cb79370a0bfd404ef6e8ebefee579653451431236098e3b7eb19bb498","schema_version":"1.0","event_id":"sha256:8612aa3cb79370a0bfd404ef6e8ebefee579653451431236098e3b7eb19bb498"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G/bundle.json","state_url":"https://pith.science/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G/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":"2026-05-27T15:22:04Z","links":{"resolver":"https://pith.science/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G","bundle":"https://pith.science/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G/bundle.json","state":"https://pith.science/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GRSJ7DERC3XYKX7T3OQCKCYD4G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:GRSJ7DERC3XYKX7T3OQCKCYD4G","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":"5ecd46dcc6d7c0f0708b5d656def0f2fd2c22a943bc8136004e48d1bf68779d0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.BM","submitted_at":"2008-10-21T20:45:01Z","title_canon_sha256":"06863364f010e6e65f87fe7d09708fe82bbca3ba5e4cb0ca98f373c1758fff61"},"schema_version":"1.0","source":{"id":"0810.3925","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.3925","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"arxiv_version","alias_value":"0810.3925v1","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.3925","created_at":"2026-05-18T02:15:23Z"},{"alias_kind":"pith_short_12","alias_value":"GRSJ7DERC3XY","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"GRSJ7DERC3XYKX7T","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"GRSJ7DER","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:8612aa3cb79370a0bfd404ef6e8ebefee579653451431236098e3b7eb19bb498","target":"graph","created_at":"2026-05-18T02:15:23Z","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":"The force generated between actin and myosin acts predominantly along the direction of the actin filament, resulting in relative sliding of the thick and thin filaments in muscle or transport of myosin cargos along actin tracks. Previous studies have also detected lateral forces or torques that are generated between actin and myosin, but the origin and biological role of these sideways forces is not known. Here we adapt an actin gliding filament assay in order to measure the rotation of an actin filament about its axis (twirling) as it is translocated by myosin. We quantify the rotation by det","authors_text":"Harry W. Schroeder III, John F. Beausang, Philip C. Nelson, Yale E. Goldman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.BM","submitted_at":"2008-10-21T20:45:01Z","title":"Twirling of actin by myosins II and V observed via polarized TIRF in a modified gliding assay"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.3925","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:a248666241e0d80320f260351a71287a5bc605cb30b1ad5ffaaafd4cff6a134a","target":"record","created_at":"2026-05-18T02:15:23Z","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":"5ecd46dcc6d7c0f0708b5d656def0f2fd2c22a943bc8136004e48d1bf68779d0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.BM","submitted_at":"2008-10-21T20:45:01Z","title_canon_sha256":"06863364f010e6e65f87fe7d09708fe82bbca3ba5e4cb0ca98f373c1758fff61"},"schema_version":"1.0","source":{"id":"0810.3925","kind":"arxiv","version":1}},"canonical_sha256":"34649f8c9116ef855ff3dba0250b03e18883fe1d9b24e14af770371f3e0b871c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34649f8c9116ef855ff3dba0250b03e18883fe1d9b24e14af770371f3e0b871c","first_computed_at":"2026-05-18T02:15:23.753741Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:23.753741Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+j0tWCH5dQMemuFvs/ArB+RwQnwSM/GgXof98bH/U0efbJ0CIyWrWc2aHNKryJNqltZ3jKbfKD19LMm730n2BA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:23.754531Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.3925","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a248666241e0d80320f260351a71287a5bc605cb30b1ad5ffaaafd4cff6a134a","sha256:8612aa3cb79370a0bfd404ef6e8ebefee579653451431236098e3b7eb19bb498"],"state_sha256":"d5c7b3bedfe276c5972fca983888cec5467769bd987308b5a49066e819dddf01"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UbD0O4gzs7oeGgYygfZTz4Pu+tedMngbQpFTmNboBG2R9sb2gktb8+/YPtRfFXFuVjnXh1e9wSp8mlhGXDoiAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T15:22:04.642407Z","bundle_sha256":"73b2403552dd115f7e044fcf67a1481f061035543972370d9bed00cf00d74f7c"}}