{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:MXIEUY5TNFJYV7EB6W4MEOFYWA","short_pith_number":"pith:MXIEUY5T","canonical_record":{"source":{"id":"0903.0312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.SC","submitted_at":"2009-03-02T15:20:26Z","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"title_canon_sha256":"9f14cf6976790b1c27cf64ba90bdf1be2529b5b75fd85bc9c72e4730f9f17d8c","abstract_canon_sha256":"56c2be1fbeb4c66c3c57a9623aa7fb3815b2424f1f8aa7c6ac35ed4278f632d6"},"schema_version":"1.0"},"canonical_sha256":"65d04a63b369538afc81f5b8c238b8b03ee5c43c404cae341c4fec5dec0ddb54","source":{"kind":"arxiv","id":"0903.0312","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.0312","created_at":"2026-05-18T02:14:37Z"},{"alias_kind":"arxiv_version","alias_value":"0903.0312v1","created_at":"2026-05-18T02:14:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.0312","created_at":"2026-05-18T02:14:37Z"},{"alias_kind":"pith_short_12","alias_value":"MXIEUY5TNFJY","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"MXIEUY5TNFJYV7EB","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"MXIEUY5T","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:MXIEUY5TNFJYV7EB6W4MEOFYWA","target":"record","payload":{"canonical_record":{"source":{"id":"0903.0312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.SC","submitted_at":"2009-03-02T15:20:26Z","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"title_canon_sha256":"9f14cf6976790b1c27cf64ba90bdf1be2529b5b75fd85bc9c72e4730f9f17d8c","abstract_canon_sha256":"56c2be1fbeb4c66c3c57a9623aa7fb3815b2424f1f8aa7c6ac35ed4278f632d6"},"schema_version":"1.0"},"canonical_sha256":"65d04a63b369538afc81f5b8c238b8b03ee5c43c404cae341c4fec5dec0ddb54","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:37.839020Z","signature_b64":"IZfsvEZm0FmvQmImFiPTlhPLkeeMGI/piJr+/CSZuWqk18t7n6HaYoD9tuDkav2r3usfM1PkEef+Ftwk4BJNCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65d04a63b369538afc81f5b8c238b8b03ee5c43c404cae341c4fec5dec0ddb54","last_reissued_at":"2026-05-18T02:14:37.838293Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:37.838293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.0312","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":"2026-05-18T02:14:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LOpL3yXps70SsJnkjRxASdclfQlzNmSTzFI31WaiFNNWsqaFthoh57ZV5Sys2Y7Sdnvo8QqV95FtIDLbVPclCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:07:38.524882Z"},"content_sha256":"99ef581b07322af194179f31ae084f00f48e94a38543fd9d7d0d15a7790528f1","schema_version":"1.0","event_id":"sha256:99ef581b07322af194179f31ae084f00f48e94a38543fd9d7d0d15a7790528f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:MXIEUY5TNFJYV7EB6W4MEOFYWA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tug-of-war in motility assay experiments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft","physics.bio-ph"],"primary_cat":"q-bio.SC","authors_text":"Daniel Hexner, Yariv Kafri","submitted_at":"2009-03-02T15:20:26Z","abstract_excerpt":"The dynamics of two groups of molecular motors pulling in opposite directions on a rigid filament is studied theoretically. To this end we first consider the behavior of one set of motors pulling in a single direction against an external force using a new mean-field approach. Based on these results we analyze a similar setup with two sets of motors pulling in opposite directions in a tug-of-war in the presence of an external force. In both cases we find that the interplay of fluid friction and protein friction leads to a complex phase diagram where the force-velocity relations can exhibit regi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.0312","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":"2026-05-18T02:14:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4irRBBPhqjsTjErm7+tZHsxjxViobmVcDDaEXyK+Ko7558On94Mkwxn9CgtSn/BPw3GZBDYHkyiDjS574uEFBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:07:38.525603Z"},"content_sha256":"fe482c4fc7b562a0c4d0a05b93f62394ed9d89e59048652f5b58b59a2fe663f0","schema_version":"1.0","event_id":"sha256:fe482c4fc7b562a0c4d0a05b93f62394ed9d89e59048652f5b58b59a2fe663f0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA/bundle.json","state_url":"https://pith.science/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA/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":"2026-05-29T15:07:38Z","links":{"resolver":"https://pith.science/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA","bundle":"https://pith.science/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA/bundle.json","state":"https://pith.science/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MXIEUY5TNFJYV7EB6W4MEOFYWA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:MXIEUY5TNFJYV7EB6W4MEOFYWA","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":"56c2be1fbeb4c66c3c57a9623aa7fb3815b2424f1f8aa7c6ac35ed4278f632d6","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.SC","submitted_at":"2009-03-02T15:20:26Z","title_canon_sha256":"9f14cf6976790b1c27cf64ba90bdf1be2529b5b75fd85bc9c72e4730f9f17d8c"},"schema_version":"1.0","source":{"id":"0903.0312","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.0312","created_at":"2026-05-18T02:14:37Z"},{"alias_kind":"arxiv_version","alias_value":"0903.0312v1","created_at":"2026-05-18T02:14:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.0312","created_at":"2026-05-18T02:14:37Z"},{"alias_kind":"pith_short_12","alias_value":"MXIEUY5TNFJY","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"MXIEUY5TNFJYV7EB","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"MXIEUY5T","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:fe482c4fc7b562a0c4d0a05b93f62394ed9d89e59048652f5b58b59a2fe663f0","target":"graph","created_at":"2026-05-18T02:14:37Z","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 dynamics of two groups of molecular motors pulling in opposite directions on a rigid filament is studied theoretically. To this end we first consider the behavior of one set of motors pulling in a single direction against an external force using a new mean-field approach. Based on these results we analyze a similar setup with two sets of motors pulling in opposite directions in a tug-of-war in the presence of an external force. In both cases we find that the interplay of fluid friction and protein friction leads to a complex phase diagram where the force-velocity relations can exhibit regi","authors_text":"Daniel Hexner, Yariv Kafri","cross_cats":["cond-mat.soft","physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.SC","submitted_at":"2009-03-02T15:20:26Z","title":"Tug-of-war in motility assay experiments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.0312","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":"sha256:99ef581b07322af194179f31ae084f00f48e94a38543fd9d7d0d15a7790528f1","target":"record","created_at":"2026-05-18T02:14:37Z","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":"56c2be1fbeb4c66c3c57a9623aa7fb3815b2424f1f8aa7c6ac35ed4278f632d6","cross_cats_sorted":["cond-mat.soft","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.SC","submitted_at":"2009-03-02T15:20:26Z","title_canon_sha256":"9f14cf6976790b1c27cf64ba90bdf1be2529b5b75fd85bc9c72e4730f9f17d8c"},"schema_version":"1.0","source":{"id":"0903.0312","kind":"arxiv","version":1}},"canonical_sha256":"65d04a63b369538afc81f5b8c238b8b03ee5c43c404cae341c4fec5dec0ddb54","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65d04a63b369538afc81f5b8c238b8b03ee5c43c404cae341c4fec5dec0ddb54","first_computed_at":"2026-05-18T02:14:37.838293Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:37.838293Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IZfsvEZm0FmvQmImFiPTlhPLkeeMGI/piJr+/CSZuWqk18t7n6HaYoD9tuDkav2r3usfM1PkEef+Ftwk4BJNCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:37.839020Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.0312","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99ef581b07322af194179f31ae084f00f48e94a38543fd9d7d0d15a7790528f1","sha256:fe482c4fc7b562a0c4d0a05b93f62394ed9d89e59048652f5b58b59a2fe663f0"],"state_sha256":"d255cc146e3c978d2878d7e3b153a64ea797a8676a606c79d8f64242bc2c9fcc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7X1l5BAmwrbc2sz/Wccm8hLYDbx66JuXTADEni8rfIAMKknI9i4bpRfaz5wBKgec0s2vzvTc3zjlWUBYR1QfCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:07:38.529328Z","bundle_sha256":"97deccdd8c09c879205e90a2041decdfbeec3ee1af475b75785bc703eff82010"}}