{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:JAC4QLIEGLIMBPWKQCSCN7LEIP","short_pith_number":"pith:JAC4QLIE","canonical_record":{"source":{"id":"1205.6125","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-05-28T14:23:37Z","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"title_canon_sha256":"2243e78b46f6dc0176506f19ccf3e4dfbce07eab7612468c8baf917c1153f544","abstract_canon_sha256":"7f579dbc560d200d05d5960589b9dfa2e1aeb85c9c0af1b3d2421928143da870"},"schema_version":"1.0"},"canonical_sha256":"4805c82d0432d0c0beca80a426fd6443ec0e8cc4613ed28f78345d1021b031a1","source":{"kind":"arxiv","id":"1205.6125","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6125","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6125v2","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6125","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"pith_short_12","alias_value":"JAC4QLIEGLIM","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JAC4QLIEGLIMBPWK","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JAC4QLIE","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:JAC4QLIEGLIMBPWKQCSCN7LEIP","target":"record","payload":{"canonical_record":{"source":{"id":"1205.6125","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-05-28T14:23:37Z","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"title_canon_sha256":"2243e78b46f6dc0176506f19ccf3e4dfbce07eab7612468c8baf917c1153f544","abstract_canon_sha256":"7f579dbc560d200d05d5960589b9dfa2e1aeb85c9c0af1b3d2421928143da870"},"schema_version":"1.0"},"canonical_sha256":"4805c82d0432d0c0beca80a426fd6443ec0e8cc4613ed28f78345d1021b031a1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:00.312571Z","signature_b64":"ShEAQ6mEYEYvHkTFpTh0HicwEyun+TNrYFS9hD7ruNJHkt8BfyzxL46XGumck3y3jH9MVcZ72tNXhILoj77zBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4805c82d0432d0c0beca80a426fd6443ec0e8cc4613ed28f78345d1021b031a1","last_reissued_at":"2026-05-18T03:45:00.311991Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:00.311991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.6125","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":"2026-05-18T03:45:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r//rfAzlt3+Bq+nFhptelyBicF8gdG4yRfOU80XBITZlh2CYNqpsMKE/+8TWnG7XRHuMk78Xslv6cPUqI3zaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T17:16:28.439824Z"},"content_sha256":"d107f36602e88e3e56be500ec5326149f5f29bd0a3ac56d44a6db65f095293fd","schema_version":"1.0","event_id":"sha256:d107f36602e88e3e56be500ec5326149f5f29bd0a3ac56d44a6db65f095293fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:JAC4QLIEGLIMBPWKQCSCN7LEIP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Directional motion of forced polymer chains with hydrodynamic interaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph","physics.flu-dyn"],"primary_cat":"cond-mat.soft","authors_text":"Alessandro Fiasconaro, Daniel Santos-Oliv\\'an, Fernando Falo","submitted_at":"2012-05-28T14:23:37Z","abstract_excerpt":"We study the propulsion of a one-dimensional (1D) polymer chain under sinusoidal external forces in the overdamped (low Reynolds number) regime. We show that, when hydrodynamical interactions are included, the polymer presents directional motion which depends on the phase differences of the external force applied along the chain. Moreover, the velocity shows a maximum as a function of the frequency. We discuss the relevance of all these results in light of recent nanotechnology experiments."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6125","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":"2026-05-18T03:45:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zu/GPv+i3uFZX6FNb4QccmSc0FrFcW3F8kjSFOsa3sYjdc8eCv6GomjQaGZ4pkPdb2z957ltyT9d6xx5JieVBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T17:16:28.440500Z"},"content_sha256":"176a1f92f534813515432f36587f1d9b13118d95d9bd38062cd7adbc51f32b37","schema_version":"1.0","event_id":"sha256:176a1f92f534813515432f36587f1d9b13118d95d9bd38062cd7adbc51f32b37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP/bundle.json","state_url":"https://pith.science/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP/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":"2026-06-09T17:16:28Z","links":{"resolver":"https://pith.science/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP","bundle":"https://pith.science/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP/bundle.json","state":"https://pith.science/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JAC4QLIEGLIMBPWKQCSCN7LEIP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:JAC4QLIEGLIMBPWKQCSCN7LEIP","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":"7f579dbc560d200d05d5960589b9dfa2e1aeb85c9c0af1b3d2421928143da870","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-05-28T14:23:37Z","title_canon_sha256":"2243e78b46f6dc0176506f19ccf3e4dfbce07eab7612468c8baf917c1153f544"},"schema_version":"1.0","source":{"id":"1205.6125","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.6125","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"arxiv_version","alias_value":"1205.6125v2","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.6125","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"pith_short_12","alias_value":"JAC4QLIEGLIM","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JAC4QLIEGLIMBPWK","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JAC4QLIE","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:176a1f92f534813515432f36587f1d9b13118d95d9bd38062cd7adbc51f32b37","target":"graph","created_at":"2026-05-18T03:45:00Z","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":"We study the propulsion of a one-dimensional (1D) polymer chain under sinusoidal external forces in the overdamped (low Reynolds number) regime. We show that, when hydrodynamical interactions are included, the polymer presents directional motion which depends on the phase differences of the external force applied along the chain. Moreover, the velocity shows a maximum as a function of the frequency. We discuss the relevance of all these results in light of recent nanotechnology experiments.","authors_text":"Alessandro Fiasconaro, Daniel Santos-Oliv\\'an, Fernando Falo","cross_cats":["physics.bio-ph","physics.flu-dyn"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-05-28T14:23:37Z","title":"Directional motion of forced polymer chains with hydrodynamic interaction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.6125","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:d107f36602e88e3e56be500ec5326149f5f29bd0a3ac56d44a6db65f095293fd","target":"record","created_at":"2026-05-18T03:45:00Z","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":"7f579dbc560d200d05d5960589b9dfa2e1aeb85c9c0af1b3d2421928143da870","cross_cats_sorted":["physics.bio-ph","physics.flu-dyn"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-05-28T14:23:37Z","title_canon_sha256":"2243e78b46f6dc0176506f19ccf3e4dfbce07eab7612468c8baf917c1153f544"},"schema_version":"1.0","source":{"id":"1205.6125","kind":"arxiv","version":2}},"canonical_sha256":"4805c82d0432d0c0beca80a426fd6443ec0e8cc4613ed28f78345d1021b031a1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4805c82d0432d0c0beca80a426fd6443ec0e8cc4613ed28f78345d1021b031a1","first_computed_at":"2026-05-18T03:45:00.311991Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:45:00.311991Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ShEAQ6mEYEYvHkTFpTh0HicwEyun+TNrYFS9hD7ruNJHkt8BfyzxL46XGumck3y3jH9MVcZ72tNXhILoj77zBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:45:00.312571Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.6125","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d107f36602e88e3e56be500ec5326149f5f29bd0a3ac56d44a6db65f095293fd","sha256:176a1f92f534813515432f36587f1d9b13118d95d9bd38062cd7adbc51f32b37"],"state_sha256":"bcaa72708fd6855e7742dd80a613cfc02e84bf6ecbc3dcc1c0cdc2b48fe74a88"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pmB7RXLsxbnlv0ndrt14aBrBNwyFMGDJKT8jFO+g1qPJa3WZplVF51GPIrD1QyClKBZZzYHGTeEAIdLULIjwDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T17:16:28.444144Z","bundle_sha256":"7644cfe97f9c5772cb863087e717f5fbcd190d669ee381d14dcaa244a86b101c"}}