{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:IYDBK7QW4KF2UJO3WV3HRWHLKP","short_pith_number":"pith:IYDBK7QW","canonical_record":{"source":{"id":"2105.12181","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-05-25T19:25:16Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"96f10b7221fb65e23ddfe0685d25e37486d748c8e0eee5d6f16129f412e596a5","abstract_canon_sha256":"e27f63b55ab5b3afbcb59c7e9e0a18040307b9585dbe8e96e6cd3e0d9362af48"},"schema_version":"1.0"},"canonical_sha256":"4606157e16e28baa25dbb57678d8eb53c5c53ae7183b7ac9d5567c495565d4f3","source":{"kind":"arxiv","id":"2105.12181","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.12181","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"arxiv_version","alias_value":"2105.12181v1","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.12181","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"pith_short_12","alias_value":"IYDBK7QW4KF2","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"pith_short_16","alias_value":"IYDBK7QW4KF2UJO3","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"pith_short_8","alias_value":"IYDBK7QW","created_at":"2026-07-05T03:10:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:IYDBK7QW4KF2UJO3WV3HRWHLKP","target":"record","payload":{"canonical_record":{"source":{"id":"2105.12181","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-05-25T19:25:16Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"96f10b7221fb65e23ddfe0685d25e37486d748c8e0eee5d6f16129f412e596a5","abstract_canon_sha256":"e27f63b55ab5b3afbcb59c7e9e0a18040307b9585dbe8e96e6cd3e0d9362af48"},"schema_version":"1.0"},"canonical_sha256":"4606157e16e28baa25dbb57678d8eb53c5c53ae7183b7ac9d5567c495565d4f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:10:09.207418Z","signature_b64":"jbTGHugtfvkWFORPm9kimxupYZk3cDh9w9xzOAiLoky5N/eNGxPQ2rcln+gq2lMCi5dRvaApRxaQwdh5J63MCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4606157e16e28baa25dbb57678d8eb53c5c53ae7183b7ac9d5567c495565d4f3","last_reissued_at":"2026-07-05T03:10:09.206992Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:10:09.206992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.12181","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":"2026-07-05T03:10:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L4eAwSTt6wlNjzI0s0bMas6mMLYXY+XqpkQz6JntTEDWizG6JEidEMxWCpjTnPYVA4ipF23pYCfdTH1qpAclAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T19:54:26.815710Z"},"content_sha256":"8f2144a7a172f132b518221dced5252bad270aaa74bd4adb26f6b128eec86588","schema_version":"1.0","event_id":"sha256:8f2144a7a172f132b518221dced5252bad270aaa74bd4adb26f6b128eec86588"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:IYDBK7QW4KF2UJO3WV3HRWHLKP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chiral propulsion: the method of effective boundary conditions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"physics.flu-dyn","authors_text":"Alexander G. Abanov, Dmitri E. Kharzeev, Leonid A. Korneev","submitted_at":"2021-05-25T19:25:16Z","abstract_excerpt":"We propose to apply an \"effective boundary condition\" method to the problem of chiral propulsion. For the case of a rotating helix moving through a fluid at a low Reynolds number, the method amounts to replacing the original helix (in the limit of small pitch) by a cylinder, but with a special kind of partial slip boundary conditions replacing the non-slip boundary conditions on the original helix. These boundary conditions are constructed to reproduce far-field velocities of the original problem, and are defined by a few parameters (slipping lengths) that can be extracted from a problem in pl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.12181","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2105.12181/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:10:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KwzuNzcPDEW4AVQvXcNCG2FRP5OUNzusFs7erJEXrcv6MYlwhHovW8WLJD3y05p7bv81HlNMPHo1JCURn7huAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T19:54:26.816708Z"},"content_sha256":"24c32bfdfacf6e5fe09cbc92715a54eb2b4fc727cbabd05fbadc84426db634a0","schema_version":"1.0","event_id":"sha256:24c32bfdfacf6e5fe09cbc92715a54eb2b4fc727cbabd05fbadc84426db634a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP/bundle.json","state_url":"https://pith.science/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP/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":"2026-08-05T19:54:26Z","links":{"resolver":"https://pith.science/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP","bundle":"https://pith.science/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP/bundle.json","state":"https://pith.science/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IYDBK7QW4KF2UJO3WV3HRWHLKP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:IYDBK7QW4KF2UJO3WV3HRWHLKP","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":"e27f63b55ab5b3afbcb59c7e9e0a18040307b9585dbe8e96e6cd3e0d9362af48","cross_cats_sorted":["nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-05-25T19:25:16Z","title_canon_sha256":"96f10b7221fb65e23ddfe0685d25e37486d748c8e0eee5d6f16129f412e596a5"},"schema_version":"1.0","source":{"id":"2105.12181","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.12181","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"arxiv_version","alias_value":"2105.12181v1","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.12181","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"pith_short_12","alias_value":"IYDBK7QW4KF2","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"pith_short_16","alias_value":"IYDBK7QW4KF2UJO3","created_at":"2026-07-05T03:10:09Z"},{"alias_kind":"pith_short_8","alias_value":"IYDBK7QW","created_at":"2026-07-05T03:10:09Z"}],"graph_snapshots":[{"event_id":"sha256:24c32bfdfacf6e5fe09cbc92715a54eb2b4fc727cbabd05fbadc84426db634a0","target":"graph","created_at":"2026-07-05T03:10:09Z","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/2105.12181/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose to apply an \"effective boundary condition\" method to the problem of chiral propulsion. For the case of a rotating helix moving through a fluid at a low Reynolds number, the method amounts to replacing the original helix (in the limit of small pitch) by a cylinder, but with a special kind of partial slip boundary conditions replacing the non-slip boundary conditions on the original helix. These boundary conditions are constructed to reproduce far-field velocities of the original problem, and are defined by a few parameters (slipping lengths) that can be extracted from a problem in pl","authors_text":"Alexander G. Abanov, Dmitri E. Kharzeev, Leonid A. Korneev","cross_cats":["nucl-th"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-05-25T19:25:16Z","title":"Chiral propulsion: the method of effective boundary conditions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.12181","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":"sha256:8f2144a7a172f132b518221dced5252bad270aaa74bd4adb26f6b128eec86588","target":"record","created_at":"2026-07-05T03:10:09Z","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":"e27f63b55ab5b3afbcb59c7e9e0a18040307b9585dbe8e96e6cd3e0d9362af48","cross_cats_sorted":["nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-05-25T19:25:16Z","title_canon_sha256":"96f10b7221fb65e23ddfe0685d25e37486d748c8e0eee5d6f16129f412e596a5"},"schema_version":"1.0","source":{"id":"2105.12181","kind":"arxiv","version":1}},"canonical_sha256":"4606157e16e28baa25dbb57678d8eb53c5c53ae7183b7ac9d5567c495565d4f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4606157e16e28baa25dbb57678d8eb53c5c53ae7183b7ac9d5567c495565d4f3","first_computed_at":"2026-07-05T03:10:09.206992Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:10:09.206992Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jbTGHugtfvkWFORPm9kimxupYZk3cDh9w9xzOAiLoky5N/eNGxPQ2rcln+gq2lMCi5dRvaApRxaQwdh5J63MCg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:10:09.207418Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.12181","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f2144a7a172f132b518221dced5252bad270aaa74bd4adb26f6b128eec86588","sha256:24c32bfdfacf6e5fe09cbc92715a54eb2b4fc727cbabd05fbadc84426db634a0"],"state_sha256":"08b319a93f82fc4a5921f033bc1dcb49566c0970257d60ac8b05d247061835d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h67N8d4vsK2XwaBxD6M23EuFoWi2klL4Xh2LA98NcAZoAxWYqmIOYefOyh88x78hAGiD4o2QnmVLgSRyInxHCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T19:54:26.822592Z","bundle_sha256":"a390a49c4c6b071da12e227ed207b4ade91e3d0d56eb37cba54763b40c644353"}}