{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:4GJNDJBTECGOTAXNRZUMA7TLLH","short_pith_number":"pith:4GJNDJBT","canonical_record":{"source":{"id":"1806.04320","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-06-12T04:06:45Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"a7fc310c0f15068acfb316eb60ae74969a961f7777b4805e854c2f2b2f72f055","abstract_canon_sha256":"2b85310c9522ae96189cb736b04838a84af3a3748e0c8facdf61e26b8a292f23"},"schema_version":"1.0"},"canonical_sha256":"e192d1a433208ce982ed8e68c07e6b59e797afd15102b958aac353fa03ba83f9","source":{"kind":"arxiv","id":"1806.04320","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.04320","created_at":"2026-05-18T00:13:35Z"},{"alias_kind":"arxiv_version","alias_value":"1806.04320v1","created_at":"2026-05-18T00:13:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.04320","created_at":"2026-05-18T00:13:35Z"},{"alias_kind":"pith_short_12","alias_value":"4GJNDJBTECGO","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4GJNDJBTECGOTAXN","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4GJNDJBT","created_at":"2026-05-18T12:32:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:4GJNDJBTECGOTAXNRZUMA7TLLH","target":"record","payload":{"canonical_record":{"source":{"id":"1806.04320","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-06-12T04:06:45Z","cross_cats_sorted":["cond-mat.soft"],"title_canon_sha256":"a7fc310c0f15068acfb316eb60ae74969a961f7777b4805e854c2f2b2f72f055","abstract_canon_sha256":"2b85310c9522ae96189cb736b04838a84af3a3748e0c8facdf61e26b8a292f23"},"schema_version":"1.0"},"canonical_sha256":"e192d1a433208ce982ed8e68c07e6b59e797afd15102b958aac353fa03ba83f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:35.886817Z","signature_b64":"9F1SGmeIcmRtR9p/oPdCqXLPjfdvpEPKZhy/yDOU16k5A1LfSegwVDx9M2VrnSBzE+esmWUi1QsuvZPk7kbpCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e192d1a433208ce982ed8e68c07e6b59e797afd15102b958aac353fa03ba83f9","last_reissued_at":"2026-05-18T00:13:35.886095Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:35.886095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.04320","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":"2026-05-18T00:13:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"boU8EIe8fqJx8Z+FP1FCJT0AwNJt/lHj7jCt58nMG1tXDpjr/4dWoS12as2yAuwTNYI7YFfZb3ccJcMCirScAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:09:28.180543Z"},"content_sha256":"656204da3677a0346d21b89adae5dcbc0f935a715de6fd0839013c541ebb9a8d","schema_version":"1.0","event_id":"sha256:656204da3677a0346d21b89adae5dcbc0f935a715de6fd0839013c541ebb9a8d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:4GJNDJBTECGOTAXNRZUMA7TLLH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Asymmetric motion of magnetically actuated artificial cilia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.soft"],"primary_cat":"physics.bio-ph","authors_text":"Alexander Alexeev, Matthew Ballard, Peter J. Hesketh, Srinivas Hanasoge","submitted_at":"2018-06-12T04:06:45Z","abstract_excerpt":"Most microorganisms use hair-like cilia with asymmetric beating to perform vital bio-physical processes. In this paper, we demonstrate a novel fabrication method for creating magnetic artificial cilia capable of such biologically inspired asymmetrical beating pattern essential for creating microfluidic transport in low Reynolds number. The cilia are fabricated using a lithographic process in conjunction with deposition of magnetic nickel-iron permalloy to create flexible filaments that can be manipulated by varying an external magnetic field. A rotating permanent magnet is used to actuate the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.04320","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":"2026-05-18T00:13:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4m5qfBF4WRVYZJBCVdNsFpE5rCsvQRgID04kgYhwN5L/g74DllT8Xcvd4PTbdna5yrz8Dmn4oaphyLwIJv+XBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:09:28.181172Z"},"content_sha256":"6ef9e01cf6f56e1e9d7e57e000b521179f2eb8d4727eb0335ac82b9b7ca4e319","schema_version":"1.0","event_id":"sha256:6ef9e01cf6f56e1e9d7e57e000b521179f2eb8d4727eb0335ac82b9b7ca4e319"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4GJNDJBTECGOTAXNRZUMA7TLLH/bundle.json","state_url":"https://pith.science/pith/4GJNDJBTECGOTAXNRZUMA7TLLH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4GJNDJBTECGOTAXNRZUMA7TLLH/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":"2026-05-27T08:09:28Z","links":{"resolver":"https://pith.science/pith/4GJNDJBTECGOTAXNRZUMA7TLLH","bundle":"https://pith.science/pith/4GJNDJBTECGOTAXNRZUMA7TLLH/bundle.json","state":"https://pith.science/pith/4GJNDJBTECGOTAXNRZUMA7TLLH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4GJNDJBTECGOTAXNRZUMA7TLLH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:4GJNDJBTECGOTAXNRZUMA7TLLH","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":"2b85310c9522ae96189cb736b04838a84af3a3748e0c8facdf61e26b8a292f23","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-06-12T04:06:45Z","title_canon_sha256":"a7fc310c0f15068acfb316eb60ae74969a961f7777b4805e854c2f2b2f72f055"},"schema_version":"1.0","source":{"id":"1806.04320","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.04320","created_at":"2026-05-18T00:13:35Z"},{"alias_kind":"arxiv_version","alias_value":"1806.04320v1","created_at":"2026-05-18T00:13:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.04320","created_at":"2026-05-18T00:13:35Z"},{"alias_kind":"pith_short_12","alias_value":"4GJNDJBTECGO","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_16","alias_value":"4GJNDJBTECGOTAXN","created_at":"2026-05-18T12:32:05Z"},{"alias_kind":"pith_short_8","alias_value":"4GJNDJBT","created_at":"2026-05-18T12:32:05Z"}],"graph_snapshots":[{"event_id":"sha256:6ef9e01cf6f56e1e9d7e57e000b521179f2eb8d4727eb0335ac82b9b7ca4e319","target":"graph","created_at":"2026-05-18T00:13:35Z","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":"Most microorganisms use hair-like cilia with asymmetric beating to perform vital bio-physical processes. In this paper, we demonstrate a novel fabrication method for creating magnetic artificial cilia capable of such biologically inspired asymmetrical beating pattern essential for creating microfluidic transport in low Reynolds number. The cilia are fabricated using a lithographic process in conjunction with deposition of magnetic nickel-iron permalloy to create flexible filaments that can be manipulated by varying an external magnetic field. A rotating permanent magnet is used to actuate the ","authors_text":"Alexander Alexeev, Matthew Ballard, Peter J. Hesketh, Srinivas Hanasoge","cross_cats":["cond-mat.soft"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-06-12T04:06:45Z","title":"Asymmetric motion of magnetically actuated artificial cilia"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.04320","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":"sha256:656204da3677a0346d21b89adae5dcbc0f935a715de6fd0839013c541ebb9a8d","target":"record","created_at":"2026-05-18T00:13:35Z","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":"2b85310c9522ae96189cb736b04838a84af3a3748e0c8facdf61e26b8a292f23","cross_cats_sorted":["cond-mat.soft"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-06-12T04:06:45Z","title_canon_sha256":"a7fc310c0f15068acfb316eb60ae74969a961f7777b4805e854c2f2b2f72f055"},"schema_version":"1.0","source":{"id":"1806.04320","kind":"arxiv","version":1}},"canonical_sha256":"e192d1a433208ce982ed8e68c07e6b59e797afd15102b958aac353fa03ba83f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e192d1a433208ce982ed8e68c07e6b59e797afd15102b958aac353fa03ba83f9","first_computed_at":"2026-05-18T00:13:35.886095Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:35.886095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9F1SGmeIcmRtR9p/oPdCqXLPjfdvpEPKZhy/yDOU16k5A1LfSegwVDx9M2VrnSBzE+esmWUi1QsuvZPk7kbpCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:35.886817Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.04320","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:656204da3677a0346d21b89adae5dcbc0f935a715de6fd0839013c541ebb9a8d","sha256:6ef9e01cf6f56e1e9d7e57e000b521179f2eb8d4727eb0335ac82b9b7ca4e319"],"state_sha256":"b95d7216bbae8a6091010dfe5ccc8081212899a0013f38af7b0afe9c53f0ef80"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MUnCtf4KHIqUxNyL83kYPY3xDYAMmtXHYcKm2oUc+jhZWQ9yBH+BKlN6oXJsCydp7IWDUZ4aP3FdIHI054oiAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T08:09:28.184760Z","bundle_sha256":"0b049447110cb0ddb3fc12c9df19a9bb766181c69ba2316e37e7047501095c18"}}