{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OZL4UVGY37VTLHGNS4EOH4JMLZ","short_pith_number":"pith:OZL4UVGY","canonical_record":{"source":{"id":"2509.06973","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-08-25T19:29:33Z","cross_cats_sorted":[],"title_canon_sha256":"bb1bf23bff583224343181c77961eaadcabbf135279e8ad9eba7693f74d49b66","abstract_canon_sha256":"b874b0bc978e26e7240aef1c3e6eee22d10049380410f9f1488f5901b646676b"},"schema_version":"1.0"},"canonical_sha256":"7657ca54d8dfeb359ccd9708e3f12c5e51e41664eebee38e42582fb135267f71","source":{"kind":"arxiv","id":"2509.06973","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.06973","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"2509.06973v2","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06973","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"OZL4UVGY37VT","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"pith_short_16","alias_value":"OZL4UVGY37VTLHGN","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"pith_short_8","alias_value":"OZL4UVGY","created_at":"2026-07-05T12:08:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OZL4UVGY37VTLHGNS4EOH4JMLZ","target":"record","payload":{"canonical_record":{"source":{"id":"2509.06973","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-08-25T19:29:33Z","cross_cats_sorted":[],"title_canon_sha256":"bb1bf23bff583224343181c77961eaadcabbf135279e8ad9eba7693f74d49b66","abstract_canon_sha256":"b874b0bc978e26e7240aef1c3e6eee22d10049380410f9f1488f5901b646676b"},"schema_version":"1.0"},"canonical_sha256":"7657ca54d8dfeb359ccd9708e3f12c5e51e41664eebee38e42582fb135267f71","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:08:08.482394Z","signature_b64":"c3rawqZXEm9nu7IpPESVjf+FMkKexTuEADfUZsigPrZacJkjbksUBiA0No2zV+//BbcNit/eS0vtXmaR3UDZAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7657ca54d8dfeb359ccd9708e3f12c5e51e41664eebee38e42582fb135267f71","last_reissued_at":"2026-07-05T12:08:08.481757Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:08:08.481757Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.06973","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":"2026-07-05T12:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CpBMssEcgovE1vAr5dEeHGEkJEC//IBBik/e13FC8bljN0ctQtNSSxxn1VF+Pa1+3Q55mFH+g7YsH4ekmOqaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T08:49:49.296952Z"},"content_sha256":"dde860d1713b2e5ef4b688c368de9e0d3e51d2ffa3744b09f5dfd93bd55471dd","schema_version":"1.0","event_id":"sha256:dde860d1713b2e5ef4b688c368de9e0d3e51d2ffa3744b09f5dfd93bd55471dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OZL4UVGY37VTLHGNS4EOH4JMLZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Injection and Imaging of Achiral Microswimmers in Zebrafish","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.bio-ph","authors_text":"Biao Wang, U Kei Cheang","submitted_at":"2025-08-25T19:29:33Z","abstract_excerpt":"Achieving stable in vivo locomotion is essential for using magnetically actuated microswimmers for biomedical applications; however, while existing microswimmers have excellent motion control in vitro, their motion is greatly hindered inside living organisms. Moreover, previous work had only visually demonstrated in vivo motion through gradient pulling or rolling, but not swimming. This study investigated the injection and imaging of the achiral planar microswimmers (APMs) inside a live zebrafish embryo. The APMs can be actuated under a rotating magnetic field to generate a forward thrust at l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06973","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2509.06973/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":"2026-07-05T12:08:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6hLsPRC7U30Lb5UiighnurFgN7uAkaUFfgadbVZ1VM3Y4JnT0Afjy17SOo+vhnQNifF8YlRAJiTRrN1k+QqmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T08:49:49.297532Z"},"content_sha256":"6287d7645eb8409879af3c1ad9ecb400bd830351b4e7fcdddc0dd746b6ac9778","schema_version":"1.0","event_id":"sha256:6287d7645eb8409879af3c1ad9ecb400bd830351b4e7fcdddc0dd746b6ac9778"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ/bundle.json","state_url":"https://pith.science/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ/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":"2026-08-22T08:49:49Z","links":{"resolver":"https://pith.science/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ","bundle":"https://pith.science/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ/bundle.json","state":"https://pith.science/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OZL4UVGY37VTLHGNS4EOH4JMLZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OZL4UVGY37VTLHGNS4EOH4JMLZ","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":"b874b0bc978e26e7240aef1c3e6eee22d10049380410f9f1488f5901b646676b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-08-25T19:29:33Z","title_canon_sha256":"bb1bf23bff583224343181c77961eaadcabbf135279e8ad9eba7693f74d49b66"},"schema_version":"1.0","source":{"id":"2509.06973","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.06973","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"2509.06973v2","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.06973","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"OZL4UVGY37VT","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"pith_short_16","alias_value":"OZL4UVGY37VTLHGN","created_at":"2026-07-05T12:08:08Z"},{"alias_kind":"pith_short_8","alias_value":"OZL4UVGY","created_at":"2026-07-05T12:08:08Z"}],"graph_snapshots":[{"event_id":"sha256:6287d7645eb8409879af3c1ad9ecb400bd830351b4e7fcdddc0dd746b6ac9778","target":"graph","created_at":"2026-07-05T12:08:08Z","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/2509.06973/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Achieving stable in vivo locomotion is essential for using magnetically actuated microswimmers for biomedical applications; however, while existing microswimmers have excellent motion control in vitro, their motion is greatly hindered inside living organisms. Moreover, previous work had only visually demonstrated in vivo motion through gradient pulling or rolling, but not swimming. This study investigated the injection and imaging of the achiral planar microswimmers (APMs) inside a live zebrafish embryo. The APMs can be actuated under a rotating magnetic field to generate a forward thrust at l","authors_text":"Biao Wang, U Kei Cheang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-08-25T19:29:33Z","title":"Injection and Imaging of Achiral Microswimmers in Zebrafish"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.06973","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:dde860d1713b2e5ef4b688c368de9e0d3e51d2ffa3744b09f5dfd93bd55471dd","target":"record","created_at":"2026-07-05T12:08:08Z","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":"b874b0bc978e26e7240aef1c3e6eee22d10049380410f9f1488f5901b646676b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-08-25T19:29:33Z","title_canon_sha256":"bb1bf23bff583224343181c77961eaadcabbf135279e8ad9eba7693f74d49b66"},"schema_version":"1.0","source":{"id":"2509.06973","kind":"arxiv","version":2}},"canonical_sha256":"7657ca54d8dfeb359ccd9708e3f12c5e51e41664eebee38e42582fb135267f71","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7657ca54d8dfeb359ccd9708e3f12c5e51e41664eebee38e42582fb135267f71","first_computed_at":"2026-07-05T12:08:08.481757Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:08:08.481757Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c3rawqZXEm9nu7IpPESVjf+FMkKexTuEADfUZsigPrZacJkjbksUBiA0No2zV+//BbcNit/eS0vtXmaR3UDZAA==","signature_status":"signed_v1","signed_at":"2026-07-05T12:08:08.482394Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.06973","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dde860d1713b2e5ef4b688c368de9e0d3e51d2ffa3744b09f5dfd93bd55471dd","sha256:6287d7645eb8409879af3c1ad9ecb400bd830351b4e7fcdddc0dd746b6ac9778"],"state_sha256":"1021650df9bd4a5dd53bc96ae74c4cf29e7d123b00317eba15adbc425d83c537"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KGmQ1wyN4iSPXGcsX73pvJFr6Wjk+rRpbxZg2lSG2DAimVTRvuSRXl1VHXBDH5ymwaU3FIbfrYbpP+kCIMxoAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T08:49:49.302517Z","bundle_sha256":"3be8828ea353bedc12cc64642bb2e93cc6089bf467ab11279af0b64f69a0cbe1"}}