{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:WQCHB2LBME5BTLEPB2SDV3BT6L","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":"cc0ee392fba27cac89d57172e36db7a6f428615c103ce5755854ceeca3c2ecde","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-06-04T14:37:43Z","title_canon_sha256":"f2115cfc7699f3dde04b71dae36813dd662095ae72a58734dc66eb4dc742b34d"},"schema_version":"1.0","source":{"id":"2506.04011","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.04011","created_at":"2026-07-05T11:15:55Z"},{"alias_kind":"arxiv_version","alias_value":"2506.04011v1","created_at":"2026-07-05T11:15:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.04011","created_at":"2026-07-05T11:15:55Z"},{"alias_kind":"pith_short_12","alias_value":"WQCHB2LBME5B","created_at":"2026-07-05T11:15:55Z"},{"alias_kind":"pith_short_16","alias_value":"WQCHB2LBME5BTLEP","created_at":"2026-07-05T11:15:55Z"},{"alias_kind":"pith_short_8","alias_value":"WQCHB2LB","created_at":"2026-07-05T11:15:55Z"}],"graph_snapshots":[{"event_id":"sha256:cf2382cdb562a8ec038ccbf387720cf89558462e7069d627d85d1424b7efcebe","target":"graph","created_at":"2026-07-05T11:15:55Z","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/2506.04011/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetotactic bacteria (MTB) are a diverse group of microorganisms that are able to biomineralize magnetic nanoparticles. Most MTB remain uncultured, making population-level characterization from natural environments difficult. We report the discovery of a new and diverse MTB-rich site in the Ogre River, Latvia, and present an integrated approach combining 16S rRNA sequencing, transmission electron microscopy, and novel open-source, automated image-based physical methods to characterize bacteria populations within environmental samples. We introduce a pipeline for cell velocimetry using a stat","authors_text":"Agnese Kokina, Andrejs Cebers, Damien Faivre, Davids Fridmanis, Dita Gudra, Guntars Kitenbergs, Janis Liepins, Mara Smite, Megija Lunge, Mihails Birjukovs, Mihaly Posfai, Mila Sirinelli-Kojadinovic, Sandrine Grosse","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-06-04T14:37:43Z","title":"Image-based physical characterization of magnetotactic bacteria from an environmental sample"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.04011","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:f1af8c2020f661174dd495c2a655eadcc3452343f26ab2af4316d8bbfcc12061","target":"record","created_at":"2026-07-05T11:15:55Z","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":"cc0ee392fba27cac89d57172e36db7a6f428615c103ce5755854ceeca3c2ecde","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2025-06-04T14:37:43Z","title_canon_sha256":"f2115cfc7699f3dde04b71dae36813dd662095ae72a58734dc66eb4dc742b34d"},"schema_version":"1.0","source":{"id":"2506.04011","kind":"arxiv","version":1}},"canonical_sha256":"b40470e961613a19ac8f0ea43aec33f2c17fdc6483dfa238876f61427f35ad2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b40470e961613a19ac8f0ea43aec33f2c17fdc6483dfa238876f61427f35ad2a","first_computed_at":"2026-07-05T11:15:55.339229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:15:55.339229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vuWSRmLGh6MaYa32zB1kOTnYlrPYso2AvXpNlf0UGCb11Fuo76AFyCy4KAdls7jym2Qa6B2uadlsdE4v2punCw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:15:55.339728Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.04011","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1af8c2020f661174dd495c2a655eadcc3452343f26ab2af4316d8bbfcc12061","sha256:cf2382cdb562a8ec038ccbf387720cf89558462e7069d627d85d1424b7efcebe"],"state_sha256":"dbafede448d7d8ae8468f7e561e0d92edcd5a6e5f0cadf2153f63b4ec6ba5862"}