{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:FF4TNG2MGTAJOH4GHMSCCQN43P","short_pith_number":"pith:FF4TNG2M","canonical_record":{"source":{"id":"1505.05129","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-19T19:42:10Z","cross_cats_sorted":["q-bio.BM"],"title_canon_sha256":"75e936db7264f038eabfb4ec16ed45d186bfed74b0de91ba3a75de188164ec10","abstract_canon_sha256":"2a2673de123e40624e69e631d72beea9e08927bb8904fa601603c1593e3f3967"},"schema_version":"1.0"},"canonical_sha256":"2979369b4c34c0971f863b242141bcdbd0fa3431f6d4f92c0591c1f2bdbdb065","source":{"kind":"arxiv","id":"1505.05129","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.05129","created_at":"2026-05-18T02:05:22Z"},{"alias_kind":"arxiv_version","alias_value":"1505.05129v1","created_at":"2026-05-18T02:05:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.05129","created_at":"2026-05-18T02:05:22Z"},{"alias_kind":"pith_short_12","alias_value":"FF4TNG2MGTAJ","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FF4TNG2MGTAJOH4G","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FF4TNG2M","created_at":"2026-05-18T12:29:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:FF4TNG2MGTAJOH4GHMSCCQN43P","target":"record","payload":{"canonical_record":{"source":{"id":"1505.05129","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-19T19:42:10Z","cross_cats_sorted":["q-bio.BM"],"title_canon_sha256":"75e936db7264f038eabfb4ec16ed45d186bfed74b0de91ba3a75de188164ec10","abstract_canon_sha256":"2a2673de123e40624e69e631d72beea9e08927bb8904fa601603c1593e3f3967"},"schema_version":"1.0"},"canonical_sha256":"2979369b4c34c0971f863b242141bcdbd0fa3431f6d4f92c0591c1f2bdbdb065","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:22.109580Z","signature_b64":"YPWV3AUXAU1K+hu8sc6aCc9Z5QRGVcTMGV8ykNSsl9mDXTBDVj/cL5/E70Vgqirl7Lr3DZbEcP8Bc2oX5027DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2979369b4c34c0971f863b242141bcdbd0fa3431f6d4f92c0591c1f2bdbdb065","last_reissued_at":"2026-05-18T02:05:22.108930Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:22.108930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.05129","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":"2026-05-18T02:05:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VGLXL+YqRwmBHvbsNh56pgI2g3RzJE+iM2E65sO7yBnkW6qb579lq+fRgXvBi8m9RxTDVqC1+3IWc8THuCReBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:30:43.933410Z"},"content_sha256":"33960efb8ef39a1555d7cc548226f50a1dc91615c0a4376305689888049367fc","schema_version":"1.0","event_id":"sha256:33960efb8ef39a1555d7cc548226f50a1dc91615c0a4376305689888049367fc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:FF4TNG2MGTAJOH4GHMSCCQN43P","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The biomechanical and structural properties of CS2 fimbriae","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["q-bio.BM"],"primary_cat":"physics.bio-ph","authors_text":"Bhupender Singh, Esther Bullitt, Johan Zakrisson, Magnus Andersson, Narges Mortezaei","submitted_at":"2015-05-19T19:42:10Z","abstract_excerpt":"Enterotoxigenic Escherichia coli (ETEC) are a major cause of diarrhea worldwide, and infection of children in underdeveloped countries often leads to high mortality rates. Isolated ETEC express a plethora of colonization factors (fimbriae/pili), of which CFA/I and CFA/II that are assembled via the alternate chaperone pathway (ACP), are amongst the most common. Fimbriae are filamentous structures, whose shafts are primarily composed of helically arranged single pilin-protein subunits, with a unique biomechanical capability allowing them to unwind and rewind. A sustained ETEC infection, under ad"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.05129","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":"2026-05-18T02:05:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fDYsi92qEwfG2QJpbei5sRwfEI+2Ag+kSTbn57yivJMbQYjface6IxD9Jv78UAfjPafqtSaqRYkKSqFvF2C5BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T00:30:43.933764Z"},"content_sha256":"0f10d44913c66756805d3ad6682bc90315a293c58edcf4c30cfc8d6f71cfbaef","schema_version":"1.0","event_id":"sha256:0f10d44913c66756805d3ad6682bc90315a293c58edcf4c30cfc8d6f71cfbaef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FF4TNG2MGTAJOH4GHMSCCQN43P/bundle.json","state_url":"https://pith.science/pith/FF4TNG2MGTAJOH4GHMSCCQN43P/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FF4TNG2MGTAJOH4GHMSCCQN43P/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":"2026-06-12T00:30:43Z","links":{"resolver":"https://pith.science/pith/FF4TNG2MGTAJOH4GHMSCCQN43P","bundle":"https://pith.science/pith/FF4TNG2MGTAJOH4GHMSCCQN43P/bundle.json","state":"https://pith.science/pith/FF4TNG2MGTAJOH4GHMSCCQN43P/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FF4TNG2MGTAJOH4GHMSCCQN43P/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:FF4TNG2MGTAJOH4GHMSCCQN43P","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":"2a2673de123e40624e69e631d72beea9e08927bb8904fa601603c1593e3f3967","cross_cats_sorted":["q-bio.BM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-19T19:42:10Z","title_canon_sha256":"75e936db7264f038eabfb4ec16ed45d186bfed74b0de91ba3a75de188164ec10"},"schema_version":"1.0","source":{"id":"1505.05129","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.05129","created_at":"2026-05-18T02:05:22Z"},{"alias_kind":"arxiv_version","alias_value":"1505.05129v1","created_at":"2026-05-18T02:05:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.05129","created_at":"2026-05-18T02:05:22Z"},{"alias_kind":"pith_short_12","alias_value":"FF4TNG2MGTAJ","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"FF4TNG2MGTAJOH4G","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"FF4TNG2M","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:0f10d44913c66756805d3ad6682bc90315a293c58edcf4c30cfc8d6f71cfbaef","target":"graph","created_at":"2026-05-18T02:05:22Z","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":"Enterotoxigenic Escherichia coli (ETEC) are a major cause of diarrhea worldwide, and infection of children in underdeveloped countries often leads to high mortality rates. Isolated ETEC express a plethora of colonization factors (fimbriae/pili), of which CFA/I and CFA/II that are assembled via the alternate chaperone pathway (ACP), are amongst the most common. Fimbriae are filamentous structures, whose shafts are primarily composed of helically arranged single pilin-protein subunits, with a unique biomechanical capability allowing them to unwind and rewind. A sustained ETEC infection, under ad","authors_text":"Bhupender Singh, Esther Bullitt, Johan Zakrisson, Magnus Andersson, Narges Mortezaei","cross_cats":["q-bio.BM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-19T19:42:10Z","title":"The biomechanical and structural properties of CS2 fimbriae"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.05129","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":"sha256:33960efb8ef39a1555d7cc548226f50a1dc91615c0a4376305689888049367fc","target":"record","created_at":"2026-05-18T02:05:22Z","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":"2a2673de123e40624e69e631d72beea9e08927bb8904fa601603c1593e3f3967","cross_cats_sorted":["q-bio.BM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2015-05-19T19:42:10Z","title_canon_sha256":"75e936db7264f038eabfb4ec16ed45d186bfed74b0de91ba3a75de188164ec10"},"schema_version":"1.0","source":{"id":"1505.05129","kind":"arxiv","version":1}},"canonical_sha256":"2979369b4c34c0971f863b242141bcdbd0fa3431f6d4f92c0591c1f2bdbdb065","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2979369b4c34c0971f863b242141bcdbd0fa3431f6d4f92c0591c1f2bdbdb065","first_computed_at":"2026-05-18T02:05:22.108930Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:22.108930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YPWV3AUXAU1K+hu8sc6aCc9Z5QRGVcTMGV8ykNSsl9mDXTBDVj/cL5/E70Vgqirl7Lr3DZbEcP8Bc2oX5027DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:22.109580Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.05129","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33960efb8ef39a1555d7cc548226f50a1dc91615c0a4376305689888049367fc","sha256:0f10d44913c66756805d3ad6682bc90315a293c58edcf4c30cfc8d6f71cfbaef"],"state_sha256":"8897a5bbe79c83189bca9e5b6dc07659ab546a42b967ebf26b8e8b6d023cdd8f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"paJYx2Jp0rrdhICstxR14AS82a6Q5v87DYlKAS22GpbAdciPF3NZAwSE4n9ZI3K3CIVVJ0NoShkKjOI8jUEOAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T00:30:43.935688Z","bundle_sha256":"0c7a8938c1ff3b605780f07115b79632b686716da365ce612f161e90637fa738"}}