{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XDZN6GVUVZZ3WSRURX6GN7CFTX","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":"f0b5a6c95d6084770c202a3015fddf9a2cbbe5d5cc65990fcd527fe01272bf72","cross_cats_sorted":["cs.CY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2020-04-21T15:21:30Z","title_canon_sha256":"e029bfb24c5001f276831dbcd345a9ad1a7e34f0307012258b8b0700fa821b57"},"schema_version":"1.0","source":{"id":"2004.10100","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.10100","created_at":"2026-07-05T04:40:22Z"},{"alias_kind":"arxiv_version","alias_value":"2004.10100v1","created_at":"2026-07-05T04:40:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.10100","created_at":"2026-07-05T04:40:22Z"},{"alias_kind":"pith_short_12","alias_value":"XDZN6GVUVZZ3","created_at":"2026-07-05T04:40:22Z"},{"alias_kind":"pith_short_16","alias_value":"XDZN6GVUVZZ3WSRU","created_at":"2026-07-05T04:40:22Z"},{"alias_kind":"pith_short_8","alias_value":"XDZN6GVU","created_at":"2026-07-05T04:40:22Z"}],"graph_snapshots":[{"event_id":"sha256:e3d988532d556be96291325c3e19d403423d39d8fba903b19ba38a6939f1fd17","target":"graph","created_at":"2026-07-05T04:40:22Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.10100/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"[Background] Two clusters of coronavirus disease 2019 (COVID-19) were confirmed in Hokkaido, Japan in February 2020. To capture the clusters, this study employs Web search query logs and user location information from smartphones. [Material and Methods] First, we anonymously identified smartphone users who used a Web search engine (Yahoo! JAPAN Search) for the COVID-19 or its symptoms via its companion application for smartphones (Yahoo Japan App). We regard these searchers as Web searchers who are suspicious of their own COVID-19 infection (WSSCI). Second, we extracted the location of the WSS","authors_text":"Eiji Aramaki, Kota Tsubouchi, Shohei Hisada, Shoko Wakamiya, Shuntaro Yada, Sumio Fujita, Taichi Murayama","cross_cats":["cs.CY"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2020-04-21T15:21:30Z","title":"Syndromic surveillance using search query logs and user location information from smartphones against COVID-19 clusters in Japan"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.10100","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:d72e0162f1dcda68c1f9bb80455c81dd0e7190e66400aef9b51f2d42aab9398c","target":"record","created_at":"2026-07-05T04:40:22Z","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":"f0b5a6c95d6084770c202a3015fddf9a2cbbe5d5cc65990fcd527fe01272bf72","cross_cats_sorted":["cs.CY"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IR","submitted_at":"2020-04-21T15:21:30Z","title_canon_sha256":"e029bfb24c5001f276831dbcd345a9ad1a7e34f0307012258b8b0700fa821b57"},"schema_version":"1.0","source":{"id":"2004.10100","kind":"arxiv","version":1}},"canonical_sha256":"b8f2df1ab4ae73bb4a348dfc66fc459dd6b527c226ca182d4c009b60613fe50a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b8f2df1ab4ae73bb4a348dfc66fc459dd6b527c226ca182d4c009b60613fe50a","first_computed_at":"2026-07-05T04:40:22.127638Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:40:22.127638Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zWV50Vo11koTSaZ0Z9OpVYhtNDLo5RXTLHopzkE4gvQJZSTg428VYkJR7/5lg3ZkDswzUfTqrkMMNk3AQDZbCA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:40:22.128145Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.10100","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d72e0162f1dcda68c1f9bb80455c81dd0e7190e66400aef9b51f2d42aab9398c","sha256:e3d988532d556be96291325c3e19d403423d39d8fba903b19ba38a6939f1fd17"],"state_sha256":"415fd1903137237a8c0d7784f3624725fb88ff1627336f1eca11c0ad0f1c3a58"}