{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:GST52JVERGMUXYWUBPRQIO6BEE","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":"7c345ff8bcea3119f36a3e5a0a8b696a77af0a22f45fbc0acb9cd564720b41a4","cross_cats_sorted":["cs.CR"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.DB","submitted_at":"2021-08-04T14:37:01Z","title_canon_sha256":"7998c2623470846e5a66a5c6deb52a70fbf0bf3f289b2104e8caa5766f596ecb"},"schema_version":"1.0","source":{"id":"2108.02084","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.02084","created_at":"2026-07-05T03:07:29Z"},{"alias_kind":"arxiv_version","alias_value":"2108.02084v1","created_at":"2026-07-05T03:07:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.02084","created_at":"2026-07-05T03:07:29Z"},{"alias_kind":"pith_short_12","alias_value":"GST52JVERGMU","created_at":"2026-07-05T03:07:29Z"},{"alias_kind":"pith_short_16","alias_value":"GST52JVERGMUXYWU","created_at":"2026-07-05T03:07:29Z"},{"alias_kind":"pith_short_8","alias_value":"GST52JVE","created_at":"2026-07-05T03:07:29Z"}],"graph_snapshots":[{"event_id":"sha256:289f7f7bcf47685668f7bd6a2092ceb2bc823e8d477cb1315710f9b534300dde","target":"graph","created_at":"2026-07-05T03:07:29Z","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/2108.02084/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sharing trajectories is beneficial for many real-world applications, such as managing disease spread through contact tracing and tailoring public services to a population's travel patterns. However, public concern over privacy and data protection has limited the extent to which this data is shared. Local differential privacy enables data sharing in which users share a perturbed version of their data, but existing mechanisms fail to incorporate user-independent public knowledge (e.g., business locations and opening times, public transport schedules, geo-located tweets). This limitation makes me","authors_text":"Divesh Srivastava, Graham Cormode, Hakan Ferhatosmanoglu, Teddy Cunningham","cross_cats":["cs.CR"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.DB","submitted_at":"2021-08-04T14:37:01Z","title":"Real-World Trajectory Sharing with Local Differential Privacy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.02084","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":"sha256:200b1dcc3dfe0c1ea9de9fadec56a3ee2a2333dc59966593776662c584aaaf55","target":"record","created_at":"2026-07-05T03:07:29Z","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":"7c345ff8bcea3119f36a3e5a0a8b696a77af0a22f45fbc0acb9cd564720b41a4","cross_cats_sorted":["cs.CR"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.DB","submitted_at":"2021-08-04T14:37:01Z","title_canon_sha256":"7998c2623470846e5a66a5c6deb52a70fbf0bf3f289b2104e8caa5766f596ecb"},"schema_version":"1.0","source":{"id":"2108.02084","kind":"arxiv","version":1}},"canonical_sha256":"34a7dd26a489994be2d40be3043bc12138d088b3dede838fee7c502ecc3b39cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34a7dd26a489994be2d40be3043bc12138d088b3dede838fee7c502ecc3b39cd","first_computed_at":"2026-07-05T03:07:29.528401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:07:29.528401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cyG+nFOeoONkQPuieDTD24yfkOiCADiHVhkTntzEESBuYdh9701Sak1lIbF/sCrL1K7il4y6+skWscHP8MUiCw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:07:29.528863Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.02084","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:200b1dcc3dfe0c1ea9de9fadec56a3ee2a2333dc59966593776662c584aaaf55","sha256:289f7f7bcf47685668f7bd6a2092ceb2bc823e8d477cb1315710f9b534300dde"],"state_sha256":"1b084f6902862307164381860526e6d04afd98f057749b3893178a14cef30bf9"}