{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:KKEFC6FW5I2G6OYVL6XYMB5LJZ","short_pith_number":"pith:KKEFC6FW","canonical_record":{"source":{"id":"1112.2020","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2011-12-09T05:19:57Z","cross_cats_sorted":[],"title_canon_sha256":"7d0ab9260629f8f7af1802b9386d1d284d8737e6a2eb1e0dce7eda4843bb1350","abstract_canon_sha256":"9097a8bc69f29719561552993afb529e7d8f7397c4161c96fa66ae498b32129b"},"schema_version":"1.0"},"canonical_sha256":"52885178b6ea346f3b155faf8607ab4e7d8396c3dd2ea38789c6bb6eacd7a038","source":{"kind":"arxiv","id":"1112.2020","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.2020","created_at":"2026-05-18T04:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"1112.2020v1","created_at":"2026-05-18T04:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.2020","created_at":"2026-05-18T04:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"KKEFC6FW5I2G","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"KKEFC6FW5I2G6OYV","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"KKEFC6FW","created_at":"2026-05-18T12:26:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:KKEFC6FW5I2G6OYVL6XYMB5LJZ","target":"record","payload":{"canonical_record":{"source":{"id":"1112.2020","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2011-12-09T05:19:57Z","cross_cats_sorted":[],"title_canon_sha256":"7d0ab9260629f8f7af1802b9386d1d284d8737e6a2eb1e0dce7eda4843bb1350","abstract_canon_sha256":"9097a8bc69f29719561552993afb529e7d8f7397c4161c96fa66ae498b32129b"},"schema_version":"1.0"},"canonical_sha256":"52885178b6ea346f3b155faf8607ab4e7d8396c3dd2ea38789c6bb6eacd7a038","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:06:44.342290Z","signature_b64":"qYu62CRjbHPeB6+OIkYIJc2j5NyUvqp636QnulqnK9klV0O7Bhvhw7GTW77E3x86nmpNjRQR7pFzUbTeCbLCCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"52885178b6ea346f3b155faf8607ab4e7d8396c3dd2ea38789c6bb6eacd7a038","last_reissued_at":"2026-05-18T04:06:44.341675Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:06:44.341675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.2020","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":"2026-05-18T04:06:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nM57VdiYQJHogDbfAALnAWj9imZWMGeOPfDo+/oy0BwklY9grsMOz85qOn40RLBNTZEFG+fd8kI0CXHMsNa6Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T10:56:19.158293Z"},"content_sha256":"4f4af6a866feaa66b216c1f46575fcae0641a9f04318f3b4e5d1c6627c9023db","schema_version":"1.0","event_id":"sha256:4f4af6a866feaa66b216c1f46575fcae0641a9f04318f3b4e5d1c6627c9023db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:KKEFC6FW5I2G6OYVL6XYMB5LJZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Differentially Private Trajectory Data Publication","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.DB","authors_text":"Benjamin C. M. Fung, Bipin C. Desai, Rui Chen","submitted_at":"2011-12-09T05:19:57Z","abstract_excerpt":"With the increasing prevalence of location-aware devices, trajectory data has been generated and collected in various application domains. Trajectory data carries rich information that is useful for many data analysis tasks. Yet, improper publishing and use of trajectory data could jeopardize individual privacy. However, it has been shown that existing privacy-preserving trajectory data publishing methods derived from partition-based privacy models, for example k-anonymity, are unable to provide sufficient privacy protection.\n  In this paper, motivated by the data publishing scenario at the So"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.2020","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":"2026-05-18T04:06:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pXMr53x5TUJFjlc3e7ej00kGs34gZLvWjtzgpOd0GIVhL6R8d/YQmMT8/cLasWs1NhOol6e0Yy1k8n6/hJCyBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T10:56:19.159801Z"},"content_sha256":"802eb38d50fc2987fa1bab4c731d4395e39913207f8d72272a12f5f3848d6cb7","schema_version":"1.0","event_id":"sha256:802eb38d50fc2987fa1bab4c731d4395e39913207f8d72272a12f5f3848d6cb7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ/bundle.json","state_url":"https://pith.science/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ/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":"2026-08-09T10:56:19Z","links":{"resolver":"https://pith.science/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ","bundle":"https://pith.science/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ/bundle.json","state":"https://pith.science/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KKEFC6FW5I2G6OYVL6XYMB5LJZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:KKEFC6FW5I2G6OYVL6XYMB5LJZ","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":"9097a8bc69f29719561552993afb529e7d8f7397c4161c96fa66ae498b32129b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2011-12-09T05:19:57Z","title_canon_sha256":"7d0ab9260629f8f7af1802b9386d1d284d8737e6a2eb1e0dce7eda4843bb1350"},"schema_version":"1.0","source":{"id":"1112.2020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.2020","created_at":"2026-05-18T04:06:44Z"},{"alias_kind":"arxiv_version","alias_value":"1112.2020v1","created_at":"2026-05-18T04:06:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.2020","created_at":"2026-05-18T04:06:44Z"},{"alias_kind":"pith_short_12","alias_value":"KKEFC6FW5I2G","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"KKEFC6FW5I2G6OYV","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"KKEFC6FW","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:802eb38d50fc2987fa1bab4c731d4395e39913207f8d72272a12f5f3848d6cb7","target":"graph","created_at":"2026-05-18T04:06:44Z","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":"With the increasing prevalence of location-aware devices, trajectory data has been generated and collected in various application domains. Trajectory data carries rich information that is useful for many data analysis tasks. Yet, improper publishing and use of trajectory data could jeopardize individual privacy. However, it has been shown that existing privacy-preserving trajectory data publishing methods derived from partition-based privacy models, for example k-anonymity, are unable to provide sufficient privacy protection.\n  In this paper, motivated by the data publishing scenario at the So","authors_text":"Benjamin C. M. Fung, Bipin C. Desai, Rui Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2011-12-09T05:19:57Z","title":"Differentially Private Trajectory Data Publication"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.2020","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":"sha256:4f4af6a866feaa66b216c1f46575fcae0641a9f04318f3b4e5d1c6627c9023db","target":"record","created_at":"2026-05-18T04:06:44Z","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":"9097a8bc69f29719561552993afb529e7d8f7397c4161c96fa66ae498b32129b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2011-12-09T05:19:57Z","title_canon_sha256":"7d0ab9260629f8f7af1802b9386d1d284d8737e6a2eb1e0dce7eda4843bb1350"},"schema_version":"1.0","source":{"id":"1112.2020","kind":"arxiv","version":1}},"canonical_sha256":"52885178b6ea346f3b155faf8607ab4e7d8396c3dd2ea38789c6bb6eacd7a038","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52885178b6ea346f3b155faf8607ab4e7d8396c3dd2ea38789c6bb6eacd7a038","first_computed_at":"2026-05-18T04:06:44.341675Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:06:44.341675Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qYu62CRjbHPeB6+OIkYIJc2j5NyUvqp636QnulqnK9klV0O7Bhvhw7GTW77E3x86nmpNjRQR7pFzUbTeCbLCCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:06:44.342290Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.2020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f4af6a866feaa66b216c1f46575fcae0641a9f04318f3b4e5d1c6627c9023db","sha256:802eb38d50fc2987fa1bab4c731d4395e39913207f8d72272a12f5f3848d6cb7"],"state_sha256":"33422089a265343f88bdf6d0205bd56e32fa2448563558152b491cf55137be90"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dj1kAN7+TvltoU34DigXVQl5jRBk12bIWZgpvd6E5LNh3J0NLnTOX65X1KGYOqH9tVuRnRkcVhEA1a0vcE3kBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T10:56:19.174427Z","bundle_sha256":"349fa5303a2fd1ea29098e5b630287abf05d315419e93af633cc2c40f805376a"}}