{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:HBIXYMK5NAOY4VTDIN6OD6TOWM","short_pith_number":"pith:HBIXYMK5","canonical_record":{"source":{"id":"1501.06814","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-01-27T16:42:03Z","cross_cats_sorted":["cs.CY","physics.data-an"],"title_canon_sha256":"a04ba4e43822e0753f06b1dffc3e2e51e7006338ce7a9804024f182b2ae5f7c2","abstract_canon_sha256":"b3baa10864e622a540ce0173d12483d3b61c35c8d61bd22f628a9394e63b05b3"},"schema_version":"1.0"},"canonical_sha256":"38517c315d681d8e5663437ce1fa6eb32edaf066ae5ae26d2d1ad5aeb2d51151","source":{"kind":"arxiv","id":"1501.06814","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06814","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06814v3","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06814","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"pith_short_12","alias_value":"HBIXYMK5NAOY","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"HBIXYMK5NAOY4VTD","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"HBIXYMK5","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:HBIXYMK5NAOY4VTDIN6OD6TOWM","target":"record","payload":{"canonical_record":{"source":{"id":"1501.06814","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-01-27T16:42:03Z","cross_cats_sorted":["cs.CY","physics.data-an"],"title_canon_sha256":"a04ba4e43822e0753f06b1dffc3e2e51e7006338ce7a9804024f182b2ae5f7c2","abstract_canon_sha256":"b3baa10864e622a540ce0173d12483d3b61c35c8d61bd22f628a9394e63b05b3"},"schema_version":"1.0"},"canonical_sha256":"38517c315d681d8e5663437ce1fa6eb32edaf066ae5ae26d2d1ad5aeb2d51151","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:43.385588Z","signature_b64":"zFxY+2kciuBuZm64gMQHa27l95yi/+CimQ+py+mXjoWQDJ81V08/B/I1t+O5fDDmOy3MnGCcjchayg/emwVOBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"38517c315d681d8e5663437ce1fa6eb32edaf066ae5ae26d2d1ad5aeb2d51151","last_reissued_at":"2026-05-18T01:36:43.385087Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:43.385087Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.06814","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:36:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"107zSTm5ItUoREPlcEySyEoGLVnAzNi9CSHPM4iCxT7sfP8lnSfNNsMHePNbfQBUjde73ndoGSM1KGpTLjICCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T13:23:36.953162Z"},"content_sha256":"93d56bb1069db211fd1eccf6a9b434e038fe34f8ab556bdac1fe5129972c9c91","schema_version":"1.0","event_id":"sha256:93d56bb1069db211fd1eccf6a9b434e038fe34f8ab556bdac1fe5129972c9c91"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:HBIXYMK5NAOY4VTDIN6OD6TOWM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spatio-Temporal Techniques for User Identification by means of GPS Mobility Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY","physics.data-an"],"primary_cat":"cs.CR","authors_text":"James Walker, Luca Rossi, Mirco Musolesi","submitted_at":"2015-01-27T16:42:03Z","abstract_excerpt":"One of the greatest concerns related to the popularity of GPS-enabled devices and applications is the increasing availability of the personal location information generated by them and shared with application and service providers. Moreover, people tend to have regular routines and be characterized by a set of \"significant places\", thus making it possible to identify a user from his/her mobility data.\n  In this paper we present a series of techniques for identifying individuals from their GPS movements. More specifically, we study the uniqueness of GPS information for three popular datasets, a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06814","kind":"arxiv","version":3},"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":"2026-05-18T01:36:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hjJ56DnlKFozlJOJnzYWdqyzEu2CWMcCB4JdC6+yPtcTN81n7XznXoctNExf9d17pqqdt3bpfsgCLrRslYSuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T13:23:36.953829Z"},"content_sha256":"c4750d157e23be59aec9caed87791ef47dbe48e3daf1dc913e6257fac0e9e9e1","schema_version":"1.0","event_id":"sha256:c4750d157e23be59aec9caed87791ef47dbe48e3daf1dc913e6257fac0e9e9e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM/bundle.json","state_url":"https://pith.science/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM/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":"2026-06-08T13:23:36Z","links":{"resolver":"https://pith.science/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM","bundle":"https://pith.science/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM/bundle.json","state":"https://pith.science/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HBIXYMK5NAOY4VTDIN6OD6TOWM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:HBIXYMK5NAOY4VTDIN6OD6TOWM","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":"b3baa10864e622a540ce0173d12483d3b61c35c8d61bd22f628a9394e63b05b3","cross_cats_sorted":["cs.CY","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-01-27T16:42:03Z","title_canon_sha256":"a04ba4e43822e0753f06b1dffc3e2e51e7006338ce7a9804024f182b2ae5f7c2"},"schema_version":"1.0","source":{"id":"1501.06814","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.06814","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"arxiv_version","alias_value":"1501.06814v3","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.06814","created_at":"2026-05-18T01:36:43Z"},{"alias_kind":"pith_short_12","alias_value":"HBIXYMK5NAOY","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"HBIXYMK5NAOY4VTD","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"HBIXYMK5","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:c4750d157e23be59aec9caed87791ef47dbe48e3daf1dc913e6257fac0e9e9e1","target":"graph","created_at":"2026-05-18T01:36:43Z","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":"One of the greatest concerns related to the popularity of GPS-enabled devices and applications is the increasing availability of the personal location information generated by them and shared with application and service providers. Moreover, people tend to have regular routines and be characterized by a set of \"significant places\", thus making it possible to identify a user from his/her mobility data.\n  In this paper we present a series of techniques for identifying individuals from their GPS movements. More specifically, we study the uniqueness of GPS information for three popular datasets, a","authors_text":"James Walker, Luca Rossi, Mirco Musolesi","cross_cats":["cs.CY","physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-01-27T16:42:03Z","title":"Spatio-Temporal Techniques for User Identification by means of GPS Mobility Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.06814","kind":"arxiv","version":3},"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":"sha256:93d56bb1069db211fd1eccf6a9b434e038fe34f8ab556bdac1fe5129972c9c91","target":"record","created_at":"2026-05-18T01:36:43Z","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":"b3baa10864e622a540ce0173d12483d3b61c35c8d61bd22f628a9394e63b05b3","cross_cats_sorted":["cs.CY","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2015-01-27T16:42:03Z","title_canon_sha256":"a04ba4e43822e0753f06b1dffc3e2e51e7006338ce7a9804024f182b2ae5f7c2"},"schema_version":"1.0","source":{"id":"1501.06814","kind":"arxiv","version":3}},"canonical_sha256":"38517c315d681d8e5663437ce1fa6eb32edaf066ae5ae26d2d1ad5aeb2d51151","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"38517c315d681d8e5663437ce1fa6eb32edaf066ae5ae26d2d1ad5aeb2d51151","first_computed_at":"2026-05-18T01:36:43.385087Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:43.385087Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zFxY+2kciuBuZm64gMQHa27l95yi/+CimQ+py+mXjoWQDJ81V08/B/I1t+O5fDDmOy3MnGCcjchayg/emwVOBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:43.385588Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.06814","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:93d56bb1069db211fd1eccf6a9b434e038fe34f8ab556bdac1fe5129972c9c91","sha256:c4750d157e23be59aec9caed87791ef47dbe48e3daf1dc913e6257fac0e9e9e1"],"state_sha256":"eafef542f8c19bc4719c15eaeeaf6a2f03d2d9d151d360062ce4ec5fae5d451d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NbsUvFJm/IvHAGgZoN1/D0yQkP05d2IEserHOhR/yYFT/YPljZZmrLdcDuHtaDGd8NndlJ9nibzCDAmmttJICw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T13:23:36.957031Z","bundle_sha256":"3c02920e54aaa418eb77aec03a86226296deb457e8804629ac901e0656ac0174"}}