{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:AAAQQCZZUJQ674UAKMZ55ODS7L","short_pith_number":"pith:AAAQQCZZ","canonical_record":{"source":{"id":"1311.0680","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2013-11-04T12:46:08Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"cac83c7dbe41d33da33eca49d37031b67a02aed9a391e28d756a91ccd959790d","abstract_canon_sha256":"6fddd4ee3d22f3a5c4b641c4aded55de29198547588a0f3c7873d12544703608"},"schema_version":"1.0"},"canonical_sha256":"0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0","source":{"kind":"arxiv","id":"1311.0680","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.0680","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"arxiv_version","alias_value":"1311.0680v2","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.0680","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"pith_short_12","alias_value":"AAAQQCZZUJQ6","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AAAQQCZZUJQ674UA","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AAAQQCZZ","created_at":"2026-05-18T12:27:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:AAAQQCZZUJQ674UAKMZ55ODS7L","target":"record","payload":{"canonical_record":{"source":{"id":"1311.0680","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2013-11-04T12:46:08Z","cross_cats_sorted":["physics.soc-ph"],"title_canon_sha256":"cac83c7dbe41d33da33eca49d37031b67a02aed9a391e28d756a91ccd959790d","abstract_canon_sha256":"6fddd4ee3d22f3a5c4b641c4aded55de29198547588a0f3c7873d12544703608"},"schema_version":"1.0"},"canonical_sha256":"0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:35.490799Z","signature_b64":"6XRRLuAimP7lf0oDITqNRDy4XFBnMWJfi4Zr6VNXRO2jDTzjcWV6yHMDvVVGF26YhSXKLc+k1419tLCGy2pVDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0","last_reissued_at":"2026-05-18T02:57:35.490102Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:35.490102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1311.0680","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:57:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pIUahiuzLD/DLfB552ZbPCvdGrAy4gDdSDp6WdZsvF56RfeYd/sj6s7BdUtOlInDcHaiZCa2FGp+Vwjx8HE0AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T11:42:56.637999Z"},"content_sha256":"5d6e2e0ae47690243dea9c3bc490859af7cd8058ae1f4b24d7e022880c372bc6","schema_version":"1.0","event_id":"sha256:5d6e2e0ae47690243dea9c3bc490859af7cd8058ae1f4b24d7e022880c372bc6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:AAAQQCZZUJQ674UAKMZ55ODS7L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geo-located Twitter as the proxy for global mobility patterns","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.soc-ph"],"primary_cat":"cs.SI","authors_text":"Bartosz Hawelka, Carlo Ratti, Euro Beinat, Izabela Sitko, Pavlos Kazakopoulos, Stanislav Sobolevsky","submitted_at":"2013-11-04T12:46:08Z","abstract_excerpt":"In the advent of a pervasive presence of location sharing services researchers gained an unprecedented access to the direct records of human activity in space and time. This paper analyses geo-located Twitter messages in order to uncover global patterns of human mobility. Based on a dataset of almost a billion tweets recorded in 2012 we estimate volumes of international travelers in respect to their country of residence. We examine mobility profiles of different nations looking at the characteristics such as mobility rate, radius of gyration, diversity of destinations and a balance of the infl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.0680","kind":"arxiv","version":2},"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":"2026-05-18T02:57:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FaEH/VE3AVn6kBLzrpgFlZCv5XZt6V2MLjXTXM+zberz8epH3WtSK7uH1aVEUHDCw6d5oTklNoHnxwDCVM+8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T11:42:56.638366Z"},"content_sha256":"c5a854359bc3ece710aeeb5f31cfed6bb045d3a11c2d9f9182dc91cfc8af0c4e","schema_version":"1.0","event_id":"sha256:c5a854359bc3ece710aeeb5f31cfed6bb045d3a11c2d9f9182dc91cfc8af0c4e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AAAQQCZZUJQ674UAKMZ55ODS7L/bundle.json","state_url":"https://pith.science/pith/AAAQQCZZUJQ674UAKMZ55ODS7L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AAAQQCZZUJQ674UAKMZ55ODS7L/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":"2026-06-20T11:42:56Z","links":{"resolver":"https://pith.science/pith/AAAQQCZZUJQ674UAKMZ55ODS7L","bundle":"https://pith.science/pith/AAAQQCZZUJQ674UAKMZ55ODS7L/bundle.json","state":"https://pith.science/pith/AAAQQCZZUJQ674UAKMZ55ODS7L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AAAQQCZZUJQ674UAKMZ55ODS7L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:AAAQQCZZUJQ674UAKMZ55ODS7L","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":"6fddd4ee3d22f3a5c4b641c4aded55de29198547588a0f3c7873d12544703608","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2013-11-04T12:46:08Z","title_canon_sha256":"cac83c7dbe41d33da33eca49d37031b67a02aed9a391e28d756a91ccd959790d"},"schema_version":"1.0","source":{"id":"1311.0680","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.0680","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"arxiv_version","alias_value":"1311.0680v2","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.0680","created_at":"2026-05-18T02:57:35Z"},{"alias_kind":"pith_short_12","alias_value":"AAAQQCZZUJQ6","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_16","alias_value":"AAAQQCZZUJQ674UA","created_at":"2026-05-18T12:27:38Z"},{"alias_kind":"pith_short_8","alias_value":"AAAQQCZZ","created_at":"2026-05-18T12:27:38Z"}],"graph_snapshots":[{"event_id":"sha256:c5a854359bc3ece710aeeb5f31cfed6bb045d3a11c2d9f9182dc91cfc8af0c4e","target":"graph","created_at":"2026-05-18T02:57:35Z","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":"In the advent of a pervasive presence of location sharing services researchers gained an unprecedented access to the direct records of human activity in space and time. This paper analyses geo-located Twitter messages in order to uncover global patterns of human mobility. Based on a dataset of almost a billion tweets recorded in 2012 we estimate volumes of international travelers in respect to their country of residence. We examine mobility profiles of different nations looking at the characteristics such as mobility rate, radius of gyration, diversity of destinations and a balance of the infl","authors_text":"Bartosz Hawelka, Carlo Ratti, Euro Beinat, Izabela Sitko, Pavlos Kazakopoulos, Stanislav Sobolevsky","cross_cats":["physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2013-11-04T12:46:08Z","title":"Geo-located Twitter as the proxy for global mobility patterns"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.0680","kind":"arxiv","version":2},"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":"sha256:5d6e2e0ae47690243dea9c3bc490859af7cd8058ae1f4b24d7e022880c372bc6","target":"record","created_at":"2026-05-18T02:57:35Z","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":"6fddd4ee3d22f3a5c4b641c4aded55de29198547588a0f3c7873d12544703608","cross_cats_sorted":["physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2013-11-04T12:46:08Z","title_canon_sha256":"cac83c7dbe41d33da33eca49d37031b67a02aed9a391e28d756a91ccd959790d"},"schema_version":"1.0","source":{"id":"1311.0680","kind":"arxiv","version":2}},"canonical_sha256":"0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0001080b39a261eff2805333deb872fac8b824f869bffac690209d2e342a89a0","first_computed_at":"2026-05-18T02:57:35.490102Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:35.490102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6XRRLuAimP7lf0oDITqNRDy4XFBnMWJfi4Zr6VNXRO2jDTzjcWV6yHMDvVVGF26YhSXKLc+k1419tLCGy2pVDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:35.490799Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.0680","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d6e2e0ae47690243dea9c3bc490859af7cd8058ae1f4b24d7e022880c372bc6","sha256:c5a854359bc3ece710aeeb5f31cfed6bb045d3a11c2d9f9182dc91cfc8af0c4e"],"state_sha256":"37644c4507f9c01e27f2348e7889328d48456bb1f0480a0ea5cf07de4d278bbc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZTPqm0XmK48kuSl8bzq/acQ3BQVufEKB7EH7Icd/hnOUEv26szs9R9VJpdEAUes3P1OWIZ7LA3iBs36Ufgb2Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T11:42:56.640265Z","bundle_sha256":"7347e8048afa80608d32040c0b49909240581b7ce0f73be7f2dfec4ce8267292"}}