{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:QU3DLB4JTFS2WATYO4Y6JXV3ZS","short_pith_number":"pith:QU3DLB4J","canonical_record":{"source":{"id":"1712.06346","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-12-18T11:32:06Z","cross_cats_sorted":["cs.SI","q-bio.PE"],"title_canon_sha256":"05b47f44869fcc01e2d18308e741d814b14645ff415897366101d94a31bc96e2","abstract_canon_sha256":"5096e401c5931e94d86adb183261b1701a4365918a82f18a122221ea631f1796"},"schema_version":"1.0"},"canonical_sha256":"85363587899965ab02787731e4debbcca42ac281c048355f9b27664803098c76","source":{"kind":"arxiv","id":"1712.06346","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06346","created_at":"2026-05-18T00:16:21Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06346v1","created_at":"2026-05-18T00:16:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06346","created_at":"2026-05-18T00:16:21Z"},{"alias_kind":"pith_short_12","alias_value":"QU3DLB4JTFS2","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QU3DLB4JTFS2WATY","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QU3DLB4J","created_at":"2026-05-18T12:31:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:QU3DLB4JTFS2WATYO4Y6JXV3ZS","target":"record","payload":{"canonical_record":{"source":{"id":"1712.06346","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-12-18T11:32:06Z","cross_cats_sorted":["cs.SI","q-bio.PE"],"title_canon_sha256":"05b47f44869fcc01e2d18308e741d814b14645ff415897366101d94a31bc96e2","abstract_canon_sha256":"5096e401c5931e94d86adb183261b1701a4365918a82f18a122221ea631f1796"},"schema_version":"1.0"},"canonical_sha256":"85363587899965ab02787731e4debbcca42ac281c048355f9b27664803098c76","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:21.386768Z","signature_b64":"qUV2GwrDFveTAHINMAo2LP5zZO8Ob0e+Qr4aXf3JceR4X2K6PObLr1aLM+YMWhvff3ezLQTdPWe0qiVhT5j9BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85363587899965ab02787731e4debbcca42ac281c048355f9b27664803098c76","last_reissued_at":"2026-05-18T00:16:21.386360Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:21.386360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.06346","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":"2026-05-18T00:16:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hkLOy964k2PEt07xcq6iojAVvsMbFFQV7Owyyb24RlCDqPQ+fKqh+ROm39vYe3js/wdl31DG8qhf+TPYIYFiBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T23:49:31.240169Z"},"content_sha256":"a91809138446d5a591f1220800946b47e68cf6deffe12a08cc21ed447b48a496","schema_version":"1.0","event_id":"sha256:a91809138446d5a591f1220800946b47e68cf6deffe12a08cc21ed447b48a496"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:QU3DLB4JTFS2WATYO4Y6JXV3ZS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Can co-location be used as a proxy for face-to-face contacts?","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["cs.SI","q-bio.PE"],"primary_cat":"physics.soc-ph","authors_text":"Alain Barrat, Mathieu G\\'enois","submitted_at":"2017-12-18T11:32:06Z","abstract_excerpt":"Technological advances have led to a strong increase in the number of data collection efforts aimed at measuring co-presence of individuals at different spatial resolutions. It is however unclear how much co-presence data can inform us on actual face-to-face contacts, of particular interest to study the structure of a population in social groups or for use in data-driven models of information or epidemic spreading processes. Here, we address this issue by leveraging data sets containing high resolution face-to-face contacts as well as a coarser spatial localisation of individuals, both tempora"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06346","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":"2026-05-18T00:16:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OwR/FifkZKQP0+Q/bE3U0OvoS3UQuoyXWynQUiDnWQIeApMhEugTFkub/qaIOniokzTvsxX5h3urLP7eje/pCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T23:49:31.240533Z"},"content_sha256":"fd108a0af29d016d1f75768c177e0293010bd7f8ba0c7e10e3724aac7df3833c","schema_version":"1.0","event_id":"sha256:fd108a0af29d016d1f75768c177e0293010bd7f8ba0c7e10e3724aac7df3833c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS/bundle.json","state_url":"https://pith.science/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS/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":"2026-07-04T23:49:31Z","links":{"resolver":"https://pith.science/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS","bundle":"https://pith.science/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS/bundle.json","state":"https://pith.science/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QU3DLB4JTFS2WATYO4Y6JXV3ZS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:QU3DLB4JTFS2WATYO4Y6JXV3ZS","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":"5096e401c5931e94d86adb183261b1701a4365918a82f18a122221ea631f1796","cross_cats_sorted":["cs.SI","q-bio.PE"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-12-18T11:32:06Z","title_canon_sha256":"05b47f44869fcc01e2d18308e741d814b14645ff415897366101d94a31bc96e2"},"schema_version":"1.0","source":{"id":"1712.06346","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06346","created_at":"2026-05-18T00:16:21Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06346v1","created_at":"2026-05-18T00:16:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06346","created_at":"2026-05-18T00:16:21Z"},{"alias_kind":"pith_short_12","alias_value":"QU3DLB4JTFS2","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_16","alias_value":"QU3DLB4JTFS2WATY","created_at":"2026-05-18T12:31:39Z"},{"alias_kind":"pith_short_8","alias_value":"QU3DLB4J","created_at":"2026-05-18T12:31:39Z"}],"graph_snapshots":[{"event_id":"sha256:fd108a0af29d016d1f75768c177e0293010bd7f8ba0c7e10e3724aac7df3833c","target":"graph","created_at":"2026-05-18T00:16:21Z","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":"Technological advances have led to a strong increase in the number of data collection efforts aimed at measuring co-presence of individuals at different spatial resolutions. It is however unclear how much co-presence data can inform us on actual face-to-face contacts, of particular interest to study the structure of a population in social groups or for use in data-driven models of information or epidemic spreading processes. Here, we address this issue by leveraging data sets containing high resolution face-to-face contacts as well as a coarser spatial localisation of individuals, both tempora","authors_text":"Alain Barrat, Mathieu G\\'enois","cross_cats":["cs.SI","q-bio.PE"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-12-18T11:32:06Z","title":"Can co-location be used as a proxy for face-to-face contacts?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06346","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:a91809138446d5a591f1220800946b47e68cf6deffe12a08cc21ed447b48a496","target":"record","created_at":"2026-05-18T00:16:21Z","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":"5096e401c5931e94d86adb183261b1701a4365918a82f18a122221ea631f1796","cross_cats_sorted":["cs.SI","q-bio.PE"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-12-18T11:32:06Z","title_canon_sha256":"05b47f44869fcc01e2d18308e741d814b14645ff415897366101d94a31bc96e2"},"schema_version":"1.0","source":{"id":"1712.06346","kind":"arxiv","version":1}},"canonical_sha256":"85363587899965ab02787731e4debbcca42ac281c048355f9b27664803098c76","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85363587899965ab02787731e4debbcca42ac281c048355f9b27664803098c76","first_computed_at":"2026-05-18T00:16:21.386360Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:21.386360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qUV2GwrDFveTAHINMAo2LP5zZO8Ob0e+Qr4aXf3JceR4X2K6PObLr1aLM+YMWhvff3ezLQTdPWe0qiVhT5j9BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:21.386768Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.06346","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a91809138446d5a591f1220800946b47e68cf6deffe12a08cc21ed447b48a496","sha256:fd108a0af29d016d1f75768c177e0293010bd7f8ba0c7e10e3724aac7df3833c"],"state_sha256":"0eed6341c73a3f58bd81e684e7d9419cce6754913a0e88cb1f43f08e75e4ca93"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CqEQtMT/axaUgKO49HnHP81ztI38bWkvQb0goUsuPd8tlIqv4egBoQqlMlV2wxjZD5z2f/msk0rn3Dt4V9npDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T23:49:31.242692Z","bundle_sha256":"0442e4b8d9b2f84929489924cb9b2034e704fbd01b7fa8d9240ddb38ccb8b568"}}