{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VBQICDSSX7TPRSGP25KKWM4HNO","short_pith_number":"pith:VBQICDSS","canonical_record":{"source":{"id":"1703.08539","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-03-23T21:14:18Z","cross_cats_sorted":[],"title_canon_sha256":"0772bed8b3c1aedfbf881a78d088521456b0fb8ba642e74ed2054e5c41ce4400","abstract_canon_sha256":"e6bc21a0831b77bdcfe929fab0137f48de8c10608dadc0d25ffef181589221e6"},"schema_version":"1.0"},"canonical_sha256":"a860810e52bfe6f8c8cfd754ab33876bab5b92297bbb985773ad123010147e40","source":{"kind":"arxiv","id":"1703.08539","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08539","created_at":"2026-05-18T00:07:12Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08539v2","created_at":"2026-05-18T00:07:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08539","created_at":"2026-05-18T00:07:12Z"},{"alias_kind":"pith_short_12","alias_value":"VBQICDSSX7TP","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VBQICDSSX7TPRSGP","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VBQICDSS","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VBQICDSSX7TPRSGP25KKWM4HNO","target":"record","payload":{"canonical_record":{"source":{"id":"1703.08539","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-03-23T21:14:18Z","cross_cats_sorted":[],"title_canon_sha256":"0772bed8b3c1aedfbf881a78d088521456b0fb8ba642e74ed2054e5c41ce4400","abstract_canon_sha256":"e6bc21a0831b77bdcfe929fab0137f48de8c10608dadc0d25ffef181589221e6"},"schema_version":"1.0"},"canonical_sha256":"a860810e52bfe6f8c8cfd754ab33876bab5b92297bbb985773ad123010147e40","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:12.310725Z","signature_b64":"dnAFTlIQSp2AsVkivGYHnczGA8GBJIVjYfJh6+Ilb9ofwnqGb8OHN/REhpv3wLJUms6CBogcJ1ql1D977SWEBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a860810e52bfe6f8c8cfd754ab33876bab5b92297bbb985773ad123010147e40","last_reissued_at":"2026-05-18T00:07:12.310088Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:12.310088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.08539","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":"2026-05-18T00:07:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6dvhe3sJwk+bC58q5WlIzqT9BmnFi5YrNhFSsHUjcTtR1vJeUst24O70MJtARlkOf0qPxlebuZL0vcsMOjmfCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:04:18.784473Z"},"content_sha256":"1bd3823eda7398b5f36dfe3eab8db36aa9f8b179bb6f034a917e5cce45371060","schema_version":"1.0","event_id":"sha256:1bd3823eda7398b5f36dfe3eab8db36aa9f8b179bb6f034a917e5cce45371060"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VBQICDSSX7TPRSGP25KKWM4HNO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Effects of Inequality, Density, and Heterogeneous Residential Preferences on Urban Displacement and Metropolitan Structure: An Agent-Based Model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.soc-ph","authors_text":"Geoff Boeing","submitted_at":"2017-03-23T21:14:18Z","abstract_excerpt":"Urban displacement - when a household is forced to relocate due to conditions affecting its home or surroundings - often results from rising housing costs, particularly in wealthy, prosperous cities. However, its dynamics are complex and often difficult to understand. This paper presents an agent-based model of urban settlement, agglomeration, displacement, and sprawl. New settlements form around a spatial amenity that draws initial, poor settlers to subsist on the resource. As the settlement grows, subsequent settlers of varying income, skills, and interests are heterogeneously drawn to eithe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08539","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":"2026-05-18T00:07:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KuNE1IQ+J8k2MU0K9iENYbmfPY8VvW4kCq6gAzaBpkl/Z+F/xinj32Not+TJujj7lXEklk8zCJQR/J4tiewxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:04:18.785124Z"},"content_sha256":"b42a8b115d817c8802e0d1f555ab8089cee779250de5636f3c6c22ce8ea554eb","schema_version":"1.0","event_id":"sha256:b42a8b115d817c8802e0d1f555ab8089cee779250de5636f3c6c22ce8ea554eb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VBQICDSSX7TPRSGP25KKWM4HNO/bundle.json","state_url":"https://pith.science/pith/VBQICDSSX7TPRSGP25KKWM4HNO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VBQICDSSX7TPRSGP25KKWM4HNO/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":"2026-05-26T07:04:18Z","links":{"resolver":"https://pith.science/pith/VBQICDSSX7TPRSGP25KKWM4HNO","bundle":"https://pith.science/pith/VBQICDSSX7TPRSGP25KKWM4HNO/bundle.json","state":"https://pith.science/pith/VBQICDSSX7TPRSGP25KKWM4HNO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VBQICDSSX7TPRSGP25KKWM4HNO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VBQICDSSX7TPRSGP25KKWM4HNO","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":"e6bc21a0831b77bdcfe929fab0137f48de8c10608dadc0d25ffef181589221e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-03-23T21:14:18Z","title_canon_sha256":"0772bed8b3c1aedfbf881a78d088521456b0fb8ba642e74ed2054e5c41ce4400"},"schema_version":"1.0","source":{"id":"1703.08539","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08539","created_at":"2026-05-18T00:07:12Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08539v2","created_at":"2026-05-18T00:07:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08539","created_at":"2026-05-18T00:07:12Z"},{"alias_kind":"pith_short_12","alias_value":"VBQICDSSX7TP","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VBQICDSSX7TPRSGP","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VBQICDSS","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:b42a8b115d817c8802e0d1f555ab8089cee779250de5636f3c6c22ce8ea554eb","target":"graph","created_at":"2026-05-18T00:07:12Z","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":"Urban displacement - when a household is forced to relocate due to conditions affecting its home or surroundings - often results from rising housing costs, particularly in wealthy, prosperous cities. However, its dynamics are complex and often difficult to understand. This paper presents an agent-based model of urban settlement, agglomeration, displacement, and sprawl. New settlements form around a spatial amenity that draws initial, poor settlers to subsist on the resource. As the settlement grows, subsequent settlers of varying income, skills, and interests are heterogeneously drawn to eithe","authors_text":"Geoff Boeing","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-03-23T21:14:18Z","title":"The Effects of Inequality, Density, and Heterogeneous Residential Preferences on Urban Displacement and Metropolitan Structure: An Agent-Based Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08539","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":"sha256:1bd3823eda7398b5f36dfe3eab8db36aa9f8b179bb6f034a917e5cce45371060","target":"record","created_at":"2026-05-18T00:07:12Z","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":"e6bc21a0831b77bdcfe929fab0137f48de8c10608dadc0d25ffef181589221e6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2017-03-23T21:14:18Z","title_canon_sha256":"0772bed8b3c1aedfbf881a78d088521456b0fb8ba642e74ed2054e5c41ce4400"},"schema_version":"1.0","source":{"id":"1703.08539","kind":"arxiv","version":2}},"canonical_sha256":"a860810e52bfe6f8c8cfd754ab33876bab5b92297bbb985773ad123010147e40","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a860810e52bfe6f8c8cfd754ab33876bab5b92297bbb985773ad123010147e40","first_computed_at":"2026-05-18T00:07:12.310088Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:12.310088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dnAFTlIQSp2AsVkivGYHnczGA8GBJIVjYfJh6+Ilb9ofwnqGb8OHN/REhpv3wLJUms6CBogcJ1ql1D977SWEBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:12.310725Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.08539","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1bd3823eda7398b5f36dfe3eab8db36aa9f8b179bb6f034a917e5cce45371060","sha256:b42a8b115d817c8802e0d1f555ab8089cee779250de5636f3c6c22ce8ea554eb"],"state_sha256":"4a29acf97b476a21cbc1a4a32f01c330c989b2b38ad74781e1f1b2e2d1313a4d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FwiWdwxzVEdy3rAEd5nUdXOxpRKI+itJvzWrrZin6DomfUkDTeK/Hhm9ALx7xpgvQvLcdCAljRKbCZthSjfuCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T07:04:18.789197Z","bundle_sha256":"a8807b6b0e1504a27635280d800608b954dc85651209e5977fc33f6b607affd2"}}