{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2UCVJ5KXWIBQ6I72VDQYPN3ETL","short_pith_number":"pith:2UCVJ5KX","canonical_record":{"source":{"id":"1209.0835","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-09-05T01:01:47Z","cross_cats_sorted":["cs.CY","physics.soc-ph"],"title_canon_sha256":"7d32cc882e5a156640538416785eb815bc39f3f517978ab2c500e41eca719842","abstract_canon_sha256":"61752ab5dfa932f2b163901d6b6b4189a2b605c69aa3f7953b88b3abb378f2da"},"schema_version":"1.0"},"canonical_sha256":"d50554f557b2030f23faa8e187b7649af285c7b0298f4045b7fe57283a99a284","source":{"kind":"arxiv","id":"1209.0835","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0835","created_at":"2026-05-18T03:45:21Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0835v4","created_at":"2026-05-18T03:45:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0835","created_at":"2026-05-18T03:45:21Z"},{"alias_kind":"pith_short_12","alias_value":"2UCVJ5KXWIBQ","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2UCVJ5KXWIBQ6I72","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2UCVJ5KX","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2UCVJ5KXWIBQ6I72VDQYPN3ETL","target":"record","payload":{"canonical_record":{"source":{"id":"1209.0835","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-09-05T01:01:47Z","cross_cats_sorted":["cs.CY","physics.soc-ph"],"title_canon_sha256":"7d32cc882e5a156640538416785eb815bc39f3f517978ab2c500e41eca719842","abstract_canon_sha256":"61752ab5dfa932f2b163901d6b6b4189a2b605c69aa3f7953b88b3abb378f2da"},"schema_version":"1.0"},"canonical_sha256":"d50554f557b2030f23faa8e187b7649af285c7b0298f4045b7fe57283a99a284","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:21.625893Z","signature_b64":"kFHW7O9CXf88xiWWbyjG7cDdSYCO+5W5OvvPxa7LT9bOVox+NXqBo+/B/uWFFpwgHuGyfOrgUEoZqzrQh0OTDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d50554f557b2030f23faa8e187b7649af285c7b0298f4045b7fe57283a99a284","last_reissued_at":"2026-05-18T03:45:21.625160Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:21.625160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1209.0835","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:45:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fc3q6YYUTgHklpheAbcWadckrdBgdQubwjrtrXPrxt0KqlTlyqqfTAFRgY0jmGkYINQslBjIIuZWRWplzfdCDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:06:11.410191Z"},"content_sha256":"97edd9b9be832deee624ac24343145cc86ca610b2ca278dbb8b01db33141bb4a","schema_version":"1.0","event_id":"sha256:97edd9b9be832deee624ac24343145cc86ca610b2ca278dbb8b01db33141bb4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2UCVJ5KXWIBQ6I72VDQYPN3ETL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evolution of Social-Attribute Networks: Measurements, Modeling, and Implications using Google+","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY","physics.soc-ph"],"primary_cat":"cs.SI","authors_text":"Dawn Song, Emil Stefanov, Ling Huang, Neil Zhenqiang Gong, Prateek Mittal, Vyas Sekar, Wenchang Xu","submitted_at":"2012-09-05T01:01:47Z","abstract_excerpt":"Understanding social network structure and evolution has important implications for many aspects of network and system design including provisioning, bootstrapping trust and reputation systems via social networks, and defenses against Sybil attacks. Several recent results suggest that augmenting the social network structure with user attributes (e.g., location, employer, communities of interest) can provide a more fine-grained understanding of social networks. However, there have been few studies to provide a systematic understanding of these effects at scale. We bridge this gap using a unique"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0835","kind":"arxiv","version":4},"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":"2026-05-18T03:45:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XL3kayGRZyNvpd888fp7IZEYhxOzw9mI14T26wZnmc/6bnyKRdG/fwXhl2UiyVIHJbDc5mjelCHPv45L1wuSBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T19:06:11.410927Z"},"content_sha256":"f956844d145e291beff46b742f49b006008ba4afb6bfaee10e46ebb55f665c7f","schema_version":"1.0","event_id":"sha256:f956844d145e291beff46b742f49b006008ba4afb6bfaee10e46ebb55f665c7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL/bundle.json","state_url":"https://pith.science/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL/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":"2026-05-29T19:06:11Z","links":{"resolver":"https://pith.science/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL","bundle":"https://pith.science/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL/bundle.json","state":"https://pith.science/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2UCVJ5KXWIBQ6I72VDQYPN3ETL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2UCVJ5KXWIBQ6I72VDQYPN3ETL","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":"61752ab5dfa932f2b163901d6b6b4189a2b605c69aa3f7953b88b3abb378f2da","cross_cats_sorted":["cs.CY","physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-09-05T01:01:47Z","title_canon_sha256":"7d32cc882e5a156640538416785eb815bc39f3f517978ab2c500e41eca719842"},"schema_version":"1.0","source":{"id":"1209.0835","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1209.0835","created_at":"2026-05-18T03:45:21Z"},{"alias_kind":"arxiv_version","alias_value":"1209.0835v4","created_at":"2026-05-18T03:45:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1209.0835","created_at":"2026-05-18T03:45:21Z"},{"alias_kind":"pith_short_12","alias_value":"2UCVJ5KXWIBQ","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2UCVJ5KXWIBQ6I72","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2UCVJ5KX","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:f956844d145e291beff46b742f49b006008ba4afb6bfaee10e46ebb55f665c7f","target":"graph","created_at":"2026-05-18T03:45:21Z","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":"Understanding social network structure and evolution has important implications for many aspects of network and system design including provisioning, bootstrapping trust and reputation systems via social networks, and defenses against Sybil attacks. Several recent results suggest that augmenting the social network structure with user attributes (e.g., location, employer, communities of interest) can provide a more fine-grained understanding of social networks. However, there have been few studies to provide a systematic understanding of these effects at scale. We bridge this gap using a unique","authors_text":"Dawn Song, Emil Stefanov, Ling Huang, Neil Zhenqiang Gong, Prateek Mittal, Vyas Sekar, Wenchang Xu","cross_cats":["cs.CY","physics.soc-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-09-05T01:01:47Z","title":"Evolution of Social-Attribute Networks: Measurements, Modeling, and Implications using Google+"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1209.0835","kind":"arxiv","version":4},"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":"sha256:97edd9b9be832deee624ac24343145cc86ca610b2ca278dbb8b01db33141bb4a","target":"record","created_at":"2026-05-18T03:45:21Z","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":"61752ab5dfa932f2b163901d6b6b4189a2b605c69aa3f7953b88b3abb378f2da","cross_cats_sorted":["cs.CY","physics.soc-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-09-05T01:01:47Z","title_canon_sha256":"7d32cc882e5a156640538416785eb815bc39f3f517978ab2c500e41eca719842"},"schema_version":"1.0","source":{"id":"1209.0835","kind":"arxiv","version":4}},"canonical_sha256":"d50554f557b2030f23faa8e187b7649af285c7b0298f4045b7fe57283a99a284","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d50554f557b2030f23faa8e187b7649af285c7b0298f4045b7fe57283a99a284","first_computed_at":"2026-05-18T03:45:21.625160Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:45:21.625160Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kFHW7O9CXf88xiWWbyjG7cDdSYCO+5W5OvvPxa7LT9bOVox+NXqBo+/B/uWFFpwgHuGyfOrgUEoZqzrQh0OTDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:45:21.625893Z","signed_message":"canonical_sha256_bytes"},"source_id":"1209.0835","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:97edd9b9be832deee624ac24343145cc86ca610b2ca278dbb8b01db33141bb4a","sha256:f956844d145e291beff46b742f49b006008ba4afb6bfaee10e46ebb55f665c7f"],"state_sha256":"9db69941bf02349b686360647fbdd2c210afa7bac7ade1a797f0c328cbcf5513"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"adgQTleTdA2B/Q5aaRDWPdcUufGTzF19uQsmUj6eevsbdqBwMf3zPluAZOLUQLxhQP8tuH46RMqTTezCbAJ1Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T19:06:11.415695Z","bundle_sha256":"a1f0584aa60f057ee0b50e9711656dcac9e2af55e1a445e13f05f9ea53bb0ca7"}}