{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:QWUXIIFTEINBEQEUD5ESIU6HKE","short_pith_number":"pith:QWUXIIFT","canonical_record":{"source":{"id":"1204.3724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-04-17T08:18:58Z","cross_cats_sorted":["cs.HC"],"title_canon_sha256":"a06dee8175ce5c92866bfc046aafea423179891ef6b3650a874471e4edad3fa8","abstract_canon_sha256":"0a5f806cdf601b823a57febfd0988df036ba98989907aa310637799fd3817fc2"},"schema_version":"1.0"},"canonical_sha256":"85a97420b3221a1240941f492453c7513384bd09e1461f34038750c2ec0e0ae4","source":{"kind":"arxiv","id":"1204.3724","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3724","created_at":"2026-05-18T03:57:39Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3724v1","created_at":"2026-05-18T03:57:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3724","created_at":"2026-05-18T03:57:39Z"},{"alias_kind":"pith_short_12","alias_value":"QWUXIIFTEINB","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"QWUXIIFTEINBEQEU","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"QWUXIIFT","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:QWUXIIFTEINBEQEUD5ESIU6HKE","target":"record","payload":{"canonical_record":{"source":{"id":"1204.3724","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-04-17T08:18:58Z","cross_cats_sorted":["cs.HC"],"title_canon_sha256":"a06dee8175ce5c92866bfc046aafea423179891ef6b3650a874471e4edad3fa8","abstract_canon_sha256":"0a5f806cdf601b823a57febfd0988df036ba98989907aa310637799fd3817fc2"},"schema_version":"1.0"},"canonical_sha256":"85a97420b3221a1240941f492453c7513384bd09e1461f34038750c2ec0e0ae4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:57:39.744001Z","signature_b64":"3H846lCFQA/qJ6I4OtBCE0CuFKNmWSkJNMwG9V+L/A+TGccJXZK0pSZjdFDSo/jTd1mho9ctLju8inFPxoaoDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85a97420b3221a1240941f492453c7513384bd09e1461f34038750c2ec0e0ae4","last_reissued_at":"2026-05-18T03:57:39.743307Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:57:39.743307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.3724","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":"2026-05-18T03:57:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zdmujpkIVFw6TGhcXvmG+A4NnPAfB45AlykDTn5kAe0q46Lz+cTMJzJjXzRszMTQr4cpADxWDRrhw5EEbO/PCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:26:26.569710Z"},"content_sha256":"4180bc32dac1a4ffd3343b8fb4d4fe81ec6493baeb7b5314a2e56deb82d61770","schema_version":"1.0","event_id":"sha256:4180bc32dac1a4ffd3343b8fb4d4fe81ec6493baeb7b5314a2e56deb82d61770"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:QWUXIIFTEINBEQEUD5ESIU6HKE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Who is Authoritative? Understanding Reputation Mechanisms in Quora","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.HC"],"primary_cat":"cs.SI","authors_text":"Ed H. Chi, Lichan Hong, Sharoda A. Paul","submitted_at":"2012-04-17T08:18:58Z","abstract_excerpt":"As social Q&A sites gain popularity, it is important to understand how users judge the authoritativeness of users and content, build reputation, and identify and promote high quality content. We conducted a study of emerging social Q&A site Quora. First, we describe user activity on Quora by analyzing data across 60 question topics and 3917 users. Then we provide a rich understanding of issues of authority, reputation, and quality from in-depth interviews with ten Quora users. Our results show that primary sources of information on Quora are judged authoritative. Also, users judge the reputati"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3724","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":"2026-05-18T03:57:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hyG2i0fK/wF+r2tTozjgac9Seh20GSir9ih/8xA4SZ4VeckswXpJDNt6EnnYgp9Y5BwuIQoIgRz1mIKeb4/7Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:26:26.570655Z"},"content_sha256":"4de4a42b8748c1fffab3806755c9a6b11b06950d22e476640dd207e12b76c975","schema_version":"1.0","event_id":"sha256:4de4a42b8748c1fffab3806755c9a6b11b06950d22e476640dd207e12b76c975"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QWUXIIFTEINBEQEUD5ESIU6HKE/bundle.json","state_url":"https://pith.science/pith/QWUXIIFTEINBEQEUD5ESIU6HKE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QWUXIIFTEINBEQEUD5ESIU6HKE/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":"2026-08-03T19:26:26Z","links":{"resolver":"https://pith.science/pith/QWUXIIFTEINBEQEUD5ESIU6HKE","bundle":"https://pith.science/pith/QWUXIIFTEINBEQEUD5ESIU6HKE/bundle.json","state":"https://pith.science/pith/QWUXIIFTEINBEQEUD5ESIU6HKE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QWUXIIFTEINBEQEUD5ESIU6HKE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:QWUXIIFTEINBEQEUD5ESIU6HKE","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":"0a5f806cdf601b823a57febfd0988df036ba98989907aa310637799fd3817fc2","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-04-17T08:18:58Z","title_canon_sha256":"a06dee8175ce5c92866bfc046aafea423179891ef6b3650a874471e4edad3fa8"},"schema_version":"1.0","source":{"id":"1204.3724","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.3724","created_at":"2026-05-18T03:57:39Z"},{"alias_kind":"arxiv_version","alias_value":"1204.3724v1","created_at":"2026-05-18T03:57:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.3724","created_at":"2026-05-18T03:57:39Z"},{"alias_kind":"pith_short_12","alias_value":"QWUXIIFTEINB","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"QWUXIIFTEINBEQEU","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"QWUXIIFT","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:4de4a42b8748c1fffab3806755c9a6b11b06950d22e476640dd207e12b76c975","target":"graph","created_at":"2026-05-18T03:57:39Z","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":"As social Q&A sites gain popularity, it is important to understand how users judge the authoritativeness of users and content, build reputation, and identify and promote high quality content. We conducted a study of emerging social Q&A site Quora. First, we describe user activity on Quora by analyzing data across 60 question topics and 3917 users. Then we provide a rich understanding of issues of authority, reputation, and quality from in-depth interviews with ten Quora users. Our results show that primary sources of information on Quora are judged authoritative. Also, users judge the reputati","authors_text":"Ed H. Chi, Lichan Hong, Sharoda A. Paul","cross_cats":["cs.HC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-04-17T08:18:58Z","title":"Who is Authoritative? Understanding Reputation Mechanisms in Quora"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.3724","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":"sha256:4180bc32dac1a4ffd3343b8fb4d4fe81ec6493baeb7b5314a2e56deb82d61770","target":"record","created_at":"2026-05-18T03:57:39Z","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":"0a5f806cdf601b823a57febfd0988df036ba98989907aa310637799fd3817fc2","cross_cats_sorted":["cs.HC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2012-04-17T08:18:58Z","title_canon_sha256":"a06dee8175ce5c92866bfc046aafea423179891ef6b3650a874471e4edad3fa8"},"schema_version":"1.0","source":{"id":"1204.3724","kind":"arxiv","version":1}},"canonical_sha256":"85a97420b3221a1240941f492453c7513384bd09e1461f34038750c2ec0e0ae4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85a97420b3221a1240941f492453c7513384bd09e1461f34038750c2ec0e0ae4","first_computed_at":"2026-05-18T03:57:39.743307Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:57:39.743307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3H846lCFQA/qJ6I4OtBCE0CuFKNmWSkJNMwG9V+L/A+TGccJXZK0pSZjdFDSo/jTd1mho9ctLju8inFPxoaoDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:57:39.744001Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.3724","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4180bc32dac1a4ffd3343b8fb4d4fe81ec6493baeb7b5314a2e56deb82d61770","sha256:4de4a42b8748c1fffab3806755c9a6b11b06950d22e476640dd207e12b76c975"],"state_sha256":"9eba88563e6c3f05de254bfdd37be62806308b8e8eda1b9e6c812d8eaccfc5e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CfCxd+9FUI5/dKslcHCTe2k/GORKI9P1jJixeHL3xYNiQHyqFH5XzbEPnxskX+E1XHNhyFP94jg8XYAoEG7uCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:26:26.576082Z","bundle_sha256":"dad687a3080074e7f120c5600c26f425b70200ca6c090ba1bed044f153d574da"}}