{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7WE3QDUUR7B643L5X7B67DI366","short_pith_number":"pith:7WE3QDUU","canonical_record":{"source":{"id":"2607.04601","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2026-07-06T02:09:40Z","cross_cats_sorted":[],"title_canon_sha256":"b9fe12fdca2cc11ee3ed22d0687898bae44011012aa9354a69d3be16f6e7693f","abstract_canon_sha256":"6cc85203da49d30f23997c096268be7b8b9ea1f7510c643c04187ef1128102e0"},"schema_version":"1.0"},"canonical_sha256":"fd89b80e948fc3ee6d7dbfc3ef8d1bf784dfe787455e42fc89848d7e57b3781c","source":{"kind":"arxiv","id":"2607.04601","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.04601","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"arxiv_version","alias_value":"2607.04601v1","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.04601","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"pith_short_12","alias_value":"7WE3QDUUR7B6","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"pith_short_16","alias_value":"7WE3QDUUR7B643L5","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"pith_short_8","alias_value":"7WE3QDUU","created_at":"2026-07-07T02:19:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7WE3QDUUR7B643L5X7B67DI366","target":"record","payload":{"canonical_record":{"source":{"id":"2607.04601","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2026-07-06T02:09:40Z","cross_cats_sorted":[],"title_canon_sha256":"b9fe12fdca2cc11ee3ed22d0687898bae44011012aa9354a69d3be16f6e7693f","abstract_canon_sha256":"6cc85203da49d30f23997c096268be7b8b9ea1f7510c643c04187ef1128102e0"},"schema_version":"1.0"},"canonical_sha256":"fd89b80e948fc3ee6d7dbfc3ef8d1bf784dfe787455e42fc89848d7e57b3781c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T02:19:26.961050Z","signature_b64":"z99bKRLRNAStP2Oh9Ic70rIhPbajZgOzdsZv3NE8mUgWQW8SM0jmfm3UXTNiPVq8QBeBcKQbMHM/kogWlpf1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd89b80e948fc3ee6d7dbfc3ef8d1bf784dfe787455e42fc89848d7e57b3781c","last_reissued_at":"2026-07-07T02:19:26.960329Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T02:19:26.960329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.04601","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":"2026-07-07T02:19:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cg1JWk13e1s0VYB4QdnG5vmwyYXdbsufGGojuEMKMduHmcgcVq+fcVai8Citf/3VokTW6DNT+idlFLt7oZHuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T01:08:36.633198Z"},"content_sha256":"231d5c914cd226bb20557d91771cf3e306637b909c2c1dac94ed3b408c8fcebc","schema_version":"1.0","event_id":"sha256:231d5c914cd226bb20557d91771cf3e306637b909c2c1dac94ed3b408c8fcebc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7WE3QDUUR7B643L5X7B67DI366","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Double-edged Effect of Banning Generative AI on Online Question-and-Answer Communities: Evidence from Stack Exchange","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.CY","authors_text":"Lynn Wu, Qinglai He, Xitong Li, Yuanhong Ma","submitted_at":"2026-07-06T02:09:40Z","abstract_excerpt":"We investigate how banning generative artificial intelligence-generated content (AIGC) affects knowledge seeking, knowledge contribution, and contribution efficiency in online question-and-answer communities. After the launch of ChatGPT in late November 2022, several Stack Exchange communities implemented official bans on AIGC over concerns such as less reliable and socially engaged content. Leveraging data from the full network of Stack Exchange communities, we employ a difference-in-differences (DID) approach to examine the impacts of these bans. Our results reveal a double-edged impact: whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.04601","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.04601/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-07T02:19:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DWgTD8SqBM1iz/V5q6vTXbdd61llIw/FS7MznlH3Kbw4kPITC5D5XWg90/kQWDM0xgsrgAhxyQ6+Y8WC+2F4Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T01:08:36.633743Z"},"content_sha256":"49995d9c95f0e4fa5a79c1fdecb59af578790953003ef372116bef32daa99daa","schema_version":"1.0","event_id":"sha256:49995d9c95f0e4fa5a79c1fdecb59af578790953003ef372116bef32daa99daa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7WE3QDUUR7B643L5X7B67DI366/bundle.json","state_url":"https://pith.science/pith/7WE3QDUUR7B643L5X7B67DI366/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7WE3QDUUR7B643L5X7B67DI366/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":"2026-08-07T01:08:36Z","links":{"resolver":"https://pith.science/pith/7WE3QDUUR7B643L5X7B67DI366","bundle":"https://pith.science/pith/7WE3QDUUR7B643L5X7B67DI366/bundle.json","state":"https://pith.science/pith/7WE3QDUUR7B643L5X7B67DI366/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7WE3QDUUR7B643L5X7B67DI366/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7WE3QDUUR7B643L5X7B67DI366","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":"6cc85203da49d30f23997c096268be7b8b9ea1f7510c643c04187ef1128102e0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2026-07-06T02:09:40Z","title_canon_sha256":"b9fe12fdca2cc11ee3ed22d0687898bae44011012aa9354a69d3be16f6e7693f"},"schema_version":"1.0","source":{"id":"2607.04601","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.04601","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"arxiv_version","alias_value":"2607.04601v1","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.04601","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"pith_short_12","alias_value":"7WE3QDUUR7B6","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"pith_short_16","alias_value":"7WE3QDUUR7B643L5","created_at":"2026-07-07T02:19:26Z"},{"alias_kind":"pith_short_8","alias_value":"7WE3QDUU","created_at":"2026-07-07T02:19:26Z"}],"graph_snapshots":[{"event_id":"sha256:49995d9c95f0e4fa5a79c1fdecb59af578790953003ef372116bef32daa99daa","target":"graph","created_at":"2026-07-07T02:19:26Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.04601/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate how banning generative artificial intelligence-generated content (AIGC) affects knowledge seeking, knowledge contribution, and contribution efficiency in online question-and-answer communities. After the launch of ChatGPT in late November 2022, several Stack Exchange communities implemented official bans on AIGC over concerns such as less reliable and socially engaged content. Leveraging data from the full network of Stack Exchange communities, we employ a difference-in-differences (DID) approach to examine the impacts of these bans. Our results reveal a double-edged impact: whi","authors_text":"Lynn Wu, Qinglai He, Xitong Li, Yuanhong Ma","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2026-07-06T02:09:40Z","title":"The Double-edged Effect of Banning Generative AI on Online Question-and-Answer Communities: Evidence from Stack Exchange"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.04601","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":"sha256:231d5c914cd226bb20557d91771cf3e306637b909c2c1dac94ed3b408c8fcebc","target":"record","created_at":"2026-07-07T02:19:26Z","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":"6cc85203da49d30f23997c096268be7b8b9ea1f7510c643c04187ef1128102e0","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CY","submitted_at":"2026-07-06T02:09:40Z","title_canon_sha256":"b9fe12fdca2cc11ee3ed22d0687898bae44011012aa9354a69d3be16f6e7693f"},"schema_version":"1.0","source":{"id":"2607.04601","kind":"arxiv","version":1}},"canonical_sha256":"fd89b80e948fc3ee6d7dbfc3ef8d1bf784dfe787455e42fc89848d7e57b3781c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd89b80e948fc3ee6d7dbfc3ef8d1bf784dfe787455e42fc89848d7e57b3781c","first_computed_at":"2026-07-07T02:19:26.960329Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T02:19:26.960329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z99bKRLRNAStP2Oh9Ic70rIhPbajZgOzdsZv3NE8mUgWQW8SM0jmfm3UXTNiPVq8QBeBcKQbMHM/kogWlpf1AQ==","signature_status":"signed_v1","signed_at":"2026-07-07T02:19:26.961050Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.04601","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:231d5c914cd226bb20557d91771cf3e306637b909c2c1dac94ed3b408c8fcebc","sha256:49995d9c95f0e4fa5a79c1fdecb59af578790953003ef372116bef32daa99daa"],"state_sha256":"04716a8d8b62191f9632302b63ed8f7bec10e3ea11d370fc1b0064524166d5ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RyjjRocrS7rULaQZ7v0noLRnU9De/aOkfpK2HI6FVCFVe+qCX6M0dbbGGbkQ0t7POgSHRNa0AHld6/acB+f2AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T01:08:36.637891Z","bundle_sha256":"4aadc5cafa125efdfb32c7eaf9d7fcfee04f992699478d73985ecc8e4f7b4b9a"}}