{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:D2I33HOPASSQU46Z5S52BPN5UE","short_pith_number":"pith:D2I33HOP","canonical_record":{"source":{"id":"1907.08873","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-07-20T22:24:44Z","cross_cats_sorted":["cs.CY","cs.IR"],"title_canon_sha256":"fa9db6d749fa0c7d80be141b0b0b20147738153be3931cddaffe90bb7cbdd39e","abstract_canon_sha256":"0aaeda8997628853c2234b9771bfbec54086f0c0eafba5f65bbf05db7b9f90ba"},"schema_version":"1.0"},"canonical_sha256":"1e91bd9dcf04a50a73d9ecbba0bdbda139dade07e98701ee7ce2377a6748659f","source":{"kind":"arxiv","id":"1907.08873","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08873","created_at":"2026-05-17T23:40:02Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08873v1","created_at":"2026-05-17T23:40:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08873","created_at":"2026-05-17T23:40:02Z"},{"alias_kind":"pith_short_12","alias_value":"D2I33HOPASSQ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D2I33HOPASSQU46Z","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D2I33HOP","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:D2I33HOPASSQU46Z5S52BPN5UE","target":"record","payload":{"canonical_record":{"source":{"id":"1907.08873","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-07-20T22:24:44Z","cross_cats_sorted":["cs.CY","cs.IR"],"title_canon_sha256":"fa9db6d749fa0c7d80be141b0b0b20147738153be3931cddaffe90bb7cbdd39e","abstract_canon_sha256":"0aaeda8997628853c2234b9771bfbec54086f0c0eafba5f65bbf05db7b9f90ba"},"schema_version":"1.0"},"canonical_sha256":"1e91bd9dcf04a50a73d9ecbba0bdbda139dade07e98701ee7ce2377a6748659f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:02.898024Z","signature_b64":"0zP4Yu8G9Goay8+c/Gtn6BYmaWuDwCj7md6Ro/LCsp15fS3iXEhnHZnt2PJyLCBMzW3IkNED+SFDFUzh8nEVCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e91bd9dcf04a50a73d9ecbba0bdbda139dade07e98701ee7ce2377a6748659f","last_reissued_at":"2026-05-17T23:40:02.897377Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:02.897377Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.08873","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":"2026-05-17T23:40:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lRRat5EHNeilchBpktOH05oWaXnBVlghKq/qUcs3nsttdGA6QMuUdWqCCHueQ9X+/sCVBWnu0tFGUDtsi3fNCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:45:50.365105Z"},"content_sha256":"253c67a3742d19385dbb45e0c3b21ccb7c6baa449656170ce7dc1e587299c129","schema_version":"1.0","event_id":"sha256:253c67a3742d19385dbb45e0c3b21ccb7c6baa449656170ce7dc1e587299c129"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:D2I33HOPASSQU46Z5S52BPN5UE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting Cyberbullying and Cyberaggression in Social Media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY","cs.IR"],"primary_cat":"cs.SI","authors_text":"Athena Vakali, Despoina Chatzakou, Emiliano De Cristofaro, Gianluca Stringhini, Ilias Leontiadis, Jeremy Blackburn, Nicolas Kourtellis","submitted_at":"2019-07-20T22:24:44Z","abstract_excerpt":"Cyberbullying and cyberaggression are increasingly worrisome phenomena affecting people across all demographics. More than half of young social media users worldwide have been exposed to such prolonged and/or coordinated digital harassment. Victims can experience a wide range of emotions, with negative consequences such as embarrassment, depression, isolation from other community members, which embed the risk to lead to even more critical consequences, such as suicide attempts.\n  In this work, we take the first concrete steps to understand the characteristics of abusive behavior in Twitter, on"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08873","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":"2026-05-17T23:40:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NLryeZN5h+uSfbDNoXOy11lqzsXo72z2SOCbt8wYjqYoo9fm6KDXhMHfgs+ov97CXYAHZ3fPao64bRSZALkSCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:45:50.365465Z"},"content_sha256":"7f54193a84f47c9cc0bd19292c692a16df4e32658fe5b3b685844d73bf951e36","schema_version":"1.0","event_id":"sha256:7f54193a84f47c9cc0bd19292c692a16df4e32658fe5b3b685844d73bf951e36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D2I33HOPASSQU46Z5S52BPN5UE/bundle.json","state_url":"https://pith.science/pith/D2I33HOPASSQU46Z5S52BPN5UE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D2I33HOPASSQU46Z5S52BPN5UE/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":"2026-06-01T22:45:50Z","links":{"resolver":"https://pith.science/pith/D2I33HOPASSQU46Z5S52BPN5UE","bundle":"https://pith.science/pith/D2I33HOPASSQU46Z5S52BPN5UE/bundle.json","state":"https://pith.science/pith/D2I33HOPASSQU46Z5S52BPN5UE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D2I33HOPASSQU46Z5S52BPN5UE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:D2I33HOPASSQU46Z5S52BPN5UE","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":"0aaeda8997628853c2234b9771bfbec54086f0c0eafba5f65bbf05db7b9f90ba","cross_cats_sorted":["cs.CY","cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-07-20T22:24:44Z","title_canon_sha256":"fa9db6d749fa0c7d80be141b0b0b20147738153be3931cddaffe90bb7cbdd39e"},"schema_version":"1.0","source":{"id":"1907.08873","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.08873","created_at":"2026-05-17T23:40:02Z"},{"alias_kind":"arxiv_version","alias_value":"1907.08873v1","created_at":"2026-05-17T23:40:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.08873","created_at":"2026-05-17T23:40:02Z"},{"alias_kind":"pith_short_12","alias_value":"D2I33HOPASSQ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"D2I33HOPASSQU46Z","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"D2I33HOP","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:7f54193a84f47c9cc0bd19292c692a16df4e32658fe5b3b685844d73bf951e36","target":"graph","created_at":"2026-05-17T23:40:02Z","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":"Cyberbullying and cyberaggression are increasingly worrisome phenomena affecting people across all demographics. More than half of young social media users worldwide have been exposed to such prolonged and/or coordinated digital harassment. Victims can experience a wide range of emotions, with negative consequences such as embarrassment, depression, isolation from other community members, which embed the risk to lead to even more critical consequences, such as suicide attempts.\n  In this work, we take the first concrete steps to understand the characteristics of abusive behavior in Twitter, on","authors_text":"Athena Vakali, Despoina Chatzakou, Emiliano De Cristofaro, Gianluca Stringhini, Ilias Leontiadis, Jeremy Blackburn, Nicolas Kourtellis","cross_cats":["cs.CY","cs.IR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-07-20T22:24:44Z","title":"Detecting Cyberbullying and Cyberaggression in Social Media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.08873","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":"sha256:253c67a3742d19385dbb45e0c3b21ccb7c6baa449656170ce7dc1e587299c129","target":"record","created_at":"2026-05-17T23:40:02Z","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":"0aaeda8997628853c2234b9771bfbec54086f0c0eafba5f65bbf05db7b9f90ba","cross_cats_sorted":["cs.CY","cs.IR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SI","submitted_at":"2019-07-20T22:24:44Z","title_canon_sha256":"fa9db6d749fa0c7d80be141b0b0b20147738153be3931cddaffe90bb7cbdd39e"},"schema_version":"1.0","source":{"id":"1907.08873","kind":"arxiv","version":1}},"canonical_sha256":"1e91bd9dcf04a50a73d9ecbba0bdbda139dade07e98701ee7ce2377a6748659f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e91bd9dcf04a50a73d9ecbba0bdbda139dade07e98701ee7ce2377a6748659f","first_computed_at":"2026-05-17T23:40:02.897377Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:02.897377Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0zP4Yu8G9Goay8+c/Gtn6BYmaWuDwCj7md6Ro/LCsp15fS3iXEhnHZnt2PJyLCBMzW3IkNED+SFDFUzh8nEVCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:02.898024Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.08873","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:253c67a3742d19385dbb45e0c3b21ccb7c6baa449656170ce7dc1e587299c129","sha256:7f54193a84f47c9cc0bd19292c692a16df4e32658fe5b3b685844d73bf951e36"],"state_sha256":"06db884cdf7da0e14a91a3990e2cb43857fe70c245e83b6d82c29f8522f923fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Pv9JYFO6zFRJsYljubMx6wOlCsjMBYOs1C5xZ5bPie2c3Fw4tSOpxOA4/0Wi7prVDz49/TTknCIvjhpNrKYMBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T22:45:50.367407Z","bundle_sha256":"6d33cb5b6c43438802a690f98ea157a6f691965ffbca7936d43e28f208c60cdf"}}