{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:UKJMRW46XTYWIEH3ASD7OQQBUL","short_pith_number":"pith:UKJMRW46","canonical_record":{"source":{"id":"1205.1357","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-05-07T12:16:27Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"732a389109b7537ed93b1f0613ff8c21e8c309d4f90e28cbd6f8ff2bcb974d56","abstract_canon_sha256":"d3118aee4e7a2e01553d1cd313a02422479f50751c6f83d1f8e2bc8126477f79"},"schema_version":"1.0"},"canonical_sha256":"a292c8db9ebcf16410fb0487f74201a2d7a0ee797a05fe0c9404399bf3be7ed2","source":{"kind":"arxiv","id":"1205.1357","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1357","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1357v1","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1357","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"pith_short_12","alias_value":"UKJMRW46XTYW","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"UKJMRW46XTYWIEH3","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"UKJMRW46","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:UKJMRW46XTYWIEH3ASD7OQQBUL","target":"record","payload":{"canonical_record":{"source":{"id":"1205.1357","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-05-07T12:16:27Z","cross_cats_sorted":["cs.LG"],"title_canon_sha256":"732a389109b7537ed93b1f0613ff8c21e8c309d4f90e28cbd6f8ff2bcb974d56","abstract_canon_sha256":"d3118aee4e7a2e01553d1cd313a02422479f50751c6f83d1f8e2bc8126477f79"},"schema_version":"1.0"},"canonical_sha256":"a292c8db9ebcf16410fb0487f74201a2d7a0ee797a05fe0c9404399bf3be7ed2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:56:11.385424Z","signature_b64":"ESvbzcZfXNY/9oB/Y2MY3oqHvquWSsncStC1qlT5YkzkG617wAvyzXm848olli97khAo1g9Gm2f07N/CHhNqCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a292c8db9ebcf16410fb0487f74201a2d7a0ee797a05fe0c9404399bf3be7ed2","last_reissued_at":"2026-05-18T03:56:11.384798Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:56:11.384798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.1357","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":"2026-05-18T03:56:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6F4xKgSaCueuCyxSuSjntS4eLd3cLNWeWqydh7nn1U9ystKWAPGGk23R6Qld2fk2AntRokQMNRv6VE1dtNP5Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T08:38:05.760128Z"},"content_sha256":"aa12a258adbf6348070ba22a7d10bd999d5783aa7a0ac08aa19c4ffeffb68b54","schema_version":"1.0","event_id":"sha256:aa12a258adbf6348070ba22a7d10bd999d5783aa7a0ac08aa19c4ffeffb68b54"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:UKJMRW46XTYWIEH3ASD7OQQBUL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting Spammers via Aggregated Historical Data Set","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.LG"],"primary_cat":"cs.CR","authors_text":"Eitan Menahem, Rami Puzis","submitted_at":"2012-05-07T12:16:27Z","abstract_excerpt":"The battle between email service providers and senders of mass unsolicited emails (Spam) continues to gain traction. Vast numbers of Spam emails are sent mainly from automatic botnets distributed over the world. One method for mitigating Spam in a computationally efficient manner is fast and accurate blacklisting of the senders. In this work we propose a new sender reputation mechanism that is based on an aggregated historical data-set which encodes the behavior of mail transfer agents over time. A historical data-set is created from labeled logs of received emails. We use machine learning alg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1357","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":"2026-05-18T03:56:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ieB9EQ+DUOPOphgXm+gpOON43iNZCWwQerMWRXAGFS7jzzUmy6MshtzTTHXWWHSn2zSuD3Ay/6WUufidmJH+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T08:38:05.760838Z"},"content_sha256":"752d3251ed1f4f335ebd1ae30509a68daf69dc05eeb0df11e672dd66d6693e2e","schema_version":"1.0","event_id":"sha256:752d3251ed1f4f335ebd1ae30509a68daf69dc05eeb0df11e672dd66d6693e2e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UKJMRW46XTYWIEH3ASD7OQQBUL/bundle.json","state_url":"https://pith.science/pith/UKJMRW46XTYWIEH3ASD7OQQBUL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UKJMRW46XTYWIEH3ASD7OQQBUL/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":"2026-06-06T08:38:05Z","links":{"resolver":"https://pith.science/pith/UKJMRW46XTYWIEH3ASD7OQQBUL","bundle":"https://pith.science/pith/UKJMRW46XTYWIEH3ASD7OQQBUL/bundle.json","state":"https://pith.science/pith/UKJMRW46XTYWIEH3ASD7OQQBUL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UKJMRW46XTYWIEH3ASD7OQQBUL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:UKJMRW46XTYWIEH3ASD7OQQBUL","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":"d3118aee4e7a2e01553d1cd313a02422479f50751c6f83d1f8e2bc8126477f79","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-05-07T12:16:27Z","title_canon_sha256":"732a389109b7537ed93b1f0613ff8c21e8c309d4f90e28cbd6f8ff2bcb974d56"},"schema_version":"1.0","source":{"id":"1205.1357","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1357","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1357v1","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1357","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"pith_short_12","alias_value":"UKJMRW46XTYW","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"UKJMRW46XTYWIEH3","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"UKJMRW46","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:752d3251ed1f4f335ebd1ae30509a68daf69dc05eeb0df11e672dd66d6693e2e","target":"graph","created_at":"2026-05-18T03:56:11Z","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":"The battle between email service providers and senders of mass unsolicited emails (Spam) continues to gain traction. Vast numbers of Spam emails are sent mainly from automatic botnets distributed over the world. One method for mitigating Spam in a computationally efficient manner is fast and accurate blacklisting of the senders. In this work we propose a new sender reputation mechanism that is based on an aggregated historical data-set which encodes the behavior of mail transfer agents over time. A historical data-set is created from labeled logs of received emails. We use machine learning alg","authors_text":"Eitan Menahem, Rami Puzis","cross_cats":["cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-05-07T12:16:27Z","title":"Detecting Spammers via Aggregated Historical Data Set"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1357","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:aa12a258adbf6348070ba22a7d10bd999d5783aa7a0ac08aa19c4ffeffb68b54","target":"record","created_at":"2026-05-18T03:56:11Z","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":"d3118aee4e7a2e01553d1cd313a02422479f50751c6f83d1f8e2bc8126477f79","cross_cats_sorted":["cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CR","submitted_at":"2012-05-07T12:16:27Z","title_canon_sha256":"732a389109b7537ed93b1f0613ff8c21e8c309d4f90e28cbd6f8ff2bcb974d56"},"schema_version":"1.0","source":{"id":"1205.1357","kind":"arxiv","version":1}},"canonical_sha256":"a292c8db9ebcf16410fb0487f74201a2d7a0ee797a05fe0c9404399bf3be7ed2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a292c8db9ebcf16410fb0487f74201a2d7a0ee797a05fe0c9404399bf3be7ed2","first_computed_at":"2026-05-18T03:56:11.384798Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:56:11.384798Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ESvbzcZfXNY/9oB/Y2MY3oqHvquWSsncStC1qlT5YkzkG617wAvyzXm848olli97khAo1g9Gm2f07N/CHhNqCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:56:11.385424Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.1357","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa12a258adbf6348070ba22a7d10bd999d5783aa7a0ac08aa19c4ffeffb68b54","sha256:752d3251ed1f4f335ebd1ae30509a68daf69dc05eeb0df11e672dd66d6693e2e"],"state_sha256":"489573ac60e1bf20ad3c6f58d063d298b9578869e3e27d9ca361971de2e9253d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kpTd9Ozh1NhUfp30cYnlZlE9eljyKuaEOhcgmA/Hnu9q87g6pQgHB9MaGebaopgJD1U5qUBtJVczL5Fd770zAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T08:38:05.764794Z","bundle_sha256":"70f14d41efcf15ca730fe18ce0408fa60cf3c9f99cd082e6bbcebe4dfe131f15"}}