{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:DDZWZVZGUMFT24JQKAX6QS4X3B","short_pith_number":"pith:DDZWZVZG","canonical_record":{"source":{"id":"2407.12497","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2024-07-17T11:25:25Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"ad476de5e8782e4ca41cd0d47db0ad46a3c13298c5bad66c65a51bac570ecee4","abstract_canon_sha256":"77486d877890a6a48db8f44853056808c22b10ea0e53485892c33e9db267c2a4"},"schema_version":"1.0"},"canonical_sha256":"18f36cd726a30b3d7130502fe84b97d871d6d6b1e7416fe5897deae355d0fc7d","source":{"kind":"arxiv","id":"2407.12497","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.12497","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"arxiv_version","alias_value":"2407.12497v1","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.12497","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"pith_short_12","alias_value":"DDZWZVZGUMFT","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"pith_short_16","alias_value":"DDZWZVZGUMFT24JQ","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"pith_short_8","alias_value":"DDZWZVZG","created_at":"2026-07-05T08:45:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:DDZWZVZGUMFT24JQKAX6QS4X3B","target":"record","payload":{"canonical_record":{"source":{"id":"2407.12497","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2024-07-17T11:25:25Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"ad476de5e8782e4ca41cd0d47db0ad46a3c13298c5bad66c65a51bac570ecee4","abstract_canon_sha256":"77486d877890a6a48db8f44853056808c22b10ea0e53485892c33e9db267c2a4"},"schema_version":"1.0"},"canonical_sha256":"18f36cd726a30b3d7130502fe84b97d871d6d6b1e7416fe5897deae355d0fc7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:45:05.404938Z","signature_b64":"/Srhfhw+7/Wt7E3BTmWrE07uyulBetZBBto5p2yh73nZC92YiKMX/lkgtFc/5DPzmLFhKcXTFpSTasxvpYfGDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"18f36cd726a30b3d7130502fe84b97d871d6d6b1e7416fe5897deae355d0fc7d","last_reissued_at":"2026-07-05T08:45:05.404590Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:45:05.404590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2407.12497","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":"2026-07-05T08:45:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"btAYtsyGuixxqgjSphxHAULDC1GIgtzvCc1TYtXkR3Q9A57cz8bMUftuOEYmSZArr7g35lWeEBbZ/vUgiuESAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T12:38:40.485860Z"},"content_sha256":"6b6996da408869fa41771c073f62fe7d550a91f396fc2ef17d033f072d92f3e6","schema_version":"1.0","event_id":"sha256:6b6996da408869fa41771c073f62fe7d550a91f396fc2ef17d033f072d92f3e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:DDZWZVZGUMFT24JQKAX6QS4X3B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cell-Free Massive MIMO Surveillance of Multiple Untrusted Communication Links","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Hien Quoc Ngo, Lajos Hanzo, Michail Matthaiou, Zahra Mobini","submitted_at":"2024-07-17T11:25:25Z","abstract_excerpt":"A cell-free massive multiple-input multiple-output (CF-mMIMO) system is considered for enhancing the monitoring performance of wireless surveillance, where a large number of distributed multi-antenna aided legitimate monitoring nodes (MNs) proactively monitor multiple distributed untrusted communication links. We consider two types of MNs whose task is to either observe the untrusted transmitters or jam the untrusted receivers. We first analyze the performance of CF-mMIMO surveillance relying on both maximum ratio (MR) and partial zero-forcing (PZF) combining schemes and derive closed-form exp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.12497","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/2407.12497/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":"2026-07-05T08:45:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iE9HNrSTlBfMkxjVYtMCQmAPs5ki52rkpmwqWbRf4JWv8sqwGJtxUBzsNH6cHjRcLiDAjMCBf41FKtvNYVsQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T12:38:40.486380Z"},"content_sha256":"7930b9266c67627cc52df5723bf11926718f2add527d7d666025498b90590dda","schema_version":"1.0","event_id":"sha256:7930b9266c67627cc52df5723bf11926718f2add527d7d666025498b90590dda"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DDZWZVZGUMFT24JQKAX6QS4X3B/bundle.json","state_url":"https://pith.science/pith/DDZWZVZGUMFT24JQKAX6QS4X3B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DDZWZVZGUMFT24JQKAX6QS4X3B/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":"2026-08-10T12:38:40Z","links":{"resolver":"https://pith.science/pith/DDZWZVZGUMFT24JQKAX6QS4X3B","bundle":"https://pith.science/pith/DDZWZVZGUMFT24JQKAX6QS4X3B/bundle.json","state":"https://pith.science/pith/DDZWZVZGUMFT24JQKAX6QS4X3B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DDZWZVZGUMFT24JQKAX6QS4X3B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:DDZWZVZGUMFT24JQKAX6QS4X3B","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":"77486d877890a6a48db8f44853056808c22b10ea0e53485892c33e9db267c2a4","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2024-07-17T11:25:25Z","title_canon_sha256":"ad476de5e8782e4ca41cd0d47db0ad46a3c13298c5bad66c65a51bac570ecee4"},"schema_version":"1.0","source":{"id":"2407.12497","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2407.12497","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"arxiv_version","alias_value":"2407.12497v1","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.12497","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"pith_short_12","alias_value":"DDZWZVZGUMFT","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"pith_short_16","alias_value":"DDZWZVZGUMFT24JQ","created_at":"2026-07-05T08:45:05Z"},{"alias_kind":"pith_short_8","alias_value":"DDZWZVZG","created_at":"2026-07-05T08:45:05Z"}],"graph_snapshots":[{"event_id":"sha256:7930b9266c67627cc52df5723bf11926718f2add527d7d666025498b90590dda","target":"graph","created_at":"2026-07-05T08:45:05Z","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/2407.12497/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A cell-free massive multiple-input multiple-output (CF-mMIMO) system is considered for enhancing the monitoring performance of wireless surveillance, where a large number of distributed multi-antenna aided legitimate monitoring nodes (MNs) proactively monitor multiple distributed untrusted communication links. We consider two types of MNs whose task is to either observe the untrusted transmitters or jam the untrusted receivers. We first analyze the performance of CF-mMIMO surveillance relying on both maximum ratio (MR) and partial zero-forcing (PZF) combining schemes and derive closed-form exp","authors_text":"Hien Quoc Ngo, Lajos Hanzo, Michail Matthaiou, Zahra Mobini","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2024-07-17T11:25:25Z","title":"Cell-Free Massive MIMO Surveillance of Multiple Untrusted Communication Links"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.12497","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":"sha256:6b6996da408869fa41771c073f62fe7d550a91f396fc2ef17d033f072d92f3e6","target":"record","created_at":"2026-07-05T08:45:05Z","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":"77486d877890a6a48db8f44853056808c22b10ea0e53485892c33e9db267c2a4","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2024-07-17T11:25:25Z","title_canon_sha256":"ad476de5e8782e4ca41cd0d47db0ad46a3c13298c5bad66c65a51bac570ecee4"},"schema_version":"1.0","source":{"id":"2407.12497","kind":"arxiv","version":1}},"canonical_sha256":"18f36cd726a30b3d7130502fe84b97d871d6d6b1e7416fe5897deae355d0fc7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18f36cd726a30b3d7130502fe84b97d871d6d6b1e7416fe5897deae355d0fc7d","first_computed_at":"2026-07-05T08:45:05.404590Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:45:05.404590Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Srhfhw+7/Wt7E3BTmWrE07uyulBetZBBto5p2yh73nZC92YiKMX/lkgtFc/5DPzmLFhKcXTFpSTasxvpYfGDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:45:05.404938Z","signed_message":"canonical_sha256_bytes"},"source_id":"2407.12497","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b6996da408869fa41771c073f62fe7d550a91f396fc2ef17d033f072d92f3e6","sha256:7930b9266c67627cc52df5723bf11926718f2add527d7d666025498b90590dda"],"state_sha256":"2e977cde88391dd5419e0395bc93c01ae4ac5d643033da94c6d6e33d4cb32efa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EHadlsirxBFbialkog6nlbJpUwYexvItEU/rb5HbeOhhUlOcoKvu+v06xH9o13pFKanZsLlG+GgrGnQWg98BBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T12:38:40.491189Z","bundle_sha256":"1ee19ca5c011ad894a4fc92fa0e5ce3bce948083217617dfb3731d6f87f08eb1"}}