{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:EOJZW7ACSPT7MPAT6UJ7EYGE5I","short_pith_number":"pith:EOJZW7AC","canonical_record":{"source":{"id":"2001.02482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-01-08T12:41:47Z","cross_cats_sorted":["cs.NI","math.IT"],"title_canon_sha256":"5ab554b8062c466ae436f63616513105baadedba5c3fc11b28b739cbe77e4fc3","abstract_canon_sha256":"ad5353712eb53cd17fc23cf5f2d14b937b365f5180d1ef3fe2e724ce85e8f390"},"schema_version":"1.0"},"canonical_sha256":"23939b7c0293e7f63c13f513f260c4ea3fef85cbb40566edabee69129c12e898","source":{"kind":"arxiv","id":"2001.02482","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.02482","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"arxiv_version","alias_value":"2001.02482v1","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.02482","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"pith_short_12","alias_value":"EOJZW7ACSPT7","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"pith_short_16","alias_value":"EOJZW7ACSPT7MPAT","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"pith_short_8","alias_value":"EOJZW7AC","created_at":"2026-07-05T00:32:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:EOJZW7ACSPT7MPAT6UJ7EYGE5I","target":"record","payload":{"canonical_record":{"source":{"id":"2001.02482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-01-08T12:41:47Z","cross_cats_sorted":["cs.NI","math.IT"],"title_canon_sha256":"5ab554b8062c466ae436f63616513105baadedba5c3fc11b28b739cbe77e4fc3","abstract_canon_sha256":"ad5353712eb53cd17fc23cf5f2d14b937b365f5180d1ef3fe2e724ce85e8f390"},"schema_version":"1.0"},"canonical_sha256":"23939b7c0293e7f63c13f513f260c4ea3fef85cbb40566edabee69129c12e898","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:32:18.457266Z","signature_b64":"39xtPntBr2DoP12RCCo5ZDZksrO+Pior7tOT6c31cFiX0p40zum+ZP9nAGb0Bv+Y65Hff6pFaJSsivTGB62hDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23939b7c0293e7f63c13f513f260c4ea3fef85cbb40566edabee69129c12e898","last_reissued_at":"2026-07-05T00:32:18.456826Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:32:18.456826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.02482","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":"2026-07-05T00:32:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h0g16+KTyEKVOgpvREBQIb3altlPhJnmtt/fPTTl9osnLhRZSryxde/CxJWh+2XAfxiQcMQ04UeS4ZU+fm7QDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:51:51.668150Z"},"content_sha256":"4c898b7abc3749396a5ae07aad7ec71392239a8b34167383005a85cca66c52a1","schema_version":"1.0","event_id":"sha256:4c898b7abc3749396a5ae07aad7ec71392239a8b34167383005a85cca66c52a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:EOJZW7ACSPT7MPAT6UJ7EYGE5I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Minimizing the Age of Information of Cognitive Radio-Based IoT Systems Under A Collision Constraint","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NI","math.IT"],"primary_cat":"cs.IT","authors_text":"Branka Vucetic, He Chen, Qian Wang, Yifan Gu, Yonghui Li","submitted_at":"2020-01-08T12:41:47Z","abstract_excerpt":"This paper considers a cognitive radio-based IoT monitoring system, consisting of an IoT device that aims to update its measurement to a destination using cognitive radio technique. Specifically, the IoT device as a secondary user (SIoT), seeks and exploits the spectrum opportunities of the licensed band vacated by its primary user (PU) to deliver status updates without causing visible effects to the licensed operation. In this context, the SIoT should carefully make use of the licensed band and schedule when to transmit to maintain the timeliness of the status update. We adopt a recent metric"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.02482","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/2001.02482/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":"2026-07-05T00:32:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PEzrK8oq6j40T5iwSun/GVY/dmkSYn+YaAzWluhoFg9Q72vXGt9Ftiu4wA0dMyaMFgaugNrUYngau2OLG3Z4Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T22:51:51.668650Z"},"content_sha256":"402996395b2626e359ff3beeeea18666e887b67af49d6cbaf01246fcb6853059","schema_version":"1.0","event_id":"sha256:402996395b2626e359ff3beeeea18666e887b67af49d6cbaf01246fcb6853059"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I/bundle.json","state_url":"https://pith.science/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I/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":"2026-08-12T22:51:51Z","links":{"resolver":"https://pith.science/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I","bundle":"https://pith.science/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I/bundle.json","state":"https://pith.science/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EOJZW7ACSPT7MPAT6UJ7EYGE5I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:EOJZW7ACSPT7MPAT6UJ7EYGE5I","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":"ad5353712eb53cd17fc23cf5f2d14b937b365f5180d1ef3fe2e724ce85e8f390","cross_cats_sorted":["cs.NI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-01-08T12:41:47Z","title_canon_sha256":"5ab554b8062c466ae436f63616513105baadedba5c3fc11b28b739cbe77e4fc3"},"schema_version":"1.0","source":{"id":"2001.02482","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.02482","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"arxiv_version","alias_value":"2001.02482v1","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.02482","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"pith_short_12","alias_value":"EOJZW7ACSPT7","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"pith_short_16","alias_value":"EOJZW7ACSPT7MPAT","created_at":"2026-07-05T00:32:18Z"},{"alias_kind":"pith_short_8","alias_value":"EOJZW7AC","created_at":"2026-07-05T00:32:18Z"}],"graph_snapshots":[{"event_id":"sha256:402996395b2626e359ff3beeeea18666e887b67af49d6cbaf01246fcb6853059","target":"graph","created_at":"2026-07-05T00:32:18Z","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/2001.02482/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper considers a cognitive radio-based IoT monitoring system, consisting of an IoT device that aims to update its measurement to a destination using cognitive radio technique. Specifically, the IoT device as a secondary user (SIoT), seeks and exploits the spectrum opportunities of the licensed band vacated by its primary user (PU) to deliver status updates without causing visible effects to the licensed operation. In this context, the SIoT should carefully make use of the licensed band and schedule when to transmit to maintain the timeliness of the status update. We adopt a recent metric","authors_text":"Branka Vucetic, He Chen, Qian Wang, Yifan Gu, Yonghui Li","cross_cats":["cs.NI","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-01-08T12:41:47Z","title":"Minimizing the Age of Information of Cognitive Radio-Based IoT Systems Under A Collision Constraint"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.02482","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":"sha256:4c898b7abc3749396a5ae07aad7ec71392239a8b34167383005a85cca66c52a1","target":"record","created_at":"2026-07-05T00:32:18Z","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":"ad5353712eb53cd17fc23cf5f2d14b937b365f5180d1ef3fe2e724ce85e8f390","cross_cats_sorted":["cs.NI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2020-01-08T12:41:47Z","title_canon_sha256":"5ab554b8062c466ae436f63616513105baadedba5c3fc11b28b739cbe77e4fc3"},"schema_version":"1.0","source":{"id":"2001.02482","kind":"arxiv","version":1}},"canonical_sha256":"23939b7c0293e7f63c13f513f260c4ea3fef85cbb40566edabee69129c12e898","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23939b7c0293e7f63c13f513f260c4ea3fef85cbb40566edabee69129c12e898","first_computed_at":"2026-07-05T00:32:18.456826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:32:18.456826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"39xtPntBr2DoP12RCCo5ZDZksrO+Pior7tOT6c31cFiX0p40zum+ZP9nAGb0Bv+Y65Hff6pFaJSsivTGB62hDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:32:18.457266Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.02482","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c898b7abc3749396a5ae07aad7ec71392239a8b34167383005a85cca66c52a1","sha256:402996395b2626e359ff3beeeea18666e887b67af49d6cbaf01246fcb6853059"],"state_sha256":"fb84f2eb30acd725a58d5b3221ddee8f08004486693d2b140e811e633918c326"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oo6l1HaWbPUrKYFE9rWclu14QKtUgB8xgk6kjWGzevgIdg8l5kVqUOqqA0Gozq6bFTRlk/pAnZyShsN0lM2/Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T22:51:51.673811Z","bundle_sha256":"3161b011ecbe8275577324e8d3189824c566e3a778aef500de41d80c43d60946"}}