{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:7PJ7EAQ6SGCEETCN35NEUIB6ZQ","short_pith_number":"pith:7PJ7EAQ6","canonical_record":{"source":{"id":"1211.5562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-11-23T17:43:59Z","cross_cats_sorted":["math.IT","stat.AP"],"title_canon_sha256":"9b83bff393a6b25898d8387ec7ee16212e1f15e2a169841bc1f92b0fc19fcac0","abstract_canon_sha256":"ab533f426f138aa31bd78bf90b2934e50d123d77b61121fff5ffd94505d69854"},"schema_version":"1.0"},"canonical_sha256":"fbd3f2021e9184424c4ddf5a4a203ecc36512c52242a0e177c4a29d88c6eb00a","source":{"kind":"arxiv","id":"1211.5562","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5562","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5562v2","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5562","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"pith_short_12","alias_value":"7PJ7EAQ6SGCE","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7PJ7EAQ6SGCEETCN","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7PJ7EAQ6","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:7PJ7EAQ6SGCEETCN35NEUIB6ZQ","target":"record","payload":{"canonical_record":{"source":{"id":"1211.5562","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-11-23T17:43:59Z","cross_cats_sorted":["math.IT","stat.AP"],"title_canon_sha256":"9b83bff393a6b25898d8387ec7ee16212e1f15e2a169841bc1f92b0fc19fcac0","abstract_canon_sha256":"ab533f426f138aa31bd78bf90b2934e50d123d77b61121fff5ffd94505d69854"},"schema_version":"1.0"},"canonical_sha256":"fbd3f2021e9184424c4ddf5a4a203ecc36512c52242a0e177c4a29d88c6eb00a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:14:50.161255Z","signature_b64":"SSh8HvBXp2CEtQDZCQ+Cw0TmOknmhSbtqFmwNwxIujnbaHF5Ty/DA4ZdPKax7rX4TgViFG0ccI9hPousQ59DDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fbd3f2021e9184424c4ddf5a4a203ecc36512c52242a0e177c4a29d88c6eb00a","last_reissued_at":"2026-05-18T03:14:50.160443Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:14:50.160443Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.5562","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:14:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8RU13mjPxSnHAndeZstehedmNG21WnrU19n2KK6cNzCr8cQC01JOo8zGshiIZxM98eBxOpPs8bvOhyHGf3xqBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T20:55:40.757536Z"},"content_sha256":"702fe9b08f642fda9df0041145b32782a7fc6c2efceeb7e011569284af1496f9","schema_version":"1.0","event_id":"sha256:702fe9b08f642fda9df0041145b32782a7fc6c2efceeb7e011569284af1496f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:7PJ7EAQ6SGCEETCN35NEUIB6ZQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectrum Sensing using Distributed Sequential Detection via Noisy Reporting MAC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT","stat.AP"],"primary_cat":"cs.IT","authors_text":"Jithin K. Sreedharan, Vinod Sharma","submitted_at":"2012-11-23T17:43:59Z","abstract_excerpt":"This paper considers cooperative spectrum sensing algorithms for Cognitive Radios which focus on reducing the number of samples to make a reliable detection. We develop an energy efficient detector with low detection delay using decentralized sequential hypothesis testing. Our algorithm at the Cognitive Radios employs an asynchronous transmission scheme which takes into account the noise at the fusion center. We start with a distributed algorithm, DualSPRT, in which Cognitive Radios sequentially collect the observations, make local decisions using SPRT (Sequential Probability Ratio Test) and s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5562","kind":"arxiv","version":2},"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":"2026-05-18T03:14:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5qpvCZWAnLHT/zh0KEKfP75GUSBmlbYuB6V+4db7ggaxqdzmZhsWYszGB3m2vUUMTrZhoP1ZBF1SRnzA7hq+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T20:55:40.757885Z"},"content_sha256":"7fc6c4c0d65c833fb0d322f8f7d376f42ea7b175b120eb4edbe9aeb86c1fb49e","schema_version":"1.0","event_id":"sha256:7fc6c4c0d65c833fb0d322f8f7d376f42ea7b175b120eb4edbe9aeb86c1fb49e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ/bundle.json","state_url":"https://pith.science/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ/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":"2026-06-23T20:55:40Z","links":{"resolver":"https://pith.science/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ","bundle":"https://pith.science/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ/bundle.json","state":"https://pith.science/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7PJ7EAQ6SGCEETCN35NEUIB6ZQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:7PJ7EAQ6SGCEETCN35NEUIB6ZQ","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":"ab533f426f138aa31bd78bf90b2934e50d123d77b61121fff5ffd94505d69854","cross_cats_sorted":["math.IT","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-11-23T17:43:59Z","title_canon_sha256":"9b83bff393a6b25898d8387ec7ee16212e1f15e2a169841bc1f92b0fc19fcac0"},"schema_version":"1.0","source":{"id":"1211.5562","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.5562","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"arxiv_version","alias_value":"1211.5562v2","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.5562","created_at":"2026-05-18T03:14:50Z"},{"alias_kind":"pith_short_12","alias_value":"7PJ7EAQ6SGCE","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"7PJ7EAQ6SGCEETCN","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"7PJ7EAQ6","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:7fc6c4c0d65c833fb0d322f8f7d376f42ea7b175b120eb4edbe9aeb86c1fb49e","target":"graph","created_at":"2026-05-18T03:14:50Z","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":"This paper considers cooperative spectrum sensing algorithms for Cognitive Radios which focus on reducing the number of samples to make a reliable detection. We develop an energy efficient detector with low detection delay using decentralized sequential hypothesis testing. Our algorithm at the Cognitive Radios employs an asynchronous transmission scheme which takes into account the noise at the fusion center. We start with a distributed algorithm, DualSPRT, in which Cognitive Radios sequentially collect the observations, make local decisions using SPRT (Sequential Probability Ratio Test) and s","authors_text":"Jithin K. Sreedharan, Vinod Sharma","cross_cats":["math.IT","stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-11-23T17:43:59Z","title":"Spectrum Sensing using Distributed Sequential Detection via Noisy Reporting MAC"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.5562","kind":"arxiv","version":2},"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":"sha256:702fe9b08f642fda9df0041145b32782a7fc6c2efceeb7e011569284af1496f9","target":"record","created_at":"2026-05-18T03:14:50Z","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":"ab533f426f138aa31bd78bf90b2934e50d123d77b61121fff5ffd94505d69854","cross_cats_sorted":["math.IT","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-11-23T17:43:59Z","title_canon_sha256":"9b83bff393a6b25898d8387ec7ee16212e1f15e2a169841bc1f92b0fc19fcac0"},"schema_version":"1.0","source":{"id":"1211.5562","kind":"arxiv","version":2}},"canonical_sha256":"fbd3f2021e9184424c4ddf5a4a203ecc36512c52242a0e177c4a29d88c6eb00a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fbd3f2021e9184424c4ddf5a4a203ecc36512c52242a0e177c4a29d88c6eb00a","first_computed_at":"2026-05-18T03:14:50.160443Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:14:50.160443Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SSh8HvBXp2CEtQDZCQ+Cw0TmOknmhSbtqFmwNwxIujnbaHF5Ty/DA4ZdPKax7rX4TgViFG0ccI9hPousQ59DDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:14:50.161255Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.5562","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:702fe9b08f642fda9df0041145b32782a7fc6c2efceeb7e011569284af1496f9","sha256:7fc6c4c0d65c833fb0d322f8f7d376f42ea7b175b120eb4edbe9aeb86c1fb49e"],"state_sha256":"528a0a4b0c57413e1a949c549b1155a9d19be02b5fdfca3753ce49320ff6ee76"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ev+BjjAAL8EUHyHb/lh0rpHR3XFiyGgzcz8i9RY/0bNQXNteiByjzYdlGf3MDWQlJaKbWmyTSRBkzeeGTT5+DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T20:55:40.759903Z","bundle_sha256":"7566930df135062bcecd43b3016e741abb23ada8c69d9f3a33ae947d37162390"}}