{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IY23WTR4XM5C4BQCYBSWJBHB2I","short_pith_number":"pith:IY23WTR4","canonical_record":{"source":{"id":"1907.11205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-07-25T17:08:30Z","cross_cats_sorted":[],"title_canon_sha256":"c6257d250b2c1cbc154620ff7479b5423b8a8c958642e67a877599d85cb6c93d","abstract_canon_sha256":"5c18480c7156e6ca38ecdd2e8d761a648735314e62c494a7bdfb53b698b61ba8"},"schema_version":"1.0"},"canonical_sha256":"4635bb4e3cbb3a2e0602c0656484e1d223b6c6cd9a0ddcc63d57782566794889","source":{"kind":"arxiv","id":"1907.11205","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11205","created_at":"2026-05-17T23:39:32Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11205v1","created_at":"2026-05-17T23:39:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11205","created_at":"2026-05-17T23:39:32Z"},{"alias_kind":"pith_short_12","alias_value":"IY23WTR4XM5C","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"IY23WTR4XM5C4BQC","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"IY23WTR4","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IY23WTR4XM5C4BQCYBSWJBHB2I","target":"record","payload":{"canonical_record":{"source":{"id":"1907.11205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-07-25T17:08:30Z","cross_cats_sorted":[],"title_canon_sha256":"c6257d250b2c1cbc154620ff7479b5423b8a8c958642e67a877599d85cb6c93d","abstract_canon_sha256":"5c18480c7156e6ca38ecdd2e8d761a648735314e62c494a7bdfb53b698b61ba8"},"schema_version":"1.0"},"canonical_sha256":"4635bb4e3cbb3a2e0602c0656484e1d223b6c6cd9a0ddcc63d57782566794889","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:32.962649Z","signature_b64":"CMkg0bIUn3QPa8QW3JQ0IgVJotwItBw8iN3vx1crsZ46LqJMQ+0aiApaEAN1JwEC9q6Vid7Gz/4XH0wVqFSBCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4635bb4e3cbb3a2e0602c0656484e1d223b6c6cd9a0ddcc63d57782566794889","last_reissued_at":"2026-05-17T23:39:32.961975Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:32.961975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.11205","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":"2026-05-17T23:39:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VVVfHCJxf2DKuOKUXLANpxV6VeF2saxBzntii+eh1jrdZfXubhgq47zPXYObkN+fPfCkL5lZGwoTGZy27y0CCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T17:55:54.503182Z"},"content_sha256":"2bd040f86f0ea7de7de8cd80888341860bc1284be11df30d3646c8c6dc9aa2de","schema_version":"1.0","event_id":"sha256:2bd040f86f0ea7de7de8cd80888341860bc1284be11df30d3646c8c6dc9aa2de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IY23WTR4XM5C4BQCYBSWJBHB2I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Localization in Ultra Narrow Band IoT Networks: Design Guidelines and Trade-Offs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.NI","authors_text":"Alessandro Chiumento, Hazem Sallouha, Sofie Pollin, Sreeraj Rajendran","submitted_at":"2019-07-25T17:08:30Z","abstract_excerpt":"Localization in long-range Internet of Things networks is a challenging task, mainly due to the long distances and low bandwidth used. Moreover, the cost, power, and size limitations restrict the integration of a GPS receiver in each device. In this work, we introduce a novel received signal strength indicator (RSSI) based localization solution for ultra narrow band (UNB) long-range IoT networks such as Sigfox. The essence of our approach is to leverage the existence of a few GPS-enabled sensors (GSNs) in the network to split the wide coverage into classes, enabling RSSI based fingerprinting o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11205","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":"2026-05-17T23:39:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VA2go6G77AkmhwBfn/3fiqytau0hx0oApVg/1GYpPowDPsH+A04ToudEA/TQMB5LSrFpEFAYT72HbimqqnbADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T17:55:54.503646Z"},"content_sha256":"b9da7249b226ccadc183f6fe5cb4cfcf66056f6ddce03a8d7aecec2698e1dbb5","schema_version":"1.0","event_id":"sha256:b9da7249b226ccadc183f6fe5cb4cfcf66056f6ddce03a8d7aecec2698e1dbb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IY23WTR4XM5C4BQCYBSWJBHB2I/bundle.json","state_url":"https://pith.science/pith/IY23WTR4XM5C4BQCYBSWJBHB2I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IY23WTR4XM5C4BQCYBSWJBHB2I/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":"2026-05-21T17:55:54Z","links":{"resolver":"https://pith.science/pith/IY23WTR4XM5C4BQCYBSWJBHB2I","bundle":"https://pith.science/pith/IY23WTR4XM5C4BQCYBSWJBHB2I/bundle.json","state":"https://pith.science/pith/IY23WTR4XM5C4BQCYBSWJBHB2I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IY23WTR4XM5C4BQCYBSWJBHB2I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IY23WTR4XM5C4BQCYBSWJBHB2I","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":"5c18480c7156e6ca38ecdd2e8d761a648735314e62c494a7bdfb53b698b61ba8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-07-25T17:08:30Z","title_canon_sha256":"c6257d250b2c1cbc154620ff7479b5423b8a8c958642e67a877599d85cb6c93d"},"schema_version":"1.0","source":{"id":"1907.11205","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.11205","created_at":"2026-05-17T23:39:32Z"},{"alias_kind":"arxiv_version","alias_value":"1907.11205v1","created_at":"2026-05-17T23:39:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.11205","created_at":"2026-05-17T23:39:32Z"},{"alias_kind":"pith_short_12","alias_value":"IY23WTR4XM5C","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"IY23WTR4XM5C4BQC","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"IY23WTR4","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:b9da7249b226ccadc183f6fe5cb4cfcf66056f6ddce03a8d7aecec2698e1dbb5","target":"graph","created_at":"2026-05-17T23:39:32Z","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":"Localization in long-range Internet of Things networks is a challenging task, mainly due to the long distances and low bandwidth used. Moreover, the cost, power, and size limitations restrict the integration of a GPS receiver in each device. In this work, we introduce a novel received signal strength indicator (RSSI) based localization solution for ultra narrow band (UNB) long-range IoT networks such as Sigfox. The essence of our approach is to leverage the existence of a few GPS-enabled sensors (GSNs) in the network to split the wide coverage into classes, enabling RSSI based fingerprinting o","authors_text":"Alessandro Chiumento, Hazem Sallouha, Sofie Pollin, Sreeraj Rajendran","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-07-25T17:08:30Z","title":"Localization in Ultra Narrow Band IoT Networks: Design Guidelines and Trade-Offs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.11205","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":"sha256:2bd040f86f0ea7de7de8cd80888341860bc1284be11df30d3646c8c6dc9aa2de","target":"record","created_at":"2026-05-17T23:39:32Z","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":"5c18480c7156e6ca38ecdd2e8d761a648735314e62c494a7bdfb53b698b61ba8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2019-07-25T17:08:30Z","title_canon_sha256":"c6257d250b2c1cbc154620ff7479b5423b8a8c958642e67a877599d85cb6c93d"},"schema_version":"1.0","source":{"id":"1907.11205","kind":"arxiv","version":1}},"canonical_sha256":"4635bb4e3cbb3a2e0602c0656484e1d223b6c6cd9a0ddcc63d57782566794889","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4635bb4e3cbb3a2e0602c0656484e1d223b6c6cd9a0ddcc63d57782566794889","first_computed_at":"2026-05-17T23:39:32.961975Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:32.961975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CMkg0bIUn3QPa8QW3JQ0IgVJotwItBw8iN3vx1crsZ46LqJMQ+0aiApaEAN1JwEC9q6Vid7Gz/4XH0wVqFSBCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:32.962649Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.11205","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2bd040f86f0ea7de7de8cd80888341860bc1284be11df30d3646c8c6dc9aa2de","sha256:b9da7249b226ccadc183f6fe5cb4cfcf66056f6ddce03a8d7aecec2698e1dbb5"],"state_sha256":"251b50cce45d1ca496fd4de5f400728570c97bd3cb045d2b3837e3b86d9a0eef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xV7FFZCr9Pvfcgb6fqWpNLbjVkF40IKCNgxfx1ilWQvma7zkKdapOUexAogmy8qe0W6vv6r3Pabuitq/idijAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T17:55:54.506237Z","bundle_sha256":"003a8a215c6890d527b5e06398a1599cd0ff7a28c403960d19bcead50403556e"}}