{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:5JMBTPRQK3UDNUVJDJTVKI7MSB","short_pith_number":"pith:5JMBTPRQ","canonical_record":{"source":{"id":"1808.05838","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-08-17T12:26:43Z","cross_cats_sorted":[],"title_canon_sha256":"7da0f3d3742c77dfdd687ec547bb55bb3fda10282fb75406c5113af933f3b11c","abstract_canon_sha256":"1e51c0b2f763d844441bdf120998edcecf8bc8fec314ad2ecc9a9bbfb14669e1"},"schema_version":"1.0"},"canonical_sha256":"ea5819be3056e836d2a91a675523ec905217f9724e6524e4db5ae4ce3f43a26b","source":{"kind":"arxiv","id":"1808.05838","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.05838","created_at":"2026-05-18T00:07:51Z"},{"alias_kind":"arxiv_version","alias_value":"1808.05838v1","created_at":"2026-05-18T00:07:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.05838","created_at":"2026-05-18T00:07:51Z"},{"alias_kind":"pith_short_12","alias_value":"5JMBTPRQK3UD","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5JMBTPRQK3UDNUVJ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5JMBTPRQ","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:5JMBTPRQK3UDNUVJDJTVKI7MSB","target":"record","payload":{"canonical_record":{"source":{"id":"1808.05838","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-08-17T12:26:43Z","cross_cats_sorted":[],"title_canon_sha256":"7da0f3d3742c77dfdd687ec547bb55bb3fda10282fb75406c5113af933f3b11c","abstract_canon_sha256":"1e51c0b2f763d844441bdf120998edcecf8bc8fec314ad2ecc9a9bbfb14669e1"},"schema_version":"1.0"},"canonical_sha256":"ea5819be3056e836d2a91a675523ec905217f9724e6524e4db5ae4ce3f43a26b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:51.962439Z","signature_b64":"+Kc8kWWF7Fybxd2Xm2ue76rtCxTSI8lrfU/lQwBpgBgbfDVgEI5W7alrpMkZTrj7sAe/S0BqT8vGZvXlGOgBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea5819be3056e836d2a91a675523ec905217f9724e6524e4db5ae4ce3f43a26b","last_reissued_at":"2026-05-18T00:07:51.961654Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:51.961654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.05838","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":"2026-05-18T00:07:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k6PAYdiXB6Z86DjnSLantnwfAcGmgp3r4FfG6MZswbgbsC5QTvlSpvY7ALqbByewK95JZpAA/q8ryGjbUiHWBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:32:54.026837Z"},"content_sha256":"794825c4f7ccb62212f87207511bc8c8fa5e4b811fe46fbec9599be5d6f70195","schema_version":"1.0","event_id":"sha256:794825c4f7ccb62212f87207511bc8c8fa5e4b811fe46fbec9599be5d6f70195"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:5JMBTPRQK3UDNUVJDJTVKI7MSB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reverse Flooding: exploiting radio interference for efficient propagation delay compensation in WSN clock synchronization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.NI","authors_text":"Alberto Leva, Alessandro Vittorio Papadopoulos, Federico Terraneo, Martina Maggio, Silvano Seva","submitted_at":"2018-08-17T12:26:43Z","abstract_excerpt":"Clock synchronization is a necessary component in modern distributed systems, especially Wirless Sensor Networks (WSNs). Despite the great effort and the numerous improvements, the existing synchronization schemes do not yet address the cancellation of propagation delays. Up to a few years ago, this was not perceived as a problem, because the time-stamping precision was a more limiting factor for the accuracy achievable with a synchronization scheme. However, the recent introduction of efficient flooding schemes based on constructive interference has greatly improved the achievable accuracy, t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.05838","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":"2026-05-18T00:07:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZLlfjkq/HuCO7c+jnbmg1/qdOhDARjhmQkx+Tclz/9aDb1/Js+ERzQLt+4AHZj6X169FYdq0GGmzEW/ykkSbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:32:54.027543Z"},"content_sha256":"bc17d1523c2779650c3194b6b4c88ab9b8495acb0a35f132ec00089078f44657","schema_version":"1.0","event_id":"sha256:bc17d1523c2779650c3194b6b4c88ab9b8495acb0a35f132ec00089078f44657"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB/bundle.json","state_url":"https://pith.science/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB/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":"2026-06-01T01:32:54Z","links":{"resolver":"https://pith.science/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB","bundle":"https://pith.science/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB/bundle.json","state":"https://pith.science/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5JMBTPRQK3UDNUVJDJTVKI7MSB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:5JMBTPRQK3UDNUVJDJTVKI7MSB","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":"1e51c0b2f763d844441bdf120998edcecf8bc8fec314ad2ecc9a9bbfb14669e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-08-17T12:26:43Z","title_canon_sha256":"7da0f3d3742c77dfdd687ec547bb55bb3fda10282fb75406c5113af933f3b11c"},"schema_version":"1.0","source":{"id":"1808.05838","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.05838","created_at":"2026-05-18T00:07:51Z"},{"alias_kind":"arxiv_version","alias_value":"1808.05838v1","created_at":"2026-05-18T00:07:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.05838","created_at":"2026-05-18T00:07:51Z"},{"alias_kind":"pith_short_12","alias_value":"5JMBTPRQK3UD","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"5JMBTPRQK3UDNUVJ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"5JMBTPRQ","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:bc17d1523c2779650c3194b6b4c88ab9b8495acb0a35f132ec00089078f44657","target":"graph","created_at":"2026-05-18T00:07:51Z","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":"Clock synchronization is a necessary component in modern distributed systems, especially Wirless Sensor Networks (WSNs). Despite the great effort and the numerous improvements, the existing synchronization schemes do not yet address the cancellation of propagation delays. Up to a few years ago, this was not perceived as a problem, because the time-stamping precision was a more limiting factor for the accuracy achievable with a synchronization scheme. However, the recent introduction of efficient flooding schemes based on constructive interference has greatly improved the achievable accuracy, t","authors_text":"Alberto Leva, Alessandro Vittorio Papadopoulos, Federico Terraneo, Martina Maggio, Silvano Seva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-08-17T12:26:43Z","title":"Reverse Flooding: exploiting radio interference for efficient propagation delay compensation in WSN clock synchronization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.05838","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":"sha256:794825c4f7ccb62212f87207511bc8c8fa5e4b811fe46fbec9599be5d6f70195","target":"record","created_at":"2026-05-18T00:07:51Z","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":"1e51c0b2f763d844441bdf120998edcecf8bc8fec314ad2ecc9a9bbfb14669e1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.NI","submitted_at":"2018-08-17T12:26:43Z","title_canon_sha256":"7da0f3d3742c77dfdd687ec547bb55bb3fda10282fb75406c5113af933f3b11c"},"schema_version":"1.0","source":{"id":"1808.05838","kind":"arxiv","version":1}},"canonical_sha256":"ea5819be3056e836d2a91a675523ec905217f9724e6524e4db5ae4ce3f43a26b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea5819be3056e836d2a91a675523ec905217f9724e6524e4db5ae4ce3f43a26b","first_computed_at":"2026-05-18T00:07:51.961654Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:51.961654Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+Kc8kWWF7Fybxd2Xm2ue76rtCxTSI8lrfU/lQwBpgBgbfDVgEI5W7alrpMkZTrj7sAe/S0BqT8vGZvXlGOgBBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:51.962439Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.05838","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:794825c4f7ccb62212f87207511bc8c8fa5e4b811fe46fbec9599be5d6f70195","sha256:bc17d1523c2779650c3194b6b4c88ab9b8495acb0a35f132ec00089078f44657"],"state_sha256":"75ae93377b7886b38e943f059422e4ebe50fec12e4895e56f800519387997c0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z1GcbTRzcDm3KOuWqKUH8PRxVZFMkViLaTRBLfjk+2HH+lz5/IbUN4arBPnhphg35RsEEXsUbGCYf+OQDh+iAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T01:32:54.031735Z","bundle_sha256":"04fa5eb6d705cc2805fda520ba91526fe29302a665b2d6dc2042d4d33eb4af97"}}