{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:AATOKVET5LBBXGVPOFU2Z7L5KU","short_pith_number":"pith:AATOKVET","canonical_record":{"source":{"id":"1608.00557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-02T12:50:01Z","cross_cats_sorted":["cs.SY","physics.data-an"],"title_canon_sha256":"22dc595e8c5b0e81c1891d71a9d6921125234af5a94023541cceae7d990b7ef1","abstract_canon_sha256":"45e0f0c93654fc4fa231a41f88ddaea9665b4e02ebdefbf3c094bba1412c4dab"},"schema_version":"1.0"},"canonical_sha256":"0026e55493eac21b9aaf7169acfd7d552cb67f6583b5ac06a9486cc36a9e522e","source":{"kind":"arxiv","id":"1608.00557","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.00557","created_at":"2026-05-18T01:10:11Z"},{"alias_kind":"arxiv_version","alias_value":"1608.00557v1","created_at":"2026-05-18T01:10:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.00557","created_at":"2026-05-18T01:10:11Z"},{"alias_kind":"pith_short_12","alias_value":"AATOKVET5LBB","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"AATOKVET5LBBXGVP","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"AATOKVET","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:AATOKVET5LBBXGVPOFU2Z7L5KU","target":"record","payload":{"canonical_record":{"source":{"id":"1608.00557","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-02T12:50:01Z","cross_cats_sorted":["cs.SY","physics.data-an"],"title_canon_sha256":"22dc595e8c5b0e81c1891d71a9d6921125234af5a94023541cceae7d990b7ef1","abstract_canon_sha256":"45e0f0c93654fc4fa231a41f88ddaea9665b4e02ebdefbf3c094bba1412c4dab"},"schema_version":"1.0"},"canonical_sha256":"0026e55493eac21b9aaf7169acfd7d552cb67f6583b5ac06a9486cc36a9e522e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:11.460592Z","signature_b64":"vzK8WNHrmcK5bmRdSFiAdKRQJmdxMjBQ4CuOxdkeoOTvEhwgXYREvwRMpa6hTzQ/dyC82ajdeEVs0ctbadCkCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0026e55493eac21b9aaf7169acfd7d552cb67f6583b5ac06a9486cc36a9e522e","last_reissued_at":"2026-05-18T01:10:11.460141Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:11.460141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.00557","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":"2026-05-18T01:10:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yrPMhAtUQtE65QaNBa5Wpg+OSuxjlcaVA/kCc4qtGjxVmo8COldrrHV46QRzfkPvfCFWMn8n43eanmjKQG8cBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:39:36.540670Z"},"content_sha256":"775302e642a9ff9d456795c7f01fa13a2107836552751d6af500fba63f96b8af","schema_version":"1.0","event_id":"sha256:775302e642a9ff9d456795c7f01fa13a2107836552751d6af500fba63f96b8af"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:AATOKVET5LBBXGVPOFU2Z7L5KU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Robust and Scalable Tracking of Radiation Sources with Cheap Binary Proximity Sensors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY","physics.data-an"],"primary_cat":"math.OC","authors_text":"Henry E. Baidoo-Williams","submitted_at":"2016-08-02T12:50:01Z","abstract_excerpt":"We present a new approach to tracking of radiation sources moving on smooth trajectories which can be approximated with piece-wise linear joins or piece-wise linear parabolas. We employ the use of cheap binary proximity sensors which only indicate when a radiation source enters and leaves its sensing range. We present two separate cases. The first is considering that the trajectory can be approximated with piece-wise linear joins. We develop a novel scalable approach in terms of the number of sensors required. Robustness analysis is done with respect to uncertainties in the timing recordings b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.00557","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":"2026-05-18T01:10:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KyRJgSZja+nVRrgRSBPKK6ZPndX2DQTWsdXvEdltk/nn2Pax1pbI25SQ9cNFkHNsEQhpgZaK4Av70N8S7T4rCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T14:39:36.541026Z"},"content_sha256":"d8046bf78c890de5998f8af71c15bf3aa56eb0c1708d85d9b39741108810f647","schema_version":"1.0","event_id":"sha256:d8046bf78c890de5998f8af71c15bf3aa56eb0c1708d85d9b39741108810f647"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AATOKVET5LBBXGVPOFU2Z7L5KU/bundle.json","state_url":"https://pith.science/pith/AATOKVET5LBBXGVPOFU2Z7L5KU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AATOKVET5LBBXGVPOFU2Z7L5KU/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":"2026-06-01T14:39:36Z","links":{"resolver":"https://pith.science/pith/AATOKVET5LBBXGVPOFU2Z7L5KU","bundle":"https://pith.science/pith/AATOKVET5LBBXGVPOFU2Z7L5KU/bundle.json","state":"https://pith.science/pith/AATOKVET5LBBXGVPOFU2Z7L5KU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AATOKVET5LBBXGVPOFU2Z7L5KU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:AATOKVET5LBBXGVPOFU2Z7L5KU","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":"45e0f0c93654fc4fa231a41f88ddaea9665b4e02ebdefbf3c094bba1412c4dab","cross_cats_sorted":["cs.SY","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-02T12:50:01Z","title_canon_sha256":"22dc595e8c5b0e81c1891d71a9d6921125234af5a94023541cceae7d990b7ef1"},"schema_version":"1.0","source":{"id":"1608.00557","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.00557","created_at":"2026-05-18T01:10:11Z"},{"alias_kind":"arxiv_version","alias_value":"1608.00557v1","created_at":"2026-05-18T01:10:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.00557","created_at":"2026-05-18T01:10:11Z"},{"alias_kind":"pith_short_12","alias_value":"AATOKVET5LBB","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"AATOKVET5LBBXGVP","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"AATOKVET","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:d8046bf78c890de5998f8af71c15bf3aa56eb0c1708d85d9b39741108810f647","target":"graph","created_at":"2026-05-18T01:10:11Z","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":"We present a new approach to tracking of radiation sources moving on smooth trajectories which can be approximated with piece-wise linear joins or piece-wise linear parabolas. We employ the use of cheap binary proximity sensors which only indicate when a radiation source enters and leaves its sensing range. We present two separate cases. The first is considering that the trajectory can be approximated with piece-wise linear joins. We develop a novel scalable approach in terms of the number of sensors required. Robustness analysis is done with respect to uncertainties in the timing recordings b","authors_text":"Henry E. Baidoo-Williams","cross_cats":["cs.SY","physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-02T12:50:01Z","title":"Robust and Scalable Tracking of Radiation Sources with Cheap Binary Proximity Sensors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.00557","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":"sha256:775302e642a9ff9d456795c7f01fa13a2107836552751d6af500fba63f96b8af","target":"record","created_at":"2026-05-18T01:10:11Z","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":"45e0f0c93654fc4fa231a41f88ddaea9665b4e02ebdefbf3c094bba1412c4dab","cross_cats_sorted":["cs.SY","physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2016-08-02T12:50:01Z","title_canon_sha256":"22dc595e8c5b0e81c1891d71a9d6921125234af5a94023541cceae7d990b7ef1"},"schema_version":"1.0","source":{"id":"1608.00557","kind":"arxiv","version":1}},"canonical_sha256":"0026e55493eac21b9aaf7169acfd7d552cb67f6583b5ac06a9486cc36a9e522e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0026e55493eac21b9aaf7169acfd7d552cb67f6583b5ac06a9486cc36a9e522e","first_computed_at":"2026-05-18T01:10:11.460141Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:11.460141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vzK8WNHrmcK5bmRdSFiAdKRQJmdxMjBQ4CuOxdkeoOTvEhwgXYREvwRMpa6hTzQ/dyC82ajdeEVs0ctbadCkCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:11.460592Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.00557","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:775302e642a9ff9d456795c7f01fa13a2107836552751d6af500fba63f96b8af","sha256:d8046bf78c890de5998f8af71c15bf3aa56eb0c1708d85d9b39741108810f647"],"state_sha256":"3902378caa214c4ab1b6ed77d7d6fde0b2781e66c92544a7b42095a6b6eb0c25"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uavM8jwfds1c0iRvfxVm/ow5+10d4TdHMbK5vb9Em0+gaT2LEX4UHbSzerdIYMyRDBpFct2T+erspux3BJFHCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T14:39:36.543114Z","bundle_sha256":"6b542078fc768418746d94f0a8db5849eedd2488816223be6102ece1a9aef057"}}