{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:TRHIMKITA5KPR3FDUAW3ZUMRTX","short_pith_number":"pith:TRHIMKIT","canonical_record":{"source":{"id":"1908.11207","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-27T13:44:34Z","cross_cats_sorted":["physics.data-an"],"title_canon_sha256":"50e3c615fe012f1341f34fde8c731aa8fefe842df04977ea6f72e9a4f4c7997b","abstract_canon_sha256":"79bdd0d060228d00fee8492d2b5818e58f16a986c8edc44c9749225d412bfd3d"},"schema_version":"1.0"},"canonical_sha256":"9c4e8629130754f8eca3a02dbcd1919dfc97ea3750fd1c34417ed817e01e1511","source":{"kind":"arxiv","id":"1908.11207","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.11207","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"arxiv_version","alias_value":"1908.11207v1","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.11207","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"pith_short_12","alias_value":"TRHIMKITA5KP","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"pith_short_16","alias_value":"TRHIMKITA5KPR3FD","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"pith_short_8","alias_value":"TRHIMKIT","created_at":"2026-07-05T02:21:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:TRHIMKITA5KPR3FDUAW3ZUMRTX","target":"record","payload":{"canonical_record":{"source":{"id":"1908.11207","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-27T13:44:34Z","cross_cats_sorted":["physics.data-an"],"title_canon_sha256":"50e3c615fe012f1341f34fde8c731aa8fefe842df04977ea6f72e9a4f4c7997b","abstract_canon_sha256":"79bdd0d060228d00fee8492d2b5818e58f16a986c8edc44c9749225d412bfd3d"},"schema_version":"1.0"},"canonical_sha256":"9c4e8629130754f8eca3a02dbcd1919dfc97ea3750fd1c34417ed817e01e1511","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:21:49.872776Z","signature_b64":"ALIPJrYA1TJ+JR+q9o+uUInLCW79WYLDRffz7o9+RUY/zn7seK3SkL+XEkiSibIvZhFEAwUdwuQMKRxGcZ9tAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9c4e8629130754f8eca3a02dbcd1919dfc97ea3750fd1c34417ed817e01e1511","last_reissued_at":"2026-07-05T02:21:49.872346Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:21:49.872346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.11207","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":"2026-07-05T02:21:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3JCkRGjca4zJPPe+qvP34P3KFgDaUVyGH43Yz/Jyb5SGybUmXOSPho7Ox4ceMdayg3xU6zq2HqKdF8V/AQhUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:35:39.743442Z"},"content_sha256":"fe2e972e2a3e4b27d71693452bfa7d2da5aceefff47ebedcaf95d21b8713d4e5","schema_version":"1.0","event_id":"sha256:fe2e972e2a3e4b27d71693452bfa7d2da5aceefff47ebedcaf95d21b8713d4e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:TRHIMKITA5KPR3FDUAW3ZUMRTX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Threat determination for radiation detection from the Remote Sensing Laboratory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.data-an"],"primary_cat":"eess.SP","authors_text":"Emma Hague, Eric Moore, Johanna Turk, Tom McCullough, William P. Ford","submitted_at":"2019-08-27T13:44:34Z","abstract_excerpt":"The ability to search for radiation sources is of interest to the Homeland Security community. The hope is to find any radiation sources which may pose a reasonable chance for harm in a terrorist act. The best chance of success for search operations generally comes with fielding as many detection systems as possible. In doing this, the hoped for encounter with the threat source will inevitably be buried in an even larger number of encounters with non-threatening radiation sources commonly used for many medical and industrial use. The problem then becomes effectively filtering the non-threateni"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.11207","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/1908.11207/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":"2026-07-05T02:21:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GkFfMm1e4y+I5J5l4/lGBLyU4NPvDFjFj1HcZ0aMtoVW1PGdxEeMCHx3EEWGmiYoWWx+JLtXF3/bYTWHLC3kDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:35:39.744598Z"},"content_sha256":"5fedf0c44be874568d207e3604fe3ae2d6b7ad836bebf00b0dad132e34580e5b","schema_version":"1.0","event_id":"sha256:5fedf0c44be874568d207e3604fe3ae2d6b7ad836bebf00b0dad132e34580e5b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX/bundle.json","state_url":"https://pith.science/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX/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":"2026-08-19T18:35:39Z","links":{"resolver":"https://pith.science/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX","bundle":"https://pith.science/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX/bundle.json","state":"https://pith.science/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TRHIMKITA5KPR3FDUAW3ZUMRTX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:TRHIMKITA5KPR3FDUAW3ZUMRTX","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":"79bdd0d060228d00fee8492d2b5818e58f16a986c8edc44c9749225d412bfd3d","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-27T13:44:34Z","title_canon_sha256":"50e3c615fe012f1341f34fde8c731aa8fefe842df04977ea6f72e9a4f4c7997b"},"schema_version":"1.0","source":{"id":"1908.11207","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.11207","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"arxiv_version","alias_value":"1908.11207v1","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.11207","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"pith_short_12","alias_value":"TRHIMKITA5KP","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"pith_short_16","alias_value":"TRHIMKITA5KPR3FD","created_at":"2026-07-05T02:21:49Z"},{"alias_kind":"pith_short_8","alias_value":"TRHIMKIT","created_at":"2026-07-05T02:21:49Z"}],"graph_snapshots":[{"event_id":"sha256:5fedf0c44be874568d207e3604fe3ae2d6b7ad836bebf00b0dad132e34580e5b","target":"graph","created_at":"2026-07-05T02:21:49Z","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/1908.11207/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ability to search for radiation sources is of interest to the Homeland Security community. The hope is to find any radiation sources which may pose a reasonable chance for harm in a terrorist act. The best chance of success for search operations generally comes with fielding as many detection systems as possible. In doing this, the hoped for encounter with the threat source will inevitably be buried in an even larger number of encounters with non-threatening radiation sources commonly used for many medical and industrial use. The problem then becomes effectively filtering the non-threateni","authors_text":"Emma Hague, Eric Moore, Johanna Turk, Tom McCullough, William P. Ford","cross_cats":["physics.data-an"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-27T13:44:34Z","title":"Threat determination for radiation detection from the Remote Sensing Laboratory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.11207","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:fe2e972e2a3e4b27d71693452bfa7d2da5aceefff47ebedcaf95d21b8713d4e5","target":"record","created_at":"2026-07-05T02:21:49Z","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":"79bdd0d060228d00fee8492d2b5818e58f16a986c8edc44c9749225d412bfd3d","cross_cats_sorted":["physics.data-an"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-08-27T13:44:34Z","title_canon_sha256":"50e3c615fe012f1341f34fde8c731aa8fefe842df04977ea6f72e9a4f4c7997b"},"schema_version":"1.0","source":{"id":"1908.11207","kind":"arxiv","version":1}},"canonical_sha256":"9c4e8629130754f8eca3a02dbcd1919dfc97ea3750fd1c34417ed817e01e1511","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9c4e8629130754f8eca3a02dbcd1919dfc97ea3750fd1c34417ed817e01e1511","first_computed_at":"2026-07-05T02:21:49.872346Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:21:49.872346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ALIPJrYA1TJ+JR+q9o+uUInLCW79WYLDRffz7o9+RUY/zn7seK3SkL+XEkiSibIvZhFEAwUdwuQMKRxGcZ9tAA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:21:49.872776Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.11207","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fe2e972e2a3e4b27d71693452bfa7d2da5aceefff47ebedcaf95d21b8713d4e5","sha256:5fedf0c44be874568d207e3604fe3ae2d6b7ad836bebf00b0dad132e34580e5b"],"state_sha256":"f05764e6c3e3424b49d6e3922285ba471e7525fb728afbd58b815b9c51457703"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9CH/gh5nIN3J4KgvTPGsiI10vwNPg5fVMKhXRgu/xSWz58/oDu9hYdB/IA3+8FwiLlYMrxfZV3W7oOFaxValBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T18:35:39.751924Z","bundle_sha256":"e3c68a986e015f56e3e43c9b559692bdd4fde959b5784036d8fc77cfa2e3f523"}}