{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:EFQAKLBSMXTIK2IIVCXIFWI6UB","short_pith_number":"pith:EFQAKLBS","canonical_record":{"source":{"id":"2311.07394","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-13T15:22:01Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"68716ef3f71f60368b4256e4a15e2c1a2b05c0a4656e7d68eb51a90d975e76bd","abstract_canon_sha256":"6c48fb41de8c3c128de0f129dec4b6d31e1584563d16f08b2b4808241e41da6a"},"schema_version":"1.0"},"canonical_sha256":"2160052c3265e6856908a8ae82d91ea054e14ae690d9d1734520fa4c7cf1e618","source":{"kind":"arxiv","id":"2311.07394","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.07394","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"arxiv_version","alias_value":"2311.07394v2","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.07394","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"pith_short_12","alias_value":"EFQAKLBSMXTI","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"pith_short_16","alias_value":"EFQAKLBSMXTIK2II","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"pith_short_8","alias_value":"EFQAKLBS","created_at":"2026-07-05T07:12:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:EFQAKLBSMXTIK2IIVCXIFWI6UB","target":"record","payload":{"canonical_record":{"source":{"id":"2311.07394","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-13T15:22:01Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"68716ef3f71f60368b4256e4a15e2c1a2b05c0a4656e7d68eb51a90d975e76bd","abstract_canon_sha256":"6c48fb41de8c3c128de0f129dec4b6d31e1584563d16f08b2b4808241e41da6a"},"schema_version":"1.0"},"canonical_sha256":"2160052c3265e6856908a8ae82d91ea054e14ae690d9d1734520fa4c7cf1e618","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:12:38.756934Z","signature_b64":"R6vGWd34lNz1nFuoHnWBLOghAlLT5BchHbTehk4JBK0W/ftxMRLvY6Ja831LSYkHB6yh/s32qvTIp7VFJPh8AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2160052c3265e6856908a8ae82d91ea054e14ae690d9d1734520fa4c7cf1e618","last_reissued_at":"2026-07-05T07:12:38.756500Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:12:38.756500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2311.07394","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":"2026-07-05T07:12:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JGltymYR/Z1TpBdUNiP8ZU/0tlU22F9lvL6GIYLwRVYfI0wpj3KJaQpNuImRgH88jzKdw6Fihu53HLLhm7SfCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:35:54.600994Z"},"content_sha256":"42dbc2ee93765a6d5039eab37c55dd62fc1b05cc52962781b96b1a92b605928a","schema_version":"1.0","event_id":"sha256:42dbc2ee93765a6d5039eab37c55dd62fc1b05cc52962781b96b1a92b605928a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:EFQAKLBSMXTIK2IIVCXIFWI6UB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Transient study using LoTSS -- framework development and preliminary results","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"Antonia Rowlinson, David Ruhe, Iris de Ruiter, Ralph A.M.J. Wijers, Timothy W. Shimwell, Zachary S. Meyers","submitted_at":"2023-11-13T15:22:01Z","abstract_excerpt":"We present a search for transient radio sources on time-scales of seconds to hours at 144 MHz using the LOFAR Two-metre Sky Survey (LoTSS). This search is conducted by examining short time-scale images derived from the LoTSS data. To allow imaging of LoTSS on short time-scales, a novel imaging and filtering strategy is introduced. This includes sky model source subtraction, no cleaning or primary beam correction, a simple source finder, fast filtering schemes and source catalogue matching. This new strategy is first tested by injecting simulated transients, with a range of flux densities and d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.07394","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2311.07394/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":"2026-07-05T07:12:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IEPKjsKMk+XqBHViJ6slmHQ0iu4zPszzob6Xj4BLZ16NJTwMaCO+aPZQW0Mnxx0HqAHg6CcLk6ZrbgG84zY3BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:35:54.601494Z"},"content_sha256":"84892c343f3ff58c253ac4c2dbf1aecc16d71881c4b219baa3d880cde3442bf5","schema_version":"1.0","event_id":"sha256:84892c343f3ff58c253ac4c2dbf1aecc16d71881c4b219baa3d880cde3442bf5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB/bundle.json","state_url":"https://pith.science/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB/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":"2026-08-04T12:35:54Z","links":{"resolver":"https://pith.science/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB","bundle":"https://pith.science/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB/bundle.json","state":"https://pith.science/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFQAKLBSMXTIK2IIVCXIFWI6UB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:EFQAKLBSMXTIK2IIVCXIFWI6UB","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":"6c48fb41de8c3c128de0f129dec4b6d31e1584563d16f08b2b4808241e41da6a","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-13T15:22:01Z","title_canon_sha256":"68716ef3f71f60368b4256e4a15e2c1a2b05c0a4656e7d68eb51a90d975e76bd"},"schema_version":"1.0","source":{"id":"2311.07394","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2311.07394","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"arxiv_version","alias_value":"2311.07394v2","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.07394","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"pith_short_12","alias_value":"EFQAKLBSMXTI","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"pith_short_16","alias_value":"EFQAKLBSMXTIK2II","created_at":"2026-07-05T07:12:38Z"},{"alias_kind":"pith_short_8","alias_value":"EFQAKLBS","created_at":"2026-07-05T07:12:38Z"}],"graph_snapshots":[{"event_id":"sha256:84892c343f3ff58c253ac4c2dbf1aecc16d71881c4b219baa3d880cde3442bf5","target":"graph","created_at":"2026-07-05T07:12:38Z","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/2311.07394/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a search for transient radio sources on time-scales of seconds to hours at 144 MHz using the LOFAR Two-metre Sky Survey (LoTSS). This search is conducted by examining short time-scale images derived from the LoTSS data. To allow imaging of LoTSS on short time-scales, a novel imaging and filtering strategy is introduced. This includes sky model source subtraction, no cleaning or primary beam correction, a simple source finder, fast filtering schemes and source catalogue matching. This new strategy is first tested by injecting simulated transients, with a range of flux densities and d","authors_text":"Antonia Rowlinson, David Ruhe, Iris de Ruiter, Ralph A.M.J. Wijers, Timothy W. Shimwell, Zachary S. Meyers","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-13T15:22:01Z","title":"Transient study using LoTSS -- framework development and preliminary results"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.07394","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":"sha256:42dbc2ee93765a6d5039eab37c55dd62fc1b05cc52962781b96b1a92b605928a","target":"record","created_at":"2026-07-05T07:12:38Z","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":"6c48fb41de8c3c128de0f129dec4b6d31e1584563d16f08b2b4808241e41da6a","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2023-11-13T15:22:01Z","title_canon_sha256":"68716ef3f71f60368b4256e4a15e2c1a2b05c0a4656e7d68eb51a90d975e76bd"},"schema_version":"1.0","source":{"id":"2311.07394","kind":"arxiv","version":2}},"canonical_sha256":"2160052c3265e6856908a8ae82d91ea054e14ae690d9d1734520fa4c7cf1e618","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2160052c3265e6856908a8ae82d91ea054e14ae690d9d1734520fa4c7cf1e618","first_computed_at":"2026-07-05T07:12:38.756500Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:12:38.756500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R6vGWd34lNz1nFuoHnWBLOghAlLT5BchHbTehk4JBK0W/ftxMRLvY6Ja831LSYkHB6yh/s32qvTIp7VFJPh8AA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:12:38.756934Z","signed_message":"canonical_sha256_bytes"},"source_id":"2311.07394","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:42dbc2ee93765a6d5039eab37c55dd62fc1b05cc52962781b96b1a92b605928a","sha256:84892c343f3ff58c253ac4c2dbf1aecc16d71881c4b219baa3d880cde3442bf5"],"state_sha256":"83567d8d998f09e59dd922a14b3e38d980ba891f8a8632f0dd61f464a1e1edf7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VP1wycKCRnxs7gl9swRYGgqDFp8d1xCaOgFLFDBferq2OzvZGE0Iv4Sk98IeIU7kktxiYdq8ye9Goe9ZiMRECg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T12:35:54.605130Z","bundle_sha256":"6d0fb5fa7e7150f3b453662faf30dd6be7ce498ef8feb442d174b8a59e229600"}}