{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:D26TEWLKLWWIFJMLC6V3FAHG4R","short_pith_number":"pith:D26TEWLK","canonical_record":{"source":{"id":"2011.02495","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-04T19:00:04Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"9baabfe75c1f94f24129caed24005a41aa5ef2a8126fdf45b4ca789925f663c9","abstract_canon_sha256":"b09e0bc933ee50861303e32279ae4b0c02ed654d9d4fee949302965cce0b129d"},"schema_version":"1.0"},"canonical_sha256":"1ebd32596a5dac82a58b17abb280e6e46feeebdf679bdedc5bcdd99a7bcd1f05","source":{"kind":"arxiv","id":"2011.02495","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.02495","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"arxiv_version","alias_value":"2011.02495v1","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.02495","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"pith_short_12","alias_value":"D26TEWLKLWWI","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"pith_short_16","alias_value":"D26TEWLKLWWIFJML","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"pith_short_8","alias_value":"D26TEWLK","created_at":"2026-07-05T01:49:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:D26TEWLKLWWIFJMLC6V3FAHG4R","target":"record","payload":{"canonical_record":{"source":{"id":"2011.02495","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-04T19:00:04Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"9baabfe75c1f94f24129caed24005a41aa5ef2a8126fdf45b4ca789925f663c9","abstract_canon_sha256":"b09e0bc933ee50861303e32279ae4b0c02ed654d9d4fee949302965cce0b129d"},"schema_version":"1.0"},"canonical_sha256":"1ebd32596a5dac82a58b17abb280e6e46feeebdf679bdedc5bcdd99a7bcd1f05","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:49:21.863643Z","signature_b64":"upyljgk2rTSbYDQvw8gtEKfng4SaA7bCi3VNI2KxI4fHvGILtTFMaUb+ghjvGzsxteQ9w7EEQa0IxbjOC5aFAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ebd32596a5dac82a58b17abb280e6e46feeebdf679bdedc5bcdd99a7bcd1f05","last_reissued_at":"2026-07-05T01:49:21.863174Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:49:21.863174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.02495","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":"2026-07-05T01:49:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YLqWDzar30CUfmPfeq32Zi4jMq6DefZxc4bOMCoaH7oHDbIoU+WNXud3s6d90c4S6th5E6dqEtsIpsW/uDc4Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T05:01:08.995088Z"},"content_sha256":"8ac757beb3950f312111af449a1341fa71dd0554862971bd6d6ce2b3bd7d9200","schema_version":"1.0","event_id":"sha256:8ac757beb3950f312111af449a1341fa71dd0554862971bd6d6ce2b3bd7d9200"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:D26TEWLKLWWIFJMLC6V3FAHG4R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Orbital Foregrounds for Ultra-Short Duration Transients","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"Alan Vasquez Soto, Amy Glazier, Hank Corbett, Jeffrey K. Ratzloff, Nathan Galliher, Nicholas M. Law, Octavi Fors, Ramses Gonzalez, Robert Quimby, Ward S. Howard","submitted_at":"2020-11-04T19:00:04Z","abstract_excerpt":"Reflections from objects in Earth orbit can produce sub-second, star-like optical flashes similar to astrophysical transients. Reflections have historically caused false alarms for transient surveys, but the population has not been systematically studied. We report event rates for these orbital flashes using the Evryscope Fast Transient Engine, a low-latency transient detection pipeline for the Evryscopes. We select single-epoch detections likely caused by Earth satellites and model the event rate as a function of both magnitude and sky position. We measure a rate of $1800^{+600}_{-280}$ sky$^"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.02495","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/2011.02495/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":"2026-07-05T01:49:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AIaRk6KeW+Dums/GQbYJSZToZoMTkCOb42fZnOa4akDU3fqHPHcJlxYz4/2kh0QH8xjmcgVIc4I9LgAn/+EMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T05:01:08.995630Z"},"content_sha256":"48c3fd5f9a8c01a5f55b0482ebfbeb3b0fb0b6632d3ef5d52fa51dd9464e9e2f","schema_version":"1.0","event_id":"sha256:48c3fd5f9a8c01a5f55b0482ebfbeb3b0fb0b6632d3ef5d52fa51dd9464e9e2f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D26TEWLKLWWIFJMLC6V3FAHG4R/bundle.json","state_url":"https://pith.science/pith/D26TEWLKLWWIFJMLC6V3FAHG4R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D26TEWLKLWWIFJMLC6V3FAHG4R/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":"2026-08-07T05:01:08Z","links":{"resolver":"https://pith.science/pith/D26TEWLKLWWIFJMLC6V3FAHG4R","bundle":"https://pith.science/pith/D26TEWLKLWWIFJMLC6V3FAHG4R/bundle.json","state":"https://pith.science/pith/D26TEWLKLWWIFJMLC6V3FAHG4R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D26TEWLKLWWIFJMLC6V3FAHG4R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:D26TEWLKLWWIFJMLC6V3FAHG4R","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":"b09e0bc933ee50861303e32279ae4b0c02ed654d9d4fee949302965cce0b129d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-04T19:00:04Z","title_canon_sha256":"9baabfe75c1f94f24129caed24005a41aa5ef2a8126fdf45b4ca789925f663c9"},"schema_version":"1.0","source":{"id":"2011.02495","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.02495","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"arxiv_version","alias_value":"2011.02495v1","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.02495","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"pith_short_12","alias_value":"D26TEWLKLWWI","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"pith_short_16","alias_value":"D26TEWLKLWWIFJML","created_at":"2026-07-05T01:49:21Z"},{"alias_kind":"pith_short_8","alias_value":"D26TEWLK","created_at":"2026-07-05T01:49:21Z"}],"graph_snapshots":[{"event_id":"sha256:48c3fd5f9a8c01a5f55b0482ebfbeb3b0fb0b6632d3ef5d52fa51dd9464e9e2f","target":"graph","created_at":"2026-07-05T01:49:21Z","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/2011.02495/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Reflections from objects in Earth orbit can produce sub-second, star-like optical flashes similar to astrophysical transients. Reflections have historically caused false alarms for transient surveys, but the population has not been systematically studied. We report event rates for these orbital flashes using the Evryscope Fast Transient Engine, a low-latency transient detection pipeline for the Evryscopes. We select single-epoch detections likely caused by Earth satellites and model the event rate as a function of both magnitude and sky position. We measure a rate of $1800^{+600}_{-280}$ sky$^","authors_text":"Alan Vasquez Soto, Amy Glazier, Hank Corbett, Jeffrey K. Ratzloff, Nathan Galliher, Nicholas M. Law, Octavi Fors, Ramses Gonzalez, Robert Quimby, Ward S. Howard","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-04T19:00:04Z","title":"Orbital Foregrounds for Ultra-Short Duration Transients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.02495","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":"sha256:8ac757beb3950f312111af449a1341fa71dd0554862971bd6d6ce2b3bd7d9200","target":"record","created_at":"2026-07-05T01:49:21Z","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":"b09e0bc933ee50861303e32279ae4b0c02ed654d9d4fee949302965cce0b129d","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-11-04T19:00:04Z","title_canon_sha256":"9baabfe75c1f94f24129caed24005a41aa5ef2a8126fdf45b4ca789925f663c9"},"schema_version":"1.0","source":{"id":"2011.02495","kind":"arxiv","version":1}},"canonical_sha256":"1ebd32596a5dac82a58b17abb280e6e46feeebdf679bdedc5bcdd99a7bcd1f05","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ebd32596a5dac82a58b17abb280e6e46feeebdf679bdedc5bcdd99a7bcd1f05","first_computed_at":"2026-07-05T01:49:21.863174Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:49:21.863174Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"upyljgk2rTSbYDQvw8gtEKfng4SaA7bCi3VNI2KxI4fHvGILtTFMaUb+ghjvGzsxteQ9w7EEQa0IxbjOC5aFAw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:49:21.863643Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.02495","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ac757beb3950f312111af449a1341fa71dd0554862971bd6d6ce2b3bd7d9200","sha256:48c3fd5f9a8c01a5f55b0482ebfbeb3b0fb0b6632d3ef5d52fa51dd9464e9e2f"],"state_sha256":"bcd38b08b9085734a5482ae53df6e3732a03f5d17dd050e0c85992ef4365356a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kICe/KjvEyl7BidCq6RvwIo/dbXLbSLxnqNH/6aSk3zuo3KVEpAIZIWG3SbsoMDRy1SiiMnDN0D5+TgEcGp/Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T05:01:08.999593Z","bundle_sha256":"66f81a22f94ca39b348ddc2c79060b61fca549be74b0aaebc3d2dbe86770e0e6"}}