{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:BRZKFCGREAT6CMR3YRWFN4ZVT7","short_pith_number":"pith:BRZKFCGR","canonical_record":{"source":{"id":"2002.09468","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-02-21T18:36:01Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"title_canon_sha256":"acdebfa4717a7036e2d157f6536d9df291dd5f9f38eff5b4d8133660d5e88a7a","abstract_canon_sha256":"bf2349583a795c1e93e46ff46fc952e65c139880f4b34c7f6c53a3afcdc5af76"},"schema_version":"1.0"},"canonical_sha256":"0c72a288d12027e1323bc46c56f3359fdb6edc081ffb5b72c4e13eca0ee6cee1","source":{"kind":"arxiv","id":"2002.09468","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.09468","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"arxiv_version","alias_value":"2002.09468v1","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.09468","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"pith_short_12","alias_value":"BRZKFCGREAT6","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"pith_short_16","alias_value":"BRZKFCGREAT6CMR3","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"pith_short_8","alias_value":"BRZKFCGR","created_at":"2026-07-05T00:50:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:BRZKFCGREAT6CMR3YRWFN4ZVT7","target":"record","payload":{"canonical_record":{"source":{"id":"2002.09468","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-02-21T18:36:01Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"title_canon_sha256":"acdebfa4717a7036e2d157f6536d9df291dd5f9f38eff5b4d8133660d5e88a7a","abstract_canon_sha256":"bf2349583a795c1e93e46ff46fc952e65c139880f4b34c7f6c53a3afcdc5af76"},"schema_version":"1.0"},"canonical_sha256":"0c72a288d12027e1323bc46c56f3359fdb6edc081ffb5b72c4e13eca0ee6cee1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:50:15.311352Z","signature_b64":"r7ATXpinbHMFe2lr663KlQoLsLl9hVZ067g66GcjEvSofYLvAONaeriPZI/KP8JBG8pw0ujl7QQmhzifFPjvAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c72a288d12027e1323bc46c56f3359fdb6edc081ffb5b72c4e13eca0ee6cee1","last_reissued_at":"2026-07-05T00:50:15.310843Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:50:15.310843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.09468","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":"2026-07-05T00:50:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D+t+kM2S6h9JmYpckwi5Q6NsDiLRSwbYnM1tMlK3WMhbGabMBkXX5hJiwKm4RzUdYfSXzRFkzym+ooUd+DNMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T23:08:47.825296Z"},"content_sha256":"f25e67ca2e3a812fc1ade6b5d9ff66b8c0eae4296193d6dd884e0acd7f5a36fc","schema_version":"1.0","event_id":"sha256:f25e67ca2e3a812fc1ade6b5d9ff66b8c0eae4296193d6dd884e0acd7f5a36fc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:BRZKFCGREAT6CMR3YRWFN4ZVT7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Solar Contamination in Extreme Precision Radial Velocity Measurements: Deleterious Effects and Prospects for Mitigation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"Andrew Monson, Arpita Roy, Arvind Gupta, Chad F. Bender, Christian Schwab, Cullen H. Blake, Eli Golub, Gudmundur Stefansson, Jason T. Wright, Jayadev Rajagopal, Joe P. Ninan, Kurt P. Jaehnig, Kyle Kaplan, Marsha J. Wolf, Michael W. McElwain, Paul Robertson, Ryan C. Terrien, Sam Halverson, Sarah E. Logsdon, Sharon Xuesong Wang, Shubham Kanodia, Suvrath Mahadevan","submitted_at":"2020-02-21T18:36:01Z","abstract_excerpt":"Solar contamination, due to moonlight and atmospheric scattering of sunlight, can cause systematic errors in stellar radial velocity (RV) measurements that significantly detract from the ~10cm/s sensitivity required for the detection and characterization of terrestrial exoplanets in or near Habitable Zones of Sun-like stars. The addition of low-level spectral contamination at variable effective velocity offsets introduces systematic noise when measuring velocities using classical mask-based or template-based cross-correlation techniques. Here we present simulations estimating the range of RV m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.09468","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/2002.09468/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":"2026-07-05T00:50:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6MBgbJioggthdf2CAQhybwoTJOGZI6d2bf3utFwi78VRVimq6/G4pAhD5xyrSmkZ5vv9aV+mh1wFzJKA3GWnAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T23:08:47.825683Z"},"content_sha256":"6e0a2fef0a8e4d4597e26cc31bbad6ea9e5f33036b2943beb4cbcf059eb3e5b2","schema_version":"1.0","event_id":"sha256:6e0a2fef0a8e4d4597e26cc31bbad6ea9e5f33036b2943beb4cbcf059eb3e5b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7/bundle.json","state_url":"https://pith.science/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7/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":"2026-07-06T23:08:47Z","links":{"resolver":"https://pith.science/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7","bundle":"https://pith.science/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7/bundle.json","state":"https://pith.science/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BRZKFCGREAT6CMR3YRWFN4ZVT7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:BRZKFCGREAT6CMR3YRWFN4ZVT7","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":"bf2349583a795c1e93e46ff46fc952e65c139880f4b34c7f6c53a3afcdc5af76","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-02-21T18:36:01Z","title_canon_sha256":"acdebfa4717a7036e2d157f6536d9df291dd5f9f38eff5b4d8133660d5e88a7a"},"schema_version":"1.0","source":{"id":"2002.09468","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.09468","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"arxiv_version","alias_value":"2002.09468v1","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.09468","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"pith_short_12","alias_value":"BRZKFCGREAT6","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"pith_short_16","alias_value":"BRZKFCGREAT6CMR3","created_at":"2026-07-05T00:50:15Z"},{"alias_kind":"pith_short_8","alias_value":"BRZKFCGR","created_at":"2026-07-05T00:50:15Z"}],"graph_snapshots":[{"event_id":"sha256:6e0a2fef0a8e4d4597e26cc31bbad6ea9e5f33036b2943beb4cbcf059eb3e5b2","target":"graph","created_at":"2026-07-05T00:50:15Z","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/2002.09468/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Solar contamination, due to moonlight and atmospheric scattering of sunlight, can cause systematic errors in stellar radial velocity (RV) measurements that significantly detract from the ~10cm/s sensitivity required for the detection and characterization of terrestrial exoplanets in or near Habitable Zones of Sun-like stars. The addition of low-level spectral contamination at variable effective velocity offsets introduces systematic noise when measuring velocities using classical mask-based or template-based cross-correlation techniques. Here we present simulations estimating the range of RV m","authors_text":"Andrew Monson, Arpita Roy, Arvind Gupta, Chad F. Bender, Christian Schwab, Cullen H. Blake, Eli Golub, Gudmundur Stefansson, Jason T. Wright, Jayadev Rajagopal, Joe P. Ninan, Kurt P. Jaehnig, Kyle Kaplan, Marsha J. Wolf, Michael W. McElwain, Paul Robertson, Ryan C. Terrien, Sam Halverson, Sarah E. Logsdon, Sharon Xuesong Wang, Shubham Kanodia, Suvrath Mahadevan","cross_cats":["astro-ph.EP","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-02-21T18:36:01Z","title":"Solar Contamination in Extreme Precision Radial Velocity Measurements: Deleterious Effects and Prospects for Mitigation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.09468","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:f25e67ca2e3a812fc1ade6b5d9ff66b8c0eae4296193d6dd884e0acd7f5a36fc","target":"record","created_at":"2026-07-05T00:50:15Z","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":"bf2349583a795c1e93e46ff46fc952e65c139880f4b34c7f6c53a3afcdc5af76","cross_cats_sorted":["astro-ph.EP","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2020-02-21T18:36:01Z","title_canon_sha256":"acdebfa4717a7036e2d157f6536d9df291dd5f9f38eff5b4d8133660d5e88a7a"},"schema_version":"1.0","source":{"id":"2002.09468","kind":"arxiv","version":1}},"canonical_sha256":"0c72a288d12027e1323bc46c56f3359fdb6edc081ffb5b72c4e13eca0ee6cee1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c72a288d12027e1323bc46c56f3359fdb6edc081ffb5b72c4e13eca0ee6cee1","first_computed_at":"2026-07-05T00:50:15.310843Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:50:15.310843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r7ATXpinbHMFe2lr663KlQoLsLl9hVZ067g66GcjEvSofYLvAONaeriPZI/KP8JBG8pw0ujl7QQmhzifFPjvAw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:50:15.311352Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.09468","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f25e67ca2e3a812fc1ade6b5d9ff66b8c0eae4296193d6dd884e0acd7f5a36fc","sha256:6e0a2fef0a8e4d4597e26cc31bbad6ea9e5f33036b2943beb4cbcf059eb3e5b2"],"state_sha256":"72c76a26a6275c25c000d8405ed0e3c5fc91f9f907a19f544c90d31676152d67"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MGIDtPCQQr3+hWydmxHrFNkgwrEuTvRxbUw5mT3Viuw6Wg+B/QgheANMflMZn13OyGjKaqPI1SN4k6TS05TABA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T23:08:47.827729Z","bundle_sha256":"803aba1c5e8139529c8c7b3e249997fafc5e6b076d845c4ff47a90420e8cd9b7"}}