{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:NFEFNMZTIRJJONRSR2VRW67LFF","short_pith_number":"pith:NFEFNMZT","canonical_record":{"source":{"id":"2207.07676","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-07-15T18:00:12Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"ee903f38118a9c34f3e60bc989eebcddd2a43cdd43cd54431da89218b2ce5c2b","abstract_canon_sha256":"a0799f4870c2296e60a12fb380cc380889aca8080fc2e432ae5b65bdadd9f0d1"},"schema_version":"1.0"},"canonical_sha256":"694856b33344529736328eab1b7beb29421867714347163836ead909936d9492","source":{"kind":"arxiv","id":"2207.07676","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07676","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07676v1","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07676","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"NFEFNMZTIRJJ","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"pith_short_16","alias_value":"NFEFNMZTIRJJONRS","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"pith_short_8","alias_value":"NFEFNMZT","created_at":"2026-07-05T05:50:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:NFEFNMZTIRJJONRSR2VRW67LFF","target":"record","payload":{"canonical_record":{"source":{"id":"2207.07676","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-07-15T18:00:12Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"ee903f38118a9c34f3e60bc989eebcddd2a43cdd43cd54431da89218b2ce5c2b","abstract_canon_sha256":"a0799f4870c2296e60a12fb380cc380889aca8080fc2e432ae5b65bdadd9f0d1"},"schema_version":"1.0"},"canonical_sha256":"694856b33344529736328eab1b7beb29421867714347163836ead909936d9492","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:50:43.919058Z","signature_b64":"C6davZ1BowZaGyjgo7TUtK/ZBGInK2domHyxG+FqJYxwrL6pV/28Pvc4XNmoILBpTG3L0fqo7crpumEDBpdyBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"694856b33344529736328eab1b7beb29421867714347163836ead909936d9492","last_reissued_at":"2026-07-05T05:50:43.918707Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:50:43.918707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.07676","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":"2026-07-05T05:50:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pyo+yuY/kXiGvOxitFqfQC0iyNRsYPkKtXBbyaA7moLT0xBTQujOsTxf82d1uuzn9koNTjQhjrjp1+dpETC5BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T07:15:24.190270Z"},"content_sha256":"01a24dc8748b7304272a0434b065a042bfb9d7b125aa6ea1d1fd8b2311c47f6e","schema_version":"1.0","event_id":"sha256:01a24dc8748b7304272a0434b065a042bfb9d7b125aa6ea1d1fd8b2311c47f6e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:NFEFNMZTIRJJONRSR2VRW67LFF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spurious correlations between galaxies and multi-epoch image stacks in the DESI Legacy Surveys","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"Boris Leistedt, Edgar Eggert","submitted_at":"2022-07-15T18:00:12Z","abstract_excerpt":"A non-negligible source of systematic bias in cosmological analyses of galaxy surveys is the on-sky modulation caused by foregrounds and variable image characteristics such as observing conditions. Standard mitigation techniques perform a regression between the observed galaxy density field and sky maps of the potential contaminants. Such maps are ad-hoc, lossy summaries of the heterogeneous sets of co-added exposures that contribute to the survey. We present a methodology to address this limitation, and extract the spurious correlations between the observed distribution of galaxies and arbitr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07676","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/2207.07676/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":"2026-07-05T05:50:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Zv7cBZYdjNLNscAaY+776iw9TtVEMvmIdiwJ0WQqGydTvN9ZoMi7fKtg9TVviEw1TolCyL+Azez7XThL9qKCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T07:15:24.190754Z"},"content_sha256":"ba9a8769cc6458114ab997693dd8d70dfe56549810aa8af3a3e39d1e41c428a1","schema_version":"1.0","event_id":"sha256:ba9a8769cc6458114ab997693dd8d70dfe56549810aa8af3a3e39d1e41c428a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NFEFNMZTIRJJONRSR2VRW67LFF/bundle.json","state_url":"https://pith.science/pith/NFEFNMZTIRJJONRSR2VRW67LFF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NFEFNMZTIRJJONRSR2VRW67LFF/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":"2026-08-06T07:15:24Z","links":{"resolver":"https://pith.science/pith/NFEFNMZTIRJJONRSR2VRW67LFF","bundle":"https://pith.science/pith/NFEFNMZTIRJJONRSR2VRW67LFF/bundle.json","state":"https://pith.science/pith/NFEFNMZTIRJJONRSR2VRW67LFF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NFEFNMZTIRJJONRSR2VRW67LFF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:NFEFNMZTIRJJONRSR2VRW67LFF","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":"a0799f4870c2296e60a12fb380cc380889aca8080fc2e432ae5b65bdadd9f0d1","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-07-15T18:00:12Z","title_canon_sha256":"ee903f38118a9c34f3e60bc989eebcddd2a43cdd43cd54431da89218b2ce5c2b"},"schema_version":"1.0","source":{"id":"2207.07676","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.07676","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"arxiv_version","alias_value":"2207.07676v1","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.07676","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"pith_short_12","alias_value":"NFEFNMZTIRJJ","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"pith_short_16","alias_value":"NFEFNMZTIRJJONRS","created_at":"2026-07-05T05:50:43Z"},{"alias_kind":"pith_short_8","alias_value":"NFEFNMZT","created_at":"2026-07-05T05:50:43Z"}],"graph_snapshots":[{"event_id":"sha256:ba9a8769cc6458114ab997693dd8d70dfe56549810aa8af3a3e39d1e41c428a1","target":"graph","created_at":"2026-07-05T05:50:43Z","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/2207.07676/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A non-negligible source of systematic bias in cosmological analyses of galaxy surveys is the on-sky modulation caused by foregrounds and variable image characteristics such as observing conditions. Standard mitigation techniques perform a regression between the observed galaxy density field and sky maps of the potential contaminants. Such maps are ad-hoc, lossy summaries of the heterogeneous sets of co-added exposures that contribute to the survey. We present a methodology to address this limitation, and extract the spurious correlations between the observed distribution of galaxies and arbitr","authors_text":"Boris Leistedt, Edgar Eggert","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-07-15T18:00:12Z","title":"Spurious correlations between galaxies and multi-epoch image stacks in the DESI Legacy Surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.07676","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":"sha256:01a24dc8748b7304272a0434b065a042bfb9d7b125aa6ea1d1fd8b2311c47f6e","target":"record","created_at":"2026-07-05T05:50:43Z","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":"a0799f4870c2296e60a12fb380cc380889aca8080fc2e432ae5b65bdadd9f0d1","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2022-07-15T18:00:12Z","title_canon_sha256":"ee903f38118a9c34f3e60bc989eebcddd2a43cdd43cd54431da89218b2ce5c2b"},"schema_version":"1.0","source":{"id":"2207.07676","kind":"arxiv","version":1}},"canonical_sha256":"694856b33344529736328eab1b7beb29421867714347163836ead909936d9492","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"694856b33344529736328eab1b7beb29421867714347163836ead909936d9492","first_computed_at":"2026-07-05T05:50:43.918707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:50:43.918707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C6davZ1BowZaGyjgo7TUtK/ZBGInK2domHyxG+FqJYxwrL6pV/28Pvc4XNmoILBpTG3L0fqo7crpumEDBpdyBw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:50:43.919058Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.07676","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:01a24dc8748b7304272a0434b065a042bfb9d7b125aa6ea1d1fd8b2311c47f6e","sha256:ba9a8769cc6458114ab997693dd8d70dfe56549810aa8af3a3e39d1e41c428a1"],"state_sha256":"f4035a830947479ad8ed98958704c513818634d8989f90e28d6608691853c427"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+Cj9Jo9UwtHy0B8B3s2mj9BrdRpHLNf/EijKTg6ERw2L9pIvBnKby7mG9yx6yz/REBn7CK275wCDklFzoIPVDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T07:15:24.194109Z","bundle_sha256":"09c7e9102656c59a54513c13c970a3ca9e7bf99ccbeb4dcc792c944f7f93f43d"}}