{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:GS7HOQOPYKTVJWEEAZAAC63TIH","short_pith_number":"pith:GS7HOQOP","canonical_record":{"source":{"id":"1901.05019","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-01-15T19:00:26Z","cross_cats_sorted":[],"title_canon_sha256":"6867da224b96b5b499903b30e90592128340d43a2d91e2a4956478f5b36d1815","abstract_canon_sha256":"e41111be823a6e4c8a33acdc10993b67d2025334851bbbbf3ffdb635846f6196"},"schema_version":"1.0"},"canonical_sha256":"34be7741cfc2a754d8840640017b7341dbcdb7733cce1bc874e1f2866eb725b0","source":{"kind":"arxiv","id":"1901.05019","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05019","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05019v2","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05019","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"GS7HOQOPYKTV","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GS7HOQOPYKTVJWEE","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GS7HOQOP","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:GS7HOQOPYKTVJWEEAZAAC63TIH","target":"record","payload":{"canonical_record":{"source":{"id":"1901.05019","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-01-15T19:00:26Z","cross_cats_sorted":[],"title_canon_sha256":"6867da224b96b5b499903b30e90592128340d43a2d91e2a4956478f5b36d1815","abstract_canon_sha256":"e41111be823a6e4c8a33acdc10993b67d2025334851bbbbf3ffdb635846f6196"},"schema_version":"1.0"},"canonical_sha256":"34be7741cfc2a754d8840640017b7341dbcdb7733cce1bc874e1f2866eb725b0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:02.256229Z","signature_b64":"X8D5GjYT023SeK1VDcfbYT0zRIlXfo1tZDDjrIByH+VtC4iGJPIPL795DLT5FzfD5A8+za7eZKEg12E/ljUqAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34be7741cfc2a754d8840640017b7341dbcdb7733cce1bc874e1f2866eb725b0","last_reissued_at":"2026-05-17T23:49:02.255724Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:02.255724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.05019","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":"2026-05-17T23:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E0X11JvYXcMoUk6/VIaYVGlNblZ3dqjhVNau+STw/hJyS17GuHMiLz5Cj8HRTrr07TnYiNzJXCCCf+J7hoJSCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T05:39:51.859853Z"},"content_sha256":"648e4bbcc00ba81dfbf309fde78b988c658ce2467d4f7d70d992a15c4bfaef6f","schema_version":"1.0","event_id":"sha256:648e4bbcc00ba81dfbf309fde78b988c658ce2467d4f7d70d992a15c4bfaef6f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:GS7HOQOPYKTVJWEEAZAAC63TIH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decorrelating the errors of the galaxy correlation function with compact transformation matrices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Daniel J. Eisenstein, Sihan Yuan","submitted_at":"2019-01-15T19:00:26Z","abstract_excerpt":"Covariance matrix estimation is a persistent challenge for cosmology, often requiring a large number of synthetic mock catalogues. The off-diagonal components of the covariance matrix also make it difficult to show representative error bars on the 2-point correlation function (2PCF), since errors computed from the diagonal values of the covariance matrix greatly underestimate the uncertainties. We develop a routine for decorrelating the projected and anisotropic 2PCF with simple and scale-compact transformations on the 2PCF. These transformation matrices are modeled after the Cholesky decompos"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05019","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":""},"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":"2026-05-17T23:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1iVMRoVRMzaJVZTu8NqjBhH1KJzYWBS+Hgo0H49DyPWZ8v2lCVrUYwDeuG729rl25fd62IH3pWUU+w8Qq22vDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-28T05:39:51.860207Z"},"content_sha256":"47423ad23754a06aabf8a007c222ec093260b0e2002065b66230a0e2190e750f","schema_version":"1.0","event_id":"sha256:47423ad23754a06aabf8a007c222ec093260b0e2002065b66230a0e2190e750f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GS7HOQOPYKTVJWEEAZAAC63TIH/bundle.json","state_url":"https://pith.science/pith/GS7HOQOPYKTVJWEEAZAAC63TIH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GS7HOQOPYKTVJWEEAZAAC63TIH/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":"2026-06-28T05:39:51Z","links":{"resolver":"https://pith.science/pith/GS7HOQOPYKTVJWEEAZAAC63TIH","bundle":"https://pith.science/pith/GS7HOQOPYKTVJWEEAZAAC63TIH/bundle.json","state":"https://pith.science/pith/GS7HOQOPYKTVJWEEAZAAC63TIH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GS7HOQOPYKTVJWEEAZAAC63TIH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GS7HOQOPYKTVJWEEAZAAC63TIH","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":"e41111be823a6e4c8a33acdc10993b67d2025334851bbbbf3ffdb635846f6196","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-01-15T19:00:26Z","title_canon_sha256":"6867da224b96b5b499903b30e90592128340d43a2d91e2a4956478f5b36d1815"},"schema_version":"1.0","source":{"id":"1901.05019","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.05019","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1901.05019v2","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.05019","created_at":"2026-05-17T23:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"GS7HOQOPYKTV","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GS7HOQOPYKTVJWEE","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GS7HOQOP","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:47423ad23754a06aabf8a007c222ec093260b0e2002065b66230a0e2190e750f","target":"graph","created_at":"2026-05-17T23:49:02Z","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"},"paper":{"abstract_excerpt":"Covariance matrix estimation is a persistent challenge for cosmology, often requiring a large number of synthetic mock catalogues. The off-diagonal components of the covariance matrix also make it difficult to show representative error bars on the 2-point correlation function (2PCF), since errors computed from the diagonal values of the covariance matrix greatly underestimate the uncertainties. We develop a routine for decorrelating the projected and anisotropic 2PCF with simple and scale-compact transformations on the 2PCF. These transformation matrices are modeled after the Cholesky decompos","authors_text":"Daniel J. Eisenstein, Sihan Yuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-01-15T19:00:26Z","title":"Decorrelating the errors of the galaxy correlation function with compact transformation matrices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.05019","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":"sha256:648e4bbcc00ba81dfbf309fde78b988c658ce2467d4f7d70d992a15c4bfaef6f","target":"record","created_at":"2026-05-17T23:49:02Z","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":"e41111be823a6e4c8a33acdc10993b67d2025334851bbbbf3ffdb635846f6196","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2019-01-15T19:00:26Z","title_canon_sha256":"6867da224b96b5b499903b30e90592128340d43a2d91e2a4956478f5b36d1815"},"schema_version":"1.0","source":{"id":"1901.05019","kind":"arxiv","version":2}},"canonical_sha256":"34be7741cfc2a754d8840640017b7341dbcdb7733cce1bc874e1f2866eb725b0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34be7741cfc2a754d8840640017b7341dbcdb7733cce1bc874e1f2866eb725b0","first_computed_at":"2026-05-17T23:49:02.255724Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:02.255724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X8D5GjYT023SeK1VDcfbYT0zRIlXfo1tZDDjrIByH+VtC4iGJPIPL795DLT5FzfD5A8+za7eZKEg12E/ljUqAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:02.256229Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.05019","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:648e4bbcc00ba81dfbf309fde78b988c658ce2467d4f7d70d992a15c4bfaef6f","sha256:47423ad23754a06aabf8a007c222ec093260b0e2002065b66230a0e2190e750f"],"state_sha256":"2e8f8c6e4de8eeb2d618db8a3564236586d51f44df710aa1dcefc0f9951c6fac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"djib2grTZ+8YBjoAvPGT5YGs/tBjwnP77Uui9ZltAIhC/WQ7zzGmbM8utfA8WHkGqXDGFzpHR3C4+P+IcFW/Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-28T05:39:51.865427Z","bundle_sha256":"2d0c7627ab17b970a52343037dd40214b88df1a637121e5570f3bcfdf6624549"}}