{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:VC6UWOUOK7W4BPX536OZZTZ4DE","short_pith_number":"pith:VC6UWOUO","canonical_record":{"source":{"id":"2001.03621","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-10T19:00:01Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"6f0ee371a36a3dd66f4769c2378e9a767417e4bf1551bd5107eb9d2fec778a53","abstract_canon_sha256":"7f347ae60c783ef4664147bf92962a934dbb1ba282593feee171df70c6612415"},"schema_version":"1.0"},"canonical_sha256":"a8bd4b3a8e57edc0befddf9d9ccf3c1931b3867d777c52d5014b46b991ef17bf","source":{"kind":"arxiv","id":"2001.03621","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.03621","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"arxiv_version","alias_value":"2001.03621v2","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.03621","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"pith_short_12","alias_value":"VC6UWOUOK7W4","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"pith_short_16","alias_value":"VC6UWOUOK7W4BPX5","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"pith_short_8","alias_value":"VC6UWOUO","created_at":"2026-07-05T03:02:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:VC6UWOUOK7W4BPX536OZZTZ4DE","target":"record","payload":{"canonical_record":{"source":{"id":"2001.03621","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-10T19:00:01Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"6f0ee371a36a3dd66f4769c2378e9a767417e4bf1551bd5107eb9d2fec778a53","abstract_canon_sha256":"7f347ae60c783ef4664147bf92962a934dbb1ba282593feee171df70c6612415"},"schema_version":"1.0"},"canonical_sha256":"a8bd4b3a8e57edc0befddf9d9ccf3c1931b3867d777c52d5014b46b991ef17bf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:02:07.156519Z","signature_b64":"6QK8ubxRvO35rMd5UBbiL9bY8nTY/XBBC7sY4gRhm+iLVOIB97xhqgFhgA2u4ubJzCQ28fo2wRI21A83MK3gCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a8bd4b3a8e57edc0befddf9d9ccf3c1931b3867d777c52d5014b46b991ef17bf","last_reissued_at":"2026-07-05T03:02:07.155926Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:02:07.155926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.03621","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":"2026-07-05T03:02:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3rHvDQyrt5c4qJHeqMDRKPGTJwwS+brFGs421HBnnBknXb1qg8/HxBlgjS6Vgxax8MRwuOcaHlOPDpaJaY2DDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T18:18:35.762166Z"},"content_sha256":"4826006cb2ccf9fed2934be60fcd838c102c06a13bdb8504b192ad899f58d037","schema_version":"1.0","event_id":"sha256:4826006cb2ccf9fed2934be60fcd838c102c06a13bdb8504b192ad899f58d037"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:VC6UWOUOK7W4BPX536OZZTZ4DE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evaluation of probabilistic photometric redshift estimation approaches for The Rubin Observatory Legacy Survey of Space and Time (LSST)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"A.B. Lee, A.I. Malz, A.J. Connolly, C.B. Morrison, E. Kovacs, E. Nourbakhsh, E. Nuss, G. Longo, H. Tranin, I.A. Almosallam, J.A. Newman, J.B. Kalmbach, J. Cohen-Tanugi, J. DeRose, J.Y.H. Soo, K.G. Iyer, M. Brescia, M.J. Jarvis, M.L. Graham, P.E. Freeman, R.H. Wechsler, R. Izbicki, R. Zhou, S. Cavuoti, S.J. Schmidt, The LSST Dark Energy Science Collaboration, T. Pospisil","submitted_at":"2020-01-10T19:00:01Z","abstract_excerpt":"Many scientific investigations of photometric galaxy surveys require redshift estimates, whose uncertainty properties are best encapsulated by photometric redshift (photo-z) posterior probability density functions (PDFs). A plethora of photo-z PDF estimation methodologies abound, producing discrepant results with no consensus on a preferred approach. We present the results of a comprehensive experiment comparing twelve photo-z algorithms applied to mock data produced for The Rubin Observatory Legacy Survey of Space and Time (LSST) Dark Energy Science Collaboration (DESC). By supplying perfect "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.03621","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/2001.03621/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":"2026-07-05T03:02:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HfvC8OjpVTQWOKkdOR7FqpTVF4JbYS6AjZh6chfobVqm4Hb+R7sU/MSkqOZSs4v9WB7WBBmlUV5VtqNlZIJeBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T18:18:35.762681Z"},"content_sha256":"820e4e16e6097905b2e3bb861387a2cf546716b71c505fcb2ae4b47862768a8f","schema_version":"1.0","event_id":"sha256:820e4e16e6097905b2e3bb861387a2cf546716b71c505fcb2ae4b47862768a8f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VC6UWOUOK7W4BPX536OZZTZ4DE/bundle.json","state_url":"https://pith.science/pith/VC6UWOUOK7W4BPX536OZZTZ4DE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VC6UWOUOK7W4BPX536OZZTZ4DE/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":"2026-07-31T18:18:35Z","links":{"resolver":"https://pith.science/pith/VC6UWOUOK7W4BPX536OZZTZ4DE","bundle":"https://pith.science/pith/VC6UWOUOK7W4BPX536OZZTZ4DE/bundle.json","state":"https://pith.science/pith/VC6UWOUOK7W4BPX536OZZTZ4DE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VC6UWOUOK7W4BPX536OZZTZ4DE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:VC6UWOUOK7W4BPX536OZZTZ4DE","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":"7f347ae60c783ef4664147bf92962a934dbb1ba282593feee171df70c6612415","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-10T19:00:01Z","title_canon_sha256":"6f0ee371a36a3dd66f4769c2378e9a767417e4bf1551bd5107eb9d2fec778a53"},"schema_version":"1.0","source":{"id":"2001.03621","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.03621","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"arxiv_version","alias_value":"2001.03621v2","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.03621","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"pith_short_12","alias_value":"VC6UWOUOK7W4","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"pith_short_16","alias_value":"VC6UWOUOK7W4BPX5","created_at":"2026-07-05T03:02:07Z"},{"alias_kind":"pith_short_8","alias_value":"VC6UWOUO","created_at":"2026-07-05T03:02:07Z"}],"graph_snapshots":[{"event_id":"sha256:820e4e16e6097905b2e3bb861387a2cf546716b71c505fcb2ae4b47862768a8f","target":"graph","created_at":"2026-07-05T03:02:07Z","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/2001.03621/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many scientific investigations of photometric galaxy surveys require redshift estimates, whose uncertainty properties are best encapsulated by photometric redshift (photo-z) posterior probability density functions (PDFs). A plethora of photo-z PDF estimation methodologies abound, producing discrepant results with no consensus on a preferred approach. We present the results of a comprehensive experiment comparing twelve photo-z algorithms applied to mock data produced for The Rubin Observatory Legacy Survey of Space and Time (LSST) Dark Energy Science Collaboration (DESC). By supplying perfect ","authors_text":"A.B. Lee, A.I. Malz, A.J. Connolly, C.B. Morrison, E. Kovacs, E. Nourbakhsh, E. Nuss, G. Longo, H. Tranin, I.A. Almosallam, J.A. Newman, J.B. Kalmbach, J. Cohen-Tanugi, J. DeRose, J.Y.H. Soo, K.G. Iyer, M. Brescia, M.J. Jarvis, M.L. Graham, P.E. Freeman, R.H. Wechsler, R. Izbicki, R. Zhou, S. Cavuoti, S.J. Schmidt, The LSST Dark Energy Science Collaboration, T. Pospisil","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-10T19:00:01Z","title":"Evaluation of probabilistic photometric redshift estimation approaches for The Rubin Observatory Legacy Survey of Space and Time (LSST)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.03621","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":"sha256:4826006cb2ccf9fed2934be60fcd838c102c06a13bdb8504b192ad899f58d037","target":"record","created_at":"2026-07-05T03:02:07Z","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":"7f347ae60c783ef4664147bf92962a934dbb1ba282593feee171df70c6612415","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-01-10T19:00:01Z","title_canon_sha256":"6f0ee371a36a3dd66f4769c2378e9a767417e4bf1551bd5107eb9d2fec778a53"},"schema_version":"1.0","source":{"id":"2001.03621","kind":"arxiv","version":2}},"canonical_sha256":"a8bd4b3a8e57edc0befddf9d9ccf3c1931b3867d777c52d5014b46b991ef17bf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8bd4b3a8e57edc0befddf9d9ccf3c1931b3867d777c52d5014b46b991ef17bf","first_computed_at":"2026-07-05T03:02:07.155926Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:02:07.155926Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6QK8ubxRvO35rMd5UBbiL9bY8nTY/XBBC7sY4gRhm+iLVOIB97xhqgFhgA2u4ubJzCQ28fo2wRI21A83MK3gCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:02:07.156519Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.03621","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4826006cb2ccf9fed2934be60fcd838c102c06a13bdb8504b192ad899f58d037","sha256:820e4e16e6097905b2e3bb861387a2cf546716b71c505fcb2ae4b47862768a8f"],"state_sha256":"6a2c59c416ed3f8ed87f7ce88c13b942e31c476c32300652ca33c198a3b70329"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DMWH3UO50A2CPFhIKPevnQSBuyCvA4nAhkXFCUi1mWJZVYYNi4wb0INpR3lhHXemlRAlHNfWEHeN/lvhxn6gDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T18:18:35.767939Z","bundle_sha256":"fbdcdecbf212b1b9f77af0d874c03035479029303c5e8f03a87721c0a6b70186"}}