{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:BEPF3UY3VCIDGJPKGUC3PRA2HX","short_pith_number":"pith:BEPF3UY3","canonical_record":{"source":{"id":"2105.14031","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-28T18:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"8a0a19c181a79608736d1a97ae8994696f7b770049929f5dafac29909da288f6","abstract_canon_sha256":"1d03232d2e20532f343d05b9d2d96ea28a05774179e6dd8fe1f10489e8f739a9"},"schema_version":"1.0"},"canonical_sha256":"091e5dd31ba8903325ea3505b7c41a3dcc650ec8bdd9ad0ef62623acf8d3a380","source":{"kind":"arxiv","id":"2105.14031","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.14031","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"arxiv_version","alias_value":"2105.14031v1","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.14031","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"pith_short_12","alias_value":"BEPF3UY3VCID","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"pith_short_16","alias_value":"BEPF3UY3VCIDGJPK","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"pith_short_8","alias_value":"BEPF3UY3","created_at":"2026-07-05T03:08:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:BEPF3UY3VCIDGJPKGUC3PRA2HX","target":"record","payload":{"canonical_record":{"source":{"id":"2105.14031","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-28T18:00:18Z","cross_cats_sorted":[],"title_canon_sha256":"8a0a19c181a79608736d1a97ae8994696f7b770049929f5dafac29909da288f6","abstract_canon_sha256":"1d03232d2e20532f343d05b9d2d96ea28a05774179e6dd8fe1f10489e8f739a9"},"schema_version":"1.0"},"canonical_sha256":"091e5dd31ba8903325ea3505b7c41a3dcc650ec8bdd9ad0ef62623acf8d3a380","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:08:31.338812Z","signature_b64":"c90SAXgWlI1bphVuVznN8LJqdYJjPp0qteyXbS9PR1s9e3lVkTPJZtjTBVh96K89fL3HyJVxyYd5B05fKC7gAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"091e5dd31ba8903325ea3505b7c41a3dcc650ec8bdd9ad0ef62623acf8d3a380","last_reissued_at":"2026-07-05T03:08:31.338405Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:08:31.338405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.14031","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":"2026-07-05T03:08:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eMU2BdBZLoz+nxqsLkFksPwFDDGOPjPvLoZ/psZVpJBhLqOh353b2jwgZRG/gIhPo0UGk9afuhfNBFixTEQ2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T21:51:00.301626Z"},"content_sha256":"c05651d781333dd32c838fb0c17c0341543d6112f84dd101a7c5dd3758fe285b","schema_version":"1.0","event_id":"sha256:c05651d781333dd32c838fb0c17c0341543d6112f84dd101a7c5dd3758fe285b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:BEPF3UY3VCIDGJPKGUC3PRA2HX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Where Do Obscured AGN Fit in A Galaxy's Timeline?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Allison Kirkpatrick, Cassandra Hatcher, Christopher M. Carroll, Dale Kocesvski, Erini Lambrides, Francesca Civano, Francesca Fornasini, Mauro Giavalisco, Ryan Hickox, Zhiyuan Ji","submitted_at":"2021-05-28T18:00:18Z","abstract_excerpt":"Many X-ray bright active galactic nuclei (AGN) are predicted to follow an extended stage of obscured black hole growth. In support of this picture we examine the X-ray undetected AGNs in the COSMOS field and compare their host galaxies with X-ray bright AGNs. We examine galaxies with M_\\ast>10^{9.5}M_\\odot for the presence of AGNs at redshifts $z=0.5-3$. We select AGNs in the infrared using \\textit{Spitzer} and \\textit{Herschel} detections and use color selection techniques to select AGNs within strongly star forming hosts. We stack \\textit{Chandra} X-ray data of galaxies with an IR detection "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.14031","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/2105.14031/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":"2026-07-05T03:08:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n7JiqE+Yqv2yExgnlPW6M1R0Xj25wEj6c2/SApVFKQMUpdN3aSyW6JLjknYe3C1CzezkmIZ+0ucGeOYYDRg9Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T21:51:00.302003Z"},"content_sha256":"3aaa55cd9cdc2ac0a0a0dc6a0fc33e79815b00b7d5f22fc25d06ccd1d4b199aa","schema_version":"1.0","event_id":"sha256:3aaa55cd9cdc2ac0a0a0dc6a0fc33e79815b00b7d5f22fc25d06ccd1d4b199aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX/bundle.json","state_url":"https://pith.science/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX/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":"2026-07-15T21:51:00Z","links":{"resolver":"https://pith.science/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX","bundle":"https://pith.science/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX/bundle.json","state":"https://pith.science/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BEPF3UY3VCIDGJPKGUC3PRA2HX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:BEPF3UY3VCIDGJPKGUC3PRA2HX","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":"1d03232d2e20532f343d05b9d2d96ea28a05774179e6dd8fe1f10489e8f739a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-28T18:00:18Z","title_canon_sha256":"8a0a19c181a79608736d1a97ae8994696f7b770049929f5dafac29909da288f6"},"schema_version":"1.0","source":{"id":"2105.14031","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.14031","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"arxiv_version","alias_value":"2105.14031v1","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.14031","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"pith_short_12","alias_value":"BEPF3UY3VCID","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"pith_short_16","alias_value":"BEPF3UY3VCIDGJPK","created_at":"2026-07-05T03:08:31Z"},{"alias_kind":"pith_short_8","alias_value":"BEPF3UY3","created_at":"2026-07-05T03:08:31Z"}],"graph_snapshots":[{"event_id":"sha256:3aaa55cd9cdc2ac0a0a0dc6a0fc33e79815b00b7d5f22fc25d06ccd1d4b199aa","target":"graph","created_at":"2026-07-05T03:08:31Z","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/2105.14031/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Many X-ray bright active galactic nuclei (AGN) are predicted to follow an extended stage of obscured black hole growth. In support of this picture we examine the X-ray undetected AGNs in the COSMOS field and compare their host galaxies with X-ray bright AGNs. We examine galaxies with M_\\ast>10^{9.5}M_\\odot for the presence of AGNs at redshifts $z=0.5-3$. We select AGNs in the infrared using \\textit{Spitzer} and \\textit{Herschel} detections and use color selection techniques to select AGNs within strongly star forming hosts. We stack \\textit{Chandra} X-ray data of galaxies with an IR detection ","authors_text":"Allison Kirkpatrick, Cassandra Hatcher, Christopher M. Carroll, Dale Kocesvski, Erini Lambrides, Francesca Civano, Francesca Fornasini, Mauro Giavalisco, Ryan Hickox, Zhiyuan Ji","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-28T18:00:18Z","title":"Where Do Obscured AGN Fit in A Galaxy's Timeline?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.14031","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:c05651d781333dd32c838fb0c17c0341543d6112f84dd101a7c5dd3758fe285b","target":"record","created_at":"2026-07-05T03:08:31Z","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":"1d03232d2e20532f343d05b9d2d96ea28a05774179e6dd8fe1f10489e8f739a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-05-28T18:00:18Z","title_canon_sha256":"8a0a19c181a79608736d1a97ae8994696f7b770049929f5dafac29909da288f6"},"schema_version":"1.0","source":{"id":"2105.14031","kind":"arxiv","version":1}},"canonical_sha256":"091e5dd31ba8903325ea3505b7c41a3dcc650ec8bdd9ad0ef62623acf8d3a380","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"091e5dd31ba8903325ea3505b7c41a3dcc650ec8bdd9ad0ef62623acf8d3a380","first_computed_at":"2026-07-05T03:08:31.338405Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:08:31.338405Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c90SAXgWlI1bphVuVznN8LJqdYJjPp0qteyXbS9PR1s9e3lVkTPJZtjTBVh96K89fL3HyJVxyYd5B05fKC7gAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:08:31.338812Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.14031","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c05651d781333dd32c838fb0c17c0341543d6112f84dd101a7c5dd3758fe285b","sha256:3aaa55cd9cdc2ac0a0a0dc6a0fc33e79815b00b7d5f22fc25d06ccd1d4b199aa"],"state_sha256":"2c7c70d62adfbcc68095df3d34deaae786e2ae9d58408d96159198f17f96684a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cDWCRM7RbwtcqRxm7/dI7ZRP9r3CezIoIDYt4W+4/XuboX9ODc4mkWbqTOmCeSPqkcqvBHUDD/W+CdK5W9/3AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T21:51:00.304007Z","bundle_sha256":"fce78116653cce73ab8064f3e699ff618b175cb8d5db5bc33137a1a449717d0b"}}