{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:3WCOTIASZJQCKJSY3ZK7AZMPD6","short_pith_number":"pith:3WCOTIAS","canonical_record":{"source":{"id":"1008.1582","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-08-09T20:02:04Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"08ff883b6300cacb99a266617c94a46f8bf8ee2f89facb3e5e6e6461c687edda","abstract_canon_sha256":"6d486fd313369077d2f87d25c9cb8fe2dabc22aa1cbacd666256cea57c5d6904"},"schema_version":"1.0"},"canonical_sha256":"dd84e9a012ca60252658de55f0658f1f8eef3563fe8de38d601c75248b33bc97","source":{"kind":"arxiv","id":"1008.1582","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.1582","created_at":"2026-05-18T02:05:50Z"},{"alias_kind":"arxiv_version","alias_value":"1008.1582v1","created_at":"2026-05-18T02:05:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.1582","created_at":"2026-05-18T02:05:50Z"},{"alias_kind":"pith_short_12","alias_value":"3WCOTIASZJQC","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"3WCOTIASZJQCKJSY","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"3WCOTIAS","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:3WCOTIASZJQCKJSY3ZK7AZMPD6","target":"record","payload":{"canonical_record":{"source":{"id":"1008.1582","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-08-09T20:02:04Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"08ff883b6300cacb99a266617c94a46f8bf8ee2f89facb3e5e6e6461c687edda","abstract_canon_sha256":"6d486fd313369077d2f87d25c9cb8fe2dabc22aa1cbacd666256cea57c5d6904"},"schema_version":"1.0"},"canonical_sha256":"dd84e9a012ca60252658de55f0658f1f8eef3563fe8de38d601c75248b33bc97","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:50.067238Z","signature_b64":"lBkNNoA5JUVrt5Ijj/ytu7FYCVzYU7j5M/6WmQGQFKUZETSmhVan/f5OcLH38qbiCEDciNYqApNaxP6TwoeUBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dd84e9a012ca60252658de55f0658f1f8eef3563fe8de38d601c75248b33bc97","last_reissued_at":"2026-05-18T02:05:50.066543Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:50.066543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.1582","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":"2026-05-18T02:05:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rYyod6IrDKmjaGtmu/4WcSayTnP0QZY4xvJEMa48sAH9UwYkGYhe+nZ2pV0SOyzHgTU6yoY7PghDtPWWHkFEDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T23:26:40.213697Z"},"content_sha256":"b60b74e85243de04198fd3acd29531aef043a049ff23c87eb56af426590ed819","schema_version":"1.0","event_id":"sha256:b60b74e85243de04198fd3acd29531aef043a049ff23c87eb56af426590ed819"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:3WCOTIASZJQCKJSY3ZK7AZMPD6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The OPTX Project IV: How Reliable is [OIII] as a Measure of AGN Activity?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. J. Barger, L. Trouille","submitted_at":"2010-08-09T20:02:04Z","abstract_excerpt":"We compare optical and hard X-ray identifications of AGNs using a uniformly selected (above a flux limit of f_2-8 keV = 3.5e-15 erg/cm2/s) and highly optically spectroscopically complete ( > 80% for f_2-8 keV > 1e-14 erg/cm2/s and > 60% below) 2-8 keV sample observed in three Chandra fields (CLANS, CLASXS, and the CDF-N). We find that empirical emission-line ratio diagnostic diagrams misidentify 20-50% of the X-ray selected AGNs that can be put on these diagrams as star formers, depending on which division is used. We confirm that there is a large (2 orders in magnitude) dispersion in the log "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.1582","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":""},"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":"2026-05-18T02:05:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G5RpeS0mthDNtc/4UTnUQ9xCTXO76wVKL+zxh2eFGH4FlwwAy1hdZamNPMXkG8GcWJR5I6E60WHR8z2XqrClCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T23:26:40.214429Z"},"content_sha256":"0ca81667ec045b4ec22edffa1d0c20046b0e84a103dcce50190decfa4ebc2d1a","schema_version":"1.0","event_id":"sha256:0ca81667ec045b4ec22edffa1d0c20046b0e84a103dcce50190decfa4ebc2d1a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6/bundle.json","state_url":"https://pith.science/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6/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":"2026-06-09T23:26:40Z","links":{"resolver":"https://pith.science/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6","bundle":"https://pith.science/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6/bundle.json","state":"https://pith.science/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3WCOTIASZJQCKJSY3ZK7AZMPD6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:3WCOTIASZJQCKJSY3ZK7AZMPD6","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":"6d486fd313369077d2f87d25c9cb8fe2dabc22aa1cbacd666256cea57c5d6904","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-08-09T20:02:04Z","title_canon_sha256":"08ff883b6300cacb99a266617c94a46f8bf8ee2f89facb3e5e6e6461c687edda"},"schema_version":"1.0","source":{"id":"1008.1582","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.1582","created_at":"2026-05-18T02:05:50Z"},{"alias_kind":"arxiv_version","alias_value":"1008.1582v1","created_at":"2026-05-18T02:05:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.1582","created_at":"2026-05-18T02:05:50Z"},{"alias_kind":"pith_short_12","alias_value":"3WCOTIASZJQC","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"3WCOTIASZJQCKJSY","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"3WCOTIAS","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:0ca81667ec045b4ec22edffa1d0c20046b0e84a103dcce50190decfa4ebc2d1a","target":"graph","created_at":"2026-05-18T02:05:50Z","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":"We compare optical and hard X-ray identifications of AGNs using a uniformly selected (above a flux limit of f_2-8 keV = 3.5e-15 erg/cm2/s) and highly optically spectroscopically complete ( > 80% for f_2-8 keV > 1e-14 erg/cm2/s and > 60% below) 2-8 keV sample observed in three Chandra fields (CLANS, CLASXS, and the CDF-N). We find that empirical emission-line ratio diagnostic diagrams misidentify 20-50% of the X-ray selected AGNs that can be put on these diagrams as star formers, depending on which division is used. We confirm that there is a large (2 orders in magnitude) dispersion in the log ","authors_text":"A. J. Barger, L. Trouille","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-08-09T20:02:04Z","title":"The OPTX Project IV: How Reliable is [OIII] as a Measure of AGN Activity?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.1582","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:b60b74e85243de04198fd3acd29531aef043a049ff23c87eb56af426590ed819","target":"record","created_at":"2026-05-18T02:05:50Z","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":"6d486fd313369077d2f87d25c9cb8fe2dabc22aa1cbacd666256cea57c5d6904","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-08-09T20:02:04Z","title_canon_sha256":"08ff883b6300cacb99a266617c94a46f8bf8ee2f89facb3e5e6e6461c687edda"},"schema_version":"1.0","source":{"id":"1008.1582","kind":"arxiv","version":1}},"canonical_sha256":"dd84e9a012ca60252658de55f0658f1f8eef3563fe8de38d601c75248b33bc97","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dd84e9a012ca60252658de55f0658f1f8eef3563fe8de38d601c75248b33bc97","first_computed_at":"2026-05-18T02:05:50.066543Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:05:50.066543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lBkNNoA5JUVrt5Ijj/ytu7FYCVzYU7j5M/6WmQGQFKUZETSmhVan/f5OcLH38qbiCEDciNYqApNaxP6TwoeUBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:05:50.067238Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.1582","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b60b74e85243de04198fd3acd29531aef043a049ff23c87eb56af426590ed819","sha256:0ca81667ec045b4ec22edffa1d0c20046b0e84a103dcce50190decfa4ebc2d1a"],"state_sha256":"ca2b61e0a72b82f8e61b6a574784c7bf52de780734a8de4115345f4986003153"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"imzo4AGIWSCRPQ0J/skYBd9y4I5ryGqdrAkoHwAJ05U5fJY0V5AxLmk5nZd5cBjchUzpikroN4D/OYNgSqJjDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T23:26:40.218115Z","bundle_sha256":"ac3935f34d052e4b98502a7fac1419b4bbc4647c81e2e71468af8443fd6c8f4a"}}