{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:6CMXMHEKFWUUHV7PSOP66LQRLP","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":"0ee512bc88f7446a6225e91736b72e29fe2d3dd466b523d5febd26da634e9172","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-10-31T12:05:06Z","title_canon_sha256":"f289d205b16fc3921495d45fecbc85794bb1964222bab13d807de08565fc0332"},"schema_version":"1.0","source":{"id":"astro-ph/0610939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0610939","created_at":"2026-07-04T16:59:36Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0610939v1","created_at":"2026-07-04T16:59:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0610939","created_at":"2026-07-04T16:59:36Z"},{"alias_kind":"pith_short_12","alias_value":"6CMXMHEKFWUU","created_at":"2026-07-04T16:59:36Z"},{"alias_kind":"pith_short_16","alias_value":"6CMXMHEKFWUUHV7P","created_at":"2026-07-04T16:59:36Z"},{"alias_kind":"pith_short_8","alias_value":"6CMXMHEK","created_at":"2026-07-04T16:59:36Z"}],"graph_snapshots":[{"event_id":"sha256:67d6f34fbaf034bfa0c9915fc904fd09dc18af4917a6aa77938113c316b51fac","target":"graph","created_at":"2026-07-04T16:59:36Z","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/astro-ph/0610939/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a detailed and self-consistent modeling of the cosmic X-ray background (XRB) based on the most up-to-date X-ray luminosity functions (XLF) and evolution of Active Galactic Nuclei (AGN). The large body of observational results collected by soft (0.5-2 keV) and hard (2-10 keV) X-ray surveys are used to constrain at best the properties of the Compton-thin AGN population and its contribution to the XRB emission. The number ratio R between moderately obscured (Compton-thin) AGN and unobscured AGN is fixed by the comparison between the soft and hard XLFs, which suggests that R decreases f","authors_text":"Andrea Comastri (INAF-OABo), Guenther Hasinger (MPE), Roberto Gilli (INAF-OABo)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-10-31T12:05:06Z","title":"The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0610939","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":"sha256:3bec1dfee598ceef63c66f219fe8c08518b6ea6dd58a501a8948f300dd132b79","target":"record","created_at":"2026-07-04T16:59:36Z","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":"0ee512bc88f7446a6225e91736b72e29fe2d3dd466b523d5febd26da634e9172","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-10-31T12:05:06Z","title_canon_sha256":"f289d205b16fc3921495d45fecbc85794bb1964222bab13d807de08565fc0332"},"schema_version":"1.0","source":{"id":"astro-ph/0610939","kind":"arxiv","version":1}},"canonical_sha256":"f099761c8a2da943d7ef939fef2e115becb48e431cca1893fb3af887aef38fd1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f099761c8a2da943d7ef939fef2e115becb48e431cca1893fb3af887aef38fd1","first_computed_at":"2026-07-04T16:59:36.017395Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:59:36.017395Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2EUK3tNuDCbWBU8Avw07x6PYHswZNLGGbANNJbtxpimCB/0b9q7NXdoCPej4o4T5K5JwBx5AOxSVN0xalBN3Ag==","signature_status":"signed_v1","signed_at":"2026-07-04T16:59:36.017755Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0610939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3bec1dfee598ceef63c66f219fe8c08518b6ea6dd58a501a8948f300dd132b79","sha256:67d6f34fbaf034bfa0c9915fc904fd09dc18af4917a6aa77938113c316b51fac"],"state_sha256":"94059897d7a5546216aa73b8a4c5e8f91e04d87a6cce07f54fbf5c7406b3c3af"}