{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:D6IID2NWJIRBUXRE7FG3KUQR2T","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":"cb85568d3ab685a2effe6372e66ff325c0350820f97e1fc3a009d8f15fbc1df4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-10T13:41:54Z","title_canon_sha256":"b3ab2909f47d5ff61abd0960393cc58eb9ac4d27c199e9eb3bd0534128443e56"},"schema_version":"1.0","source":{"id":"2606.12076","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.12076","created_at":"2026-06-11T01:10:46Z"},{"alias_kind":"arxiv_version","alias_value":"2606.12076v1","created_at":"2026-06-11T01:10:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.12076","created_at":"2026-06-11T01:10:46Z"},{"alias_kind":"pith_short_12","alias_value":"D6IID2NWJIRB","created_at":"2026-06-11T01:10:46Z"},{"alias_kind":"pith_short_16","alias_value":"D6IID2NWJIRBUXRE","created_at":"2026-06-11T01:10:46Z"},{"alias_kind":"pith_short_8","alias_value":"D6IID2NW","created_at":"2026-06-11T01:10:46Z"}],"graph_snapshots":[{"event_id":"sha256:612ae242b8086bfd69f63789e72a9213b90f7132822ae8384d781b2d3efc4f14","target":"graph","created_at":"2026-06-11T01:10:46Z","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/2606.12076/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The population of Compton-thick (CTK) AGN represents a critical yet elusive phase in the growth of supermassive black holes. Constraining their abundance and evolution at high z is essential for understanding both SMBH growth and the origin of the cosmic X-ray background. We investigate the X-ray luminosity function (XLF) of CTK AGN at z > 3 using one of the largest available samples of X-ray-selected AGN at high z, containing 811 sources from XMM-Newton XXL-N and Chandra CCLS and CDF-S/N surveys. We first selected a subsample of ten high-probability CTK candidates, identified through x-ray sp","authors_text":"Angel Ruiz, Ektoras Pouliasis, Ioannis Georgantopoulos","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-10T13:41:54Z","title":"X-ray luminosity function of Compton-thick AGN in the early Universe (z > 3). Robustness and biases of the CTK population"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.12076","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:f405a1ae849fc89227a59c9cc769ecde8f94955ddf47ce766e0bda2811826efa","target":"record","created_at":"2026-06-11T01:10:46Z","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":"cb85568d3ab685a2effe6372e66ff325c0350820f97e1fc3a009d8f15fbc1df4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2026-06-10T13:41:54Z","title_canon_sha256":"b3ab2909f47d5ff61abd0960393cc58eb9ac4d27c199e9eb3bd0534128443e56"},"schema_version":"1.0","source":{"id":"2606.12076","kind":"arxiv","version":1}},"canonical_sha256":"1f9081e9b64a221a5e24f94db55211d4f25ef9037228c886f2bd6a46675458c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f9081e9b64a221a5e24f94db55211d4f25ef9037228c886f2bd6a46675458c0","first_computed_at":"2026-06-11T01:10:46.329080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-11T01:10:46.329080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5oXbVf6Z/a/mvp8WdZN36g1CXmBWhWBW0mk2m+1djD5wOsukjMOzhJefOuOOZJS2BfzvFSF1UEjClB1Cce5YDA==","signature_status":"signed_v1","signed_at":"2026-06-11T01:10:46.329814Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.12076","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f405a1ae849fc89227a59c9cc769ecde8f94955ddf47ce766e0bda2811826efa","sha256:612ae242b8086bfd69f63789e72a9213b90f7132822ae8384d781b2d3efc4f14"],"state_sha256":"91ce40967b5d02f40955159efb22e83b746081ec9b948069f686dd66d0f92768"}