{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:BJF22GUNKBLVNCS6YDUPUOMRGE","short_pith_number":"pith:BJF22GUN","canonical_record":{"source":{"id":"1610.08997","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-27T20:08:57Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"26311db52cb16705cab3e58f523c8873cf8e9abc44cce2ae3a3e0915cc4eda7f","abstract_canon_sha256":"81690352ac27d10ab39d833b955d7cb255b084101fbfbed6d385d298518b7421"},"schema_version":"1.0"},"canonical_sha256":"0a4bad1a8d5057568a5ec0e8fa399131159d46f9ca1bd1c51eac509ace2ef78d","source":{"kind":"arxiv","id":"1610.08997","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.08997","created_at":"2026-05-18T00:53:58Z"},{"alias_kind":"arxiv_version","alias_value":"1610.08997v1","created_at":"2026-05-18T00:53:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.08997","created_at":"2026-05-18T00:53:58Z"},{"alias_kind":"pith_short_12","alias_value":"BJF22GUNKBLV","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"BJF22GUNKBLVNCS6","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"BJF22GUN","created_at":"2026-05-18T12:30:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:BJF22GUNKBLVNCS6YDUPUOMRGE","target":"record","payload":{"canonical_record":{"source":{"id":"1610.08997","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-27T20:08:57Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"26311db52cb16705cab3e58f523c8873cf8e9abc44cce2ae3a3e0915cc4eda7f","abstract_canon_sha256":"81690352ac27d10ab39d833b955d7cb255b084101fbfbed6d385d298518b7421"},"schema_version":"1.0"},"canonical_sha256":"0a4bad1a8d5057568a5ec0e8fa399131159d46f9ca1bd1c51eac509ace2ef78d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:53:58.029050Z","signature_b64":"r9OCLR/gBtHXMDg/E8xbR59b8fHJ+11xlragDoxFMkCSx8g7f+iv2VjyM+AD5XBWeebknS/JadnRyET00bI/Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0a4bad1a8d5057568a5ec0e8fa399131159d46f9ca1bd1c51eac509ace2ef78d","last_reissued_at":"2026-05-18T00:53:58.028493Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:53:58.028493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.08997","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":"2026-05-18T00:53:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1hk8plwgt1GEfxNHOXdPseOSujzofS7ua9eQ4qHf3n+q9SABFyJo2x0+kQVBk+vCyqQTZBoOgsHzieDeHRE/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:55:10.027937Z"},"content_sha256":"8d3acb0a5f3138b41d95942f3b1726af64ce81710b309efd3f409358684843ce","schema_version":"1.0","event_id":"sha256:8d3acb0a5f3138b41d95942f3b1726af64ce81710b309efd3f409358684843ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:BJF22GUNKBLVNCS6YDUPUOMRGE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"IC 3639 - A new bona fide Compton thick AGN unveiled by NuSTAR","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"A. Annuar, A. Masini, C. J. Hailey, C. Ricci, D. Alexander, D. Farrah, D. R. Ballantyne, D. Stern, F. A. Harrison, F. Bauer, F. E. Christensen, G. Risaliti, M. Brightman, M. Koss, Peter G. Boorman (University of Southampton), P. Gandhi (University of Southampton), S. E. Boggs, S. F. Hoenig, S. M. LaMassa, W. N. Brandt, W. W. Craig, W. W. Zhang","submitted_at":"2016-10-27T20:08:57Z","abstract_excerpt":"We analyse high-quality NuSTAR observations of the local (z = 0.011) Seyfert 2 active galactic nucleus (AGN) IC 3639, in conjunction with archival Suzaku and Chandra data. This provides the first broadband X-ray spectral analysis of the source, spanning nearly two decades in energy (0.5-30 keV). Previous X-ray observations of the source below 10 keV indicated strong reflection/obscuration on the basis of a pronounced iron fluorescence line at 6.4 keV. The hard X-ray energy coverage of NuSTAR, together with self-consistent toroidal reprocessing models, enables direct broadband constraints on th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08997","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":"2026-05-18T00:53:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RCb/A7S4YBBvBOTfsoiuCChjh0bidjzDtPLcFU18RBvTApYZiM13EiDIcMMLWdbK3kMGiDYbFsRwOwyXmQ/qAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:55:10.028426Z"},"content_sha256":"e9a7642bd470096fe0eaa22e52186486afe4943a3ec3c466c1d497c1d53d428f","schema_version":"1.0","event_id":"sha256:e9a7642bd470096fe0eaa22e52186486afe4943a3ec3c466c1d497c1d53d428f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BJF22GUNKBLVNCS6YDUPUOMRGE/bundle.json","state_url":"https://pith.science/pith/BJF22GUNKBLVNCS6YDUPUOMRGE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BJF22GUNKBLVNCS6YDUPUOMRGE/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":"2026-05-30T11:55:10Z","links":{"resolver":"https://pith.science/pith/BJF22GUNKBLVNCS6YDUPUOMRGE","bundle":"https://pith.science/pith/BJF22GUNKBLVNCS6YDUPUOMRGE/bundle.json","state":"https://pith.science/pith/BJF22GUNKBLVNCS6YDUPUOMRGE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BJF22GUNKBLVNCS6YDUPUOMRGE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:BJF22GUNKBLVNCS6YDUPUOMRGE","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":"81690352ac27d10ab39d833b955d7cb255b084101fbfbed6d385d298518b7421","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-27T20:08:57Z","title_canon_sha256":"26311db52cb16705cab3e58f523c8873cf8e9abc44cce2ae3a3e0915cc4eda7f"},"schema_version":"1.0","source":{"id":"1610.08997","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.08997","created_at":"2026-05-18T00:53:58Z"},{"alias_kind":"arxiv_version","alias_value":"1610.08997v1","created_at":"2026-05-18T00:53:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.08997","created_at":"2026-05-18T00:53:58Z"},{"alias_kind":"pith_short_12","alias_value":"BJF22GUNKBLV","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"BJF22GUNKBLVNCS6","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"BJF22GUN","created_at":"2026-05-18T12:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:e9a7642bd470096fe0eaa22e52186486afe4943a3ec3c466c1d497c1d53d428f","target":"graph","created_at":"2026-05-18T00:53:58Z","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 analyse high-quality NuSTAR observations of the local (z = 0.011) Seyfert 2 active galactic nucleus (AGN) IC 3639, in conjunction with archival Suzaku and Chandra data. This provides the first broadband X-ray spectral analysis of the source, spanning nearly two decades in energy (0.5-30 keV). Previous X-ray observations of the source below 10 keV indicated strong reflection/obscuration on the basis of a pronounced iron fluorescence line at 6.4 keV. The hard X-ray energy coverage of NuSTAR, together with self-consistent toroidal reprocessing models, enables direct broadband constraints on th","authors_text":"A. Annuar, A. Masini, C. J. Hailey, C. Ricci, D. Alexander, D. Farrah, D. R. Ballantyne, D. Stern, F. A. Harrison, F. Bauer, F. E. Christensen, G. Risaliti, M. Brightman, M. Koss, Peter G. Boorman (University of Southampton), P. Gandhi (University of Southampton), S. E. Boggs, S. F. Hoenig, S. M. LaMassa, W. N. Brandt, W. W. Craig, W. W. Zhang","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-27T20:08:57Z","title":"IC 3639 - A new bona fide Compton thick AGN unveiled by NuSTAR"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.08997","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":"sha256:8d3acb0a5f3138b41d95942f3b1726af64ce81710b309efd3f409358684843ce","target":"record","created_at":"2026-05-18T00:53:58Z","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":"81690352ac27d10ab39d833b955d7cb255b084101fbfbed6d385d298518b7421","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-10-27T20:08:57Z","title_canon_sha256":"26311db52cb16705cab3e58f523c8873cf8e9abc44cce2ae3a3e0915cc4eda7f"},"schema_version":"1.0","source":{"id":"1610.08997","kind":"arxiv","version":1}},"canonical_sha256":"0a4bad1a8d5057568a5ec0e8fa399131159d46f9ca1bd1c51eac509ace2ef78d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0a4bad1a8d5057568a5ec0e8fa399131159d46f9ca1bd1c51eac509ace2ef78d","first_computed_at":"2026-05-18T00:53:58.028493Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:53:58.028493Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r9OCLR/gBtHXMDg/E8xbR59b8fHJ+11xlragDoxFMkCSx8g7f+iv2VjyM+AD5XBWeebknS/JadnRyET00bI/Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:53:58.029050Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.08997","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d3acb0a5f3138b41d95942f3b1726af64ce81710b309efd3f409358684843ce","sha256:e9a7642bd470096fe0eaa22e52186486afe4943a3ec3c466c1d497c1d53d428f"],"state_sha256":"9d03c2c72dacd96db3dff50d37fcd1ebe24caf53667b87f6822319115b3b7053"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fvO0+DhNXzAISEa+WFZ35azBi9eZMyRDXMrxXzgUDzHa4NjpEhyiIV0dGUIQCQLtuk1mF682jt2JTb0axLZWDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:55:10.030706Z","bundle_sha256":"78483cd5c55692c51c319d05870a522faa398c32e32264a78e0fe5890c95b92d"}}