{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QSJW2P7LEQ7ESTXL34TXUVLG6T","short_pith_number":"pith:QSJW2P7L","canonical_record":{"source":{"id":"2606.05312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-03T18:02:34Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"20d7ca9eb1ddece1e31987ea23cb060192e5778c3045f5d772e5f9d988b1b510","abstract_canon_sha256":"928a4b27ca2ac7ea24a294cfb1670d661ced821afd3496067e4b7c5d82645d06"},"schema_version":"1.0"},"canonical_sha256":"84936d3feb243e494eebdf277a5566f4d50bad38a32e2367326784bcaeee2faa","source":{"kind":"arxiv","id":"2606.05312","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.05312","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"arxiv_version","alias_value":"2606.05312v1","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.05312","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"pith_short_12","alias_value":"QSJW2P7LEQ7E","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"pith_short_16","alias_value":"QSJW2P7LEQ7ESTXL","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"pith_short_8","alias_value":"QSJW2P7L","created_at":"2026-06-05T00:13:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QSJW2P7LEQ7ESTXL34TXUVLG6T","target":"record","payload":{"canonical_record":{"source":{"id":"2606.05312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-03T18:02:34Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"20d7ca9eb1ddece1e31987ea23cb060192e5778c3045f5d772e5f9d988b1b510","abstract_canon_sha256":"928a4b27ca2ac7ea24a294cfb1670d661ced821afd3496067e4b7c5d82645d06"},"schema_version":"1.0"},"canonical_sha256":"84936d3feb243e494eebdf277a5566f4d50bad38a32e2367326784bcaeee2faa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-05T00:13:53.544737Z","signature_b64":"ZPqhsRb9bo5IDrRaAa8hmtIkkTX33CFYxKk3H2lMD6ZmmD+ktihszEOHFsor+2/JJKLqnRrfvhQx3AaEBYtbCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"84936d3feb243e494eebdf277a5566f4d50bad38a32e2367326784bcaeee2faa","last_reissued_at":"2026-06-05T00:13:53.544258Z","signature_status":"signed_v1","first_computed_at":"2026-06-05T00:13:53.544258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.05312","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":"2026-06-05T00:13:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GUorVzeErZ3TFjo1QVqwnSBKPSu7uly/yBKBotev4o+3hqYfbZ2SjyTzBjPRDvAlDIfPCUh4TZ97cf5b7xiNCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T19:04:30.359110Z"},"content_sha256":"9215ba2694e9773bc9fa19d7dd2a960aabf18497e1e13291bdce2091f83ebec2","schema_version":"1.0","event_id":"sha256:9215ba2694e9773bc9fa19d7dd2a960aabf18497e1e13291bdce2091f83ebec2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QSJW2P7LEQ7ESTXL34TXUVLG6T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The WISSHFUL program: the highest redshift UFO discovered in a non-lensed QSO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. Comastri, A. Luminari, A. Marinucci, A. Tortosa, C. Vignali, D. Stern, E. Bertola, E. Kammoun, E. Piconcelli, F. Salvestrini, F. Tombesi, F. Vito, G. Bruni, G. Chartas, G. Lanzuisi, G. Matzeu, G. Vietri, J. Reeves, L. Borrelli, L. Zappacosta, M. Bischetti, M. Brusa, M. Cappi, M. Dadina, M. Fanelli, M. Gaspari, S. Bianchi, S. Marchesi, T. Misawa, V. Braito, X. Zhao","submitted_at":"2026-06-03T18:02:34Z","abstract_excerpt":"We present the first results from the WISSHFUL program, an XMM-Newton heritage program targeting luminous QSOs at Cosmic Noon. We report on recent simultaneous XMM-Newton and NuSTAR observations of the Super-Eddington accreting quasar WISSH13 at z=3.294, which provide the highest quality broadband X-ray spectrum to date for a non-lensed QSO at this redshift. Physical modeling of the continuum reveals a soft photon index ($\\Gamma\\sim2$) and strong reflection ($R\\sim1.4-1.8$), despite the weak narrow Fe emission, and a low high-energy cut-off ($E_{cut}\\sim60-80$ keV, $kTe = 15-20$ keV, depending"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.05312","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/2606.05312/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":"2026-06-05T00:13:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V54ydRU2nSlSFy5UEQs453Vu9PM2CwJJmlXyYF69WpqpAHoDvcwnzyv+7spYcPAEHxDur3tUK4lOl6ZJv3dqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T19:04:30.359520Z"},"content_sha256":"2e02fc285c9c2d1956ab4d1a2878ce8d4a658001d50cf7987f61ee564c1ede7f","schema_version":"1.0","event_id":"sha256:2e02fc285c9c2d1956ab4d1a2878ce8d4a658001d50cf7987f61ee564c1ede7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T/bundle.json","state_url":"https://pith.science/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T/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":"2026-06-06T19:04:30Z","links":{"resolver":"https://pith.science/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T","bundle":"https://pith.science/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T/bundle.json","state":"https://pith.science/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QSJW2P7LEQ7ESTXL34TXUVLG6T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QSJW2P7LEQ7ESTXL34TXUVLG6T","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":"928a4b27ca2ac7ea24a294cfb1670d661ced821afd3496067e4b7c5d82645d06","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-03T18:02:34Z","title_canon_sha256":"20d7ca9eb1ddece1e31987ea23cb060192e5778c3045f5d772e5f9d988b1b510"},"schema_version":"1.0","source":{"id":"2606.05312","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.05312","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"arxiv_version","alias_value":"2606.05312v1","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.05312","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"pith_short_12","alias_value":"QSJW2P7LEQ7E","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"pith_short_16","alias_value":"QSJW2P7LEQ7ESTXL","created_at":"2026-06-05T00:13:53Z"},{"alias_kind":"pith_short_8","alias_value":"QSJW2P7L","created_at":"2026-06-05T00:13:53Z"}],"graph_snapshots":[{"event_id":"sha256:2e02fc285c9c2d1956ab4d1a2878ce8d4a658001d50cf7987f61ee564c1ede7f","target":"graph","created_at":"2026-06-05T00:13:53Z","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/2606.05312/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first results from the WISSHFUL program, an XMM-Newton heritage program targeting luminous QSOs at Cosmic Noon. We report on recent simultaneous XMM-Newton and NuSTAR observations of the Super-Eddington accreting quasar WISSH13 at z=3.294, which provide the highest quality broadband X-ray spectrum to date for a non-lensed QSO at this redshift. Physical modeling of the continuum reveals a soft photon index ($\\Gamma\\sim2$) and strong reflection ($R\\sim1.4-1.8$), despite the weak narrow Fe emission, and a low high-energy cut-off ($E_{cut}\\sim60-80$ keV, $kTe = 15-20$ keV, depending","authors_text":"A. Comastri, A. Luminari, A. Marinucci, A. Tortosa, C. Vignali, D. Stern, E. Bertola, E. Kammoun, E. Piconcelli, F. Salvestrini, F. Tombesi, F. Vito, G. Bruni, G. Chartas, G. Lanzuisi, G. Matzeu, G. Vietri, J. Reeves, L. Borrelli, L. Zappacosta, M. Bischetti, M. Brusa, M. Cappi, M. Dadina, M. Fanelli, M. Gaspari, S. Bianchi, S. Marchesi, T. Misawa, V. Braito, X. Zhao","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-03T18:02:34Z","title":"The WISSHFUL program: the highest redshift UFO discovered in a non-lensed QSO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.05312","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":"sha256:9215ba2694e9773bc9fa19d7dd2a960aabf18497e1e13291bdce2091f83ebec2","target":"record","created_at":"2026-06-05T00:13:53Z","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":"928a4b27ca2ac7ea24a294cfb1670d661ced821afd3496067e4b7c5d82645d06","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-06-03T18:02:34Z","title_canon_sha256":"20d7ca9eb1ddece1e31987ea23cb060192e5778c3045f5d772e5f9d988b1b510"},"schema_version":"1.0","source":{"id":"2606.05312","kind":"arxiv","version":1}},"canonical_sha256":"84936d3feb243e494eebdf277a5566f4d50bad38a32e2367326784bcaeee2faa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"84936d3feb243e494eebdf277a5566f4d50bad38a32e2367326784bcaeee2faa","first_computed_at":"2026-06-05T00:13:53.544258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-05T00:13:53.544258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZPqhsRb9bo5IDrRaAa8hmtIkkTX33CFYxKk3H2lMD6ZmmD+ktihszEOHFsor+2/JJKLqnRrfvhQx3AaEBYtbCw==","signature_status":"signed_v1","signed_at":"2026-06-05T00:13:53.544737Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.05312","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9215ba2694e9773bc9fa19d7dd2a960aabf18497e1e13291bdce2091f83ebec2","sha256:2e02fc285c9c2d1956ab4d1a2878ce8d4a658001d50cf7987f61ee564c1ede7f"],"state_sha256":"701a3840491282cb8fc37393bf6ef7ea9d7ac1c3b1675faf5e663d70f57b5fa8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a/7xhzV56DWXbZaNomCtOEteBbDV3qjfme8KaMHZ9+81VDD98X6CLHKi/WmKwu537fsk+gQnP3EcCmlpPdwtAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T19:04:30.361881Z","bundle_sha256":"0a31c21b45cada04a9e3c8af81e9c7c0708da5f5e8849e0bb74e95dd78ce3b73"}}