{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:YQFWL5FILYF6KQ2PZ22BOX736H","short_pith_number":"pith:YQFWL5FI","canonical_record":{"source":{"id":"1112.0318","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-12-01T21:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"3f406bd346cba5ebed3e8b6c62d8b2a7e52d27a5e842bd86c77fdef373976fb2","abstract_canon_sha256":"b9bb83eacc79ce8529096b7f11115f410dc4ec1781c63c7cf91e37504edb27aa"},"schema_version":"1.0"},"canonical_sha256":"c40b65f4a85e0be5434fceb4175ffbf1cbbbf77c150e30daf39a8e31902592e3","source":{"kind":"arxiv","id":"1112.0318","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.0318","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1112.0318v1","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.0318","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"YQFWL5FILYF6","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YQFWL5FILYF6KQ2P","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YQFWL5FI","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:YQFWL5FILYF6KQ2PZ22BOX736H","target":"record","payload":{"canonical_record":{"source":{"id":"1112.0318","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-12-01T21:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"3f406bd346cba5ebed3e8b6c62d8b2a7e52d27a5e842bd86c77fdef373976fb2","abstract_canon_sha256":"b9bb83eacc79ce8529096b7f11115f410dc4ec1781c63c7cf91e37504edb27aa"},"schema_version":"1.0"},"canonical_sha256":"c40b65f4a85e0be5434fceb4175ffbf1cbbbf77c150e30daf39a8e31902592e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:07:07.462728Z","signature_b64":"CWu7fBkT4S2bUKd/WVPvjj7vfo6cPRiBuZZqnD29XWim0su3y00VF/J/EJO0lAzdtriDwWqvyNp0TkibjNFGCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c40b65f4a85e0be5434fceb4175ffbf1cbbbf77c150e30daf39a8e31902592e3","last_reissued_at":"2026-05-18T04:07:07.462051Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:07:07.462051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.0318","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":"2026-05-18T04:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V0jV4HxTAaSNXM+aUCC7qHJJ6hkqNH3DVdbM/OYWKdAihLUN2fwO8zInoI7yoeMVvfU6x8ouZrNTR8qGOb1TDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:13:24.641487Z"},"content_sha256":"4ef62776ac997461650e704e5d6f46d96b70f436842e8d80f7739f802d9d92b5","schema_version":"1.0","event_id":"sha256:4ef62776ac997461650e704e5d6f46d96b70f436842e8d80f7739f802d9d92b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:YQFWL5FILYF6KQ2PZ22BOX736H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The nature of 19 X-ray sources detected with INTEGRAL","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Bazzano, A.J. Bird, A.J. Dean, A. Malizia, D. Minniti, E. Jimenez-Bailon, E. Palazzi, F. Schiavone, G. Galaz, J.B. Stephen, L. Bassani, L. Morelli, N. Masetti, P. Parisi, P. Ubertini, R. Landi, V. Chavushyan","submitted_at":"2011-12-01T21:00:02Z","abstract_excerpt":"Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detection positional accuracy above 20 keV. Nevertheless, many of the newly-detected sources in the INTEGRAL sky surveys are of unknown nature. The combined use of available information at longer wavelengths (mainly soft X-rays and radio) and of optical spectroscopy on the putative counterparts of these new hard X-ray objects allows pinpointing their exact nature. Continuing our long-standing program running since 2004, here"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.0318","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":"2026-05-18T04:07:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kNlMn+m0u/GDX2o3AzyxM89+gbR6Rw/UgqxOVaZVyB1hK2yb90VhViSW0BlwexIflxmSaUJBQ+ZnATutMXgyCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:13:24.641968Z"},"content_sha256":"b9af916771f86c1b34aac8a8c370d1a98680c67b26c1dede8a760af52f70dba1","schema_version":"1.0","event_id":"sha256:b9af916771f86c1b34aac8a8c370d1a98680c67b26c1dede8a760af52f70dba1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YQFWL5FILYF6KQ2PZ22BOX736H/bundle.json","state_url":"https://pith.science/pith/YQFWL5FILYF6KQ2PZ22BOX736H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YQFWL5FILYF6KQ2PZ22BOX736H/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":"2026-05-27T14:13:24Z","links":{"resolver":"https://pith.science/pith/YQFWL5FILYF6KQ2PZ22BOX736H","bundle":"https://pith.science/pith/YQFWL5FILYF6KQ2PZ22BOX736H/bundle.json","state":"https://pith.science/pith/YQFWL5FILYF6KQ2PZ22BOX736H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YQFWL5FILYF6KQ2PZ22BOX736H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:YQFWL5FILYF6KQ2PZ22BOX736H","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":"b9bb83eacc79ce8529096b7f11115f410dc4ec1781c63c7cf91e37504edb27aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-12-01T21:00:02Z","title_canon_sha256":"3f406bd346cba5ebed3e8b6c62d8b2a7e52d27a5e842bd86c77fdef373976fb2"},"schema_version":"1.0","source":{"id":"1112.0318","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.0318","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"arxiv_version","alias_value":"1112.0318v1","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.0318","created_at":"2026-05-18T04:07:07Z"},{"alias_kind":"pith_short_12","alias_value":"YQFWL5FILYF6","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"YQFWL5FILYF6KQ2P","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"YQFWL5FI","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:b9af916771f86c1b34aac8a8c370d1a98680c67b26c1dede8a760af52f70dba1","target":"graph","created_at":"2026-05-18T04:07:07Z","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":"Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detection positional accuracy above 20 keV. Nevertheless, many of the newly-detected sources in the INTEGRAL sky surveys are of unknown nature. The combined use of available information at longer wavelengths (mainly soft X-rays and radio) and of optical spectroscopy on the putative counterparts of these new hard X-ray objects allows pinpointing their exact nature. Continuing our long-standing program running since 2004, here","authors_text":"A. Bazzano, A.J. Bird, A.J. Dean, A. Malizia, D. Minniti, E. Jimenez-Bailon, E. Palazzi, F. Schiavone, G. Galaz, J.B. Stephen, L. Bassani, L. Morelli, N. Masetti, P. Parisi, P. Ubertini, R. Landi, V. Chavushyan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-12-01T21:00:02Z","title":"The nature of 19 X-ray sources detected with INTEGRAL"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.0318","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":"sha256:4ef62776ac997461650e704e5d6f46d96b70f436842e8d80f7739f802d9d92b5","target":"record","created_at":"2026-05-18T04:07:07Z","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":"b9bb83eacc79ce8529096b7f11115f410dc4ec1781c63c7cf91e37504edb27aa","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-12-01T21:00:02Z","title_canon_sha256":"3f406bd346cba5ebed3e8b6c62d8b2a7e52d27a5e842bd86c77fdef373976fb2"},"schema_version":"1.0","source":{"id":"1112.0318","kind":"arxiv","version":1}},"canonical_sha256":"c40b65f4a85e0be5434fceb4175ffbf1cbbbf77c150e30daf39a8e31902592e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c40b65f4a85e0be5434fceb4175ffbf1cbbbf77c150e30daf39a8e31902592e3","first_computed_at":"2026-05-18T04:07:07.462051Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:07:07.462051Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CWu7fBkT4S2bUKd/WVPvjj7vfo6cPRiBuZZqnD29XWim0su3y00VF/J/EJO0lAzdtriDwWqvyNp0TkibjNFGCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:07:07.462728Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.0318","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4ef62776ac997461650e704e5d6f46d96b70f436842e8d80f7739f802d9d92b5","sha256:b9af916771f86c1b34aac8a8c370d1a98680c67b26c1dede8a760af52f70dba1"],"state_sha256":"d12c453b73cb9adab4017c6aa65d8e84ad0f32b59a81c7afe8862ffd1bcbe49a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/HVyxW+oMWQbIilv8ZySDg/obxwLP/on67dZOGlErHiyQpD47ulZy8X+iEJLPTH3BMJ0FhQgRizpPmbXSNTlDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:13:24.644721Z","bundle_sha256":"e955e6f1c4a8c28c5288805057f8265b8519d5ded84b32e09e5e52f973cccfb6"}}