{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:7C6UMIBVU3XHXT7TBPL7JGAGZP","short_pith_number":"pith:7C6UMIBV","canonical_record":{"source":{"id":"1608.05429","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-18T21:04:45Z","cross_cats_sorted":[],"title_canon_sha256":"2b4d9bf837a54c73bc0af2539b895e401e68cc5d3a5709111fcfaea1bd4951e4","abstract_canon_sha256":"a3f7d1eb12556861a959bf1d46151c894cebb279358ab9bd8547bfb3444111a6"},"schema_version":"1.0"},"canonical_sha256":"f8bd462035a6ee7bcff30bd7f49806cbf4f3a58bdcd48a3ca7e1989ebc2d90ce","source":{"kind":"arxiv","id":"1608.05429","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05429","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05429v2","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05429","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"pith_short_12","alias_value":"7C6UMIBVU3XH","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7C6UMIBVU3XHXT7T","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7C6UMIBV","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:7C6UMIBVU3XHXT7TBPL7JGAGZP","target":"record","payload":{"canonical_record":{"source":{"id":"1608.05429","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-18T21:04:45Z","cross_cats_sorted":[],"title_canon_sha256":"2b4d9bf837a54c73bc0af2539b895e401e68cc5d3a5709111fcfaea1bd4951e4","abstract_canon_sha256":"a3f7d1eb12556861a959bf1d46151c894cebb279358ab9bd8547bfb3444111a6"},"schema_version":"1.0"},"canonical_sha256":"f8bd462035a6ee7bcff30bd7f49806cbf4f3a58bdcd48a3ca7e1989ebc2d90ce","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:10.999212Z","signature_b64":"XILwL5pL++70TObG6eEnMXwcuy0kuDHiAOMzCMu4Rh5GZPDiebtE0mBIoHX27KpykD0uky7Mb+zh2G74c+kFCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8bd462035a6ee7bcff30bd7f49806cbf4f3a58bdcd48a3ca7e1989ebc2d90ce","last_reissued_at":"2026-05-18T00:57:10.998849Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:10.998849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.05429","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:57:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KEXSUzqPhOJoOwVW+64M0I+lL9OYSuMyZpjMOh1cB/gwO9VfdgSd7CT64uLLAaY5A3OMJpX9bym9bEzjG8BCCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:58:56.673598Z"},"content_sha256":"a20851a1adf797524bf636d28eda0e70f7c8e8fed64cf1dd18b8ed21d5413235","schema_version":"1.0","event_id":"sha256:a20851a1adf797524bf636d28eda0e70f7c8e8fed64cf1dd18b8ed21d5413235"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:7C6UMIBVU3XHXT7TBPL7JGAGZP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Looking for blazars in a sample of unidentified high-energy emitting Fermi sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Bazzano, A. Malizia, E. Jim\\'enez-Bail\\'on, E. J. Marchesini, E. Palazzi, G. A. Rodr\\'iguez-Castillo, I. Andruchow, J. B. Stephen, L. Bassani, N. Masetti, P. Ubertini, R. Landi, S. A. Cellone, V. Chavushyan, V. Pati\\~no-\\'Alvarez","submitted_at":"2016-08-18T21:04:45Z","abstract_excerpt":"Context. Based on their overwhelming dominance among associated Fermi gamma ray catalogue sources, it is expected that a large fraction of the unidentified Fermi objects are blazars. Through crossmatching between the positions of unidentified gamma ray sources from the First Fermi Catalog of gamma ray sources emitting above 10 GeV (1FHL) and the ROSAT and Swift XRT catalogues of X ray objects and between pointed XRT observations, a sample of 36 potential associations was found in previous works with less than 15 arcsec of positional offset. One third of them have recently been classified; the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05429","kind":"arxiv","version":2},"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":"2026-05-18T00:57:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZeAJBc0TfLXV1cdEpv2Y3RLt49ENyCKBzg07eOsvvDH5au4lwmEn6wcP3W/RtVJy0Cz+HJx2YQ7XPdbOD7B6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T17:58:56.674216Z"},"content_sha256":"5dfe32e19b76c6feeb4597de466dd1e995317de373da083f71ff3bf57f0b45ab","schema_version":"1.0","event_id":"sha256:5dfe32e19b76c6feeb4597de466dd1e995317de373da083f71ff3bf57f0b45ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP/bundle.json","state_url":"https://pith.science/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP/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":"2026-05-27T17:58:56Z","links":{"resolver":"https://pith.science/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP","bundle":"https://pith.science/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP/bundle.json","state":"https://pith.science/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7C6UMIBVU3XHXT7TBPL7JGAGZP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7C6UMIBVU3XHXT7TBPL7JGAGZP","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":"a3f7d1eb12556861a959bf1d46151c894cebb279358ab9bd8547bfb3444111a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-18T21:04:45Z","title_canon_sha256":"2b4d9bf837a54c73bc0af2539b895e401e68cc5d3a5709111fcfaea1bd4951e4"},"schema_version":"1.0","source":{"id":"1608.05429","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05429","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05429v2","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05429","created_at":"2026-05-18T00:57:10Z"},{"alias_kind":"pith_short_12","alias_value":"7C6UMIBVU3XH","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7C6UMIBVU3XHXT7T","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7C6UMIBV","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:5dfe32e19b76c6feeb4597de466dd1e995317de373da083f71ff3bf57f0b45ab","target":"graph","created_at":"2026-05-18T00:57:10Z","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":"Context. Based on their overwhelming dominance among associated Fermi gamma ray catalogue sources, it is expected that a large fraction of the unidentified Fermi objects are blazars. Through crossmatching between the positions of unidentified gamma ray sources from the First Fermi Catalog of gamma ray sources emitting above 10 GeV (1FHL) and the ROSAT and Swift XRT catalogues of X ray objects and between pointed XRT observations, a sample of 36 potential associations was found in previous works with less than 15 arcsec of positional offset. One third of them have recently been classified; the ","authors_text":"A. Bazzano, A. Malizia, E. Jim\\'enez-Bail\\'on, E. J. Marchesini, E. Palazzi, G. A. Rodr\\'iguez-Castillo, I. Andruchow, J. B. Stephen, L. Bassani, N. Masetti, P. Ubertini, R. Landi, S. A. Cellone, V. Chavushyan, V. Pati\\~no-\\'Alvarez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-18T21:04:45Z","title":"Looking for blazars in a sample of unidentified high-energy emitting Fermi sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05429","kind":"arxiv","version":2},"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:a20851a1adf797524bf636d28eda0e70f7c8e8fed64cf1dd18b8ed21d5413235","target":"record","created_at":"2026-05-18T00:57:10Z","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":"a3f7d1eb12556861a959bf1d46151c894cebb279358ab9bd8547bfb3444111a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-08-18T21:04:45Z","title_canon_sha256":"2b4d9bf837a54c73bc0af2539b895e401e68cc5d3a5709111fcfaea1bd4951e4"},"schema_version":"1.0","source":{"id":"1608.05429","kind":"arxiv","version":2}},"canonical_sha256":"f8bd462035a6ee7bcff30bd7f49806cbf4f3a58bdcd48a3ca7e1989ebc2d90ce","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8bd462035a6ee7bcff30bd7f49806cbf4f3a58bdcd48a3ca7e1989ebc2d90ce","first_computed_at":"2026-05-18T00:57:10.998849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:10.998849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XILwL5pL++70TObG6eEnMXwcuy0kuDHiAOMzCMu4Rh5GZPDiebtE0mBIoHX27KpykD0uky7Mb+zh2G74c+kFCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:10.999212Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.05429","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a20851a1adf797524bf636d28eda0e70f7c8e8fed64cf1dd18b8ed21d5413235","sha256:5dfe32e19b76c6feeb4597de466dd1e995317de373da083f71ff3bf57f0b45ab"],"state_sha256":"54aab1b94bda8ced26e7d5e3c530fff6d20fe6488c07c0d9c967ff2b4064de82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8deaT8DQHfOuJ1wka4qiAagzLuaWEjw7lRTVQKQibb3CnAlyIDk7S8WZ4vA7YcQGqTCr/sC7rNW96qFaBwIKAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T17:58:56.677860Z","bundle_sha256":"60b58d6e259d9789b52f15ce8f854fcd20f516de3e525b2a30d8f9fa8eb2cf5c"}}