{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4UNS3ZABO5PINEONMYHLUPU4UM","short_pith_number":"pith:4UNS3ZAB","canonical_record":{"source":{"id":"1303.3267","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-03-13T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"ca4452c6d0158364d159548d0c43b9ca384c85f7b4b0a0ed9021e7ca190293fe","abstract_canon_sha256":"e1de0efaaa405b92db08bb53e460855ac1c12dab6aa06a1c66f43f2a832a5061"},"schema_version":"1.0"},"canonical_sha256":"e51b2de401775e8691cd660eba3e9ca3056d4fb04617694517a6698c4222f874","source":{"kind":"arxiv","id":"1303.3267","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.3267","created_at":"2026-05-18T03:30:55Z"},{"alias_kind":"arxiv_version","alias_value":"1303.3267v1","created_at":"2026-05-18T03:30:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.3267","created_at":"2026-05-18T03:30:55Z"},{"alias_kind":"pith_short_12","alias_value":"4UNS3ZABO5PI","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4UNS3ZABO5PINEON","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4UNS3ZAB","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4UNS3ZABO5PINEONMYHLUPU4UM","target":"record","payload":{"canonical_record":{"source":{"id":"1303.3267","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-03-13T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"ca4452c6d0158364d159548d0c43b9ca384c85f7b4b0a0ed9021e7ca190293fe","abstract_canon_sha256":"e1de0efaaa405b92db08bb53e460855ac1c12dab6aa06a1c66f43f2a832a5061"},"schema_version":"1.0"},"canonical_sha256":"e51b2de401775e8691cd660eba3e9ca3056d4fb04617694517a6698c4222f874","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:30:55.946633Z","signature_b64":"Jbr98RlX7ehysvV9diXCuxhOg89TFiUCkA87o8P7+jHX+aUTDN/WThOgfcaPqJ6RMtl4SgNVsxFlM2Nqe806Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e51b2de401775e8691cd660eba3e9ca3056d4fb04617694517a6698c4222f874","last_reissued_at":"2026-05-18T03:30:55.945933Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:30:55.945933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.3267","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":"2026-05-18T03:30:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CkGwY6wpHh+8pMDgpz9dvOkrusKU0LlOA269quI+MsFwtEXV2uI3VaM7Z3CCm9zzfnKJv4iopnCP+/I52X/cDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:42:01.150930Z"},"content_sha256":"c3994fe01e9a95b1a0c386f284755e4ec3fd4fc94859184ab8bce1e9cf9d1c74","schema_version":"1.0","event_id":"sha256:c3994fe01e9a95b1a0c386f284755e4ec3fd4fc94859184ab8bce1e9cf9d1c74"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4UNS3ZABO5PINEONMYHLUPU4UM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unveiling the nature of the unidentified gamma-ray sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Paggi, F. Massaro, G. Tosti, Howard A. Smith, M. Giroletti, N. Masetti, R. d'Abrusco","submitted_at":"2013-03-13T20:00:00Z","abstract_excerpt":"One of the main scientific objectives of the recent Fermi mission is investigating the origin of the unidentified gamma-ray sources (UGSs). Despite the large improvements of Fermi in the gamma-ray source localization with respect to the past gamma-ray missions, about 1/3 of the gamma-ray objects detected do not have yet an assigned counterpart a low energies. We recently developed a new association method to identify if there is a gamma-ray blazar candidate within the positional uncertainty region of a generic gamma-ray source. This method is entirely based on the discovery that blazars, the l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.3267","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":"2026-05-18T03:30:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ss6NaKPjzmcKIPBBZaTHBa3MNnyH3XyXYAY/Mg06hCxl6tLcbJ0o2HkIIoZ6DQRYUh1+dAnP/kgBfQaIL+ONBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T08:42:01.151271Z"},"content_sha256":"8c0f0017ddb2bfc1d48f22fe6479c153c71c8435c9d152b54d552ef0b5e15d7e","schema_version":"1.0","event_id":"sha256:8c0f0017ddb2bfc1d48f22fe6479c153c71c8435c9d152b54d552ef0b5e15d7e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4UNS3ZABO5PINEONMYHLUPU4UM/bundle.json","state_url":"https://pith.science/pith/4UNS3ZABO5PINEONMYHLUPU4UM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4UNS3ZABO5PINEONMYHLUPU4UM/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":"2026-06-01T08:42:01Z","links":{"resolver":"https://pith.science/pith/4UNS3ZABO5PINEONMYHLUPU4UM","bundle":"https://pith.science/pith/4UNS3ZABO5PINEONMYHLUPU4UM/bundle.json","state":"https://pith.science/pith/4UNS3ZABO5PINEONMYHLUPU4UM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4UNS3ZABO5PINEONMYHLUPU4UM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4UNS3ZABO5PINEONMYHLUPU4UM","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":"e1de0efaaa405b92db08bb53e460855ac1c12dab6aa06a1c66f43f2a832a5061","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-03-13T20:00:00Z","title_canon_sha256":"ca4452c6d0158364d159548d0c43b9ca384c85f7b4b0a0ed9021e7ca190293fe"},"schema_version":"1.0","source":{"id":"1303.3267","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.3267","created_at":"2026-05-18T03:30:55Z"},{"alias_kind":"arxiv_version","alias_value":"1303.3267v1","created_at":"2026-05-18T03:30:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.3267","created_at":"2026-05-18T03:30:55Z"},{"alias_kind":"pith_short_12","alias_value":"4UNS3ZABO5PI","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4UNS3ZABO5PINEON","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4UNS3ZAB","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:8c0f0017ddb2bfc1d48f22fe6479c153c71c8435c9d152b54d552ef0b5e15d7e","target":"graph","created_at":"2026-05-18T03:30:55Z","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":"One of the main scientific objectives of the recent Fermi mission is investigating the origin of the unidentified gamma-ray sources (UGSs). Despite the large improvements of Fermi in the gamma-ray source localization with respect to the past gamma-ray missions, about 1/3 of the gamma-ray objects detected do not have yet an assigned counterpart a low energies. We recently developed a new association method to identify if there is a gamma-ray blazar candidate within the positional uncertainty region of a generic gamma-ray source. This method is entirely based on the discovery that blazars, the l","authors_text":"A. Paggi, F. Massaro, G. Tosti, Howard A. Smith, M. Giroletti, N. Masetti, R. d'Abrusco","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-03-13T20:00:00Z","title":"Unveiling the nature of the unidentified gamma-ray sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.3267","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:c3994fe01e9a95b1a0c386f284755e4ec3fd4fc94859184ab8bce1e9cf9d1c74","target":"record","created_at":"2026-05-18T03:30:55Z","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":"e1de0efaaa405b92db08bb53e460855ac1c12dab6aa06a1c66f43f2a832a5061","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-03-13T20:00:00Z","title_canon_sha256":"ca4452c6d0158364d159548d0c43b9ca384c85f7b4b0a0ed9021e7ca190293fe"},"schema_version":"1.0","source":{"id":"1303.3267","kind":"arxiv","version":1}},"canonical_sha256":"e51b2de401775e8691cd660eba3e9ca3056d4fb04617694517a6698c4222f874","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e51b2de401775e8691cd660eba3e9ca3056d4fb04617694517a6698c4222f874","first_computed_at":"2026-05-18T03:30:55.945933Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:55.945933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jbr98RlX7ehysvV9diXCuxhOg89TFiUCkA87o8P7+jHX+aUTDN/WThOgfcaPqJ6RMtl4SgNVsxFlM2Nqe806Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:55.946633Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.3267","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c3994fe01e9a95b1a0c386f284755e4ec3fd4fc94859184ab8bce1e9cf9d1c74","sha256:8c0f0017ddb2bfc1d48f22fe6479c153c71c8435c9d152b54d552ef0b5e15d7e"],"state_sha256":"a5219007e9bc1951760d60ee069b673fa373be05cc2efcbd61a133277244ae5e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zhTo7K90sChq59noHlpQ3/IW5fYtyQ77flkf0E40QESJqB/EWBdRDp3D+k5N09k8tEgvO1tEVbwZJd+uLe2cBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T08:42:01.153162Z","bundle_sha256":"141d883fba3d91f90f46f5a475b7ef958213286851006138828dde87cc700f26"}}