{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:HZ2X5XDR56M365HMJM2JYLSLXG","short_pith_number":"pith:HZ2X5XDR","canonical_record":{"source":{"id":"1602.06592","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-02-21T22:40:58Z","cross_cats_sorted":[],"title_canon_sha256":"fbf3bc370e7a9f798a3d445d01158e23440e0628768df2bb78d91f1fff2d896b","abstract_canon_sha256":"554c1d30eae8ca01e8210a723bd55165317fe00457c78cd3baaed19d7798a885"},"schema_version":"1.0"},"canonical_sha256":"3e757edc71ef99bf74ec4b349c2e4bb9b173c1031c110a164cb200b95f8b5617","source":{"kind":"arxiv","id":"1602.06592","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.06592","created_at":"2026-05-18T01:10:50Z"},{"alias_kind":"arxiv_version","alias_value":"1602.06592v1","created_at":"2026-05-18T01:10:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06592","created_at":"2026-05-18T01:10:50Z"},{"alias_kind":"pith_short_12","alias_value":"HZ2X5XDR56M3","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"HZ2X5XDR56M365HM","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"HZ2X5XDR","created_at":"2026-05-18T12:30:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:HZ2X5XDR56M365HMJM2JYLSLXG","target":"record","payload":{"canonical_record":{"source":{"id":"1602.06592","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-02-21T22:40:58Z","cross_cats_sorted":[],"title_canon_sha256":"fbf3bc370e7a9f798a3d445d01158e23440e0628768df2bb78d91f1fff2d896b","abstract_canon_sha256":"554c1d30eae8ca01e8210a723bd55165317fe00457c78cd3baaed19d7798a885"},"schema_version":"1.0"},"canonical_sha256":"3e757edc71ef99bf74ec4b349c2e4bb9b173c1031c110a164cb200b95f8b5617","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:50.897024Z","signature_b64":"z/7jcwjXKG/6bQh0BtWWyHtlXNg3e4KUPQCpgttv/NBiPgNnpJw2s/FB0PO24gBbcIIwZoB2CDexLrUbVaJwBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e757edc71ef99bf74ec4b349c2e4bb9b173c1031c110a164cb200b95f8b5617","last_reissued_at":"2026-05-18T01:10:50.896335Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:50.896335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.06592","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":"2026-05-18T01:10:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sdpkm8Gr4vLeg8cUD2RIfTHLoFUPWgRXbZvaC+BemgO47/E4VDSLJ2pDy3M5DAPj0EtWbKTAAAZ0C2+YhkoQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T12:39:54.449971Z"},"content_sha256":"fc14ea7b6a67582b1a68e927dc8f5a91f8bd0078e715b23a08717350895553d7","schema_version":"1.0","event_id":"sha256:fc14ea7b6a67582b1a68e927dc8f5a91f8bd0078e715b23a08717350895553d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:HZ2X5XDR56M365HMJM2JYLSLXG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Active galactic nuclei at gamma-ray energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Berrie Giebels, Charles Dennison Dermer","submitted_at":"2016-02-21T22:40:58Z","abstract_excerpt":"Active Galactic Nuclei can be copious extragalactic emitters of MeV-GeV-TeV gamma rays, a phenomenon linked to the presence of relativistic jets powered by a super-massive black hole in the center of the host galaxy. Most of gamma-ray emitting active galactic nuclei, with more than 1500 known at GeV energies, and more than 60 at TeV energies, are called \"blazars\". The standard blazar paradigm features a jet of relativistic magnetized plasma ejected from the neighborhood of a spinning and accreting super-massive black hole, close to the observer direction. Two classes of blazars are distinguish"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06592","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":"2026-05-18T01:10:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ofqxTsgKwGddm7YCeo16afyz7lo66/9kHEn7qj6+MfOMoNCSSfka65p7jdopkVbhYUpKKDcIODi2Ncyd7J2UCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T12:39:54.450332Z"},"content_sha256":"ee93189edc29f7e3bf354199bd81868ee8661c8923cf5db5b99f80948522db82","schema_version":"1.0","event_id":"sha256:ee93189edc29f7e3bf354199bd81868ee8661c8923cf5db5b99f80948522db82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HZ2X5XDR56M365HMJM2JYLSLXG/bundle.json","state_url":"https://pith.science/pith/HZ2X5XDR56M365HMJM2JYLSLXG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HZ2X5XDR56M365HMJM2JYLSLXG/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":"2026-06-07T12:39:54Z","links":{"resolver":"https://pith.science/pith/HZ2X5XDR56M365HMJM2JYLSLXG","bundle":"https://pith.science/pith/HZ2X5XDR56M365HMJM2JYLSLXG/bundle.json","state":"https://pith.science/pith/HZ2X5XDR56M365HMJM2JYLSLXG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HZ2X5XDR56M365HMJM2JYLSLXG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:HZ2X5XDR56M365HMJM2JYLSLXG","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":"554c1d30eae8ca01e8210a723bd55165317fe00457c78cd3baaed19d7798a885","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-02-21T22:40:58Z","title_canon_sha256":"fbf3bc370e7a9f798a3d445d01158e23440e0628768df2bb78d91f1fff2d896b"},"schema_version":"1.0","source":{"id":"1602.06592","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.06592","created_at":"2026-05-18T01:10:50Z"},{"alias_kind":"arxiv_version","alias_value":"1602.06592v1","created_at":"2026-05-18T01:10:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.06592","created_at":"2026-05-18T01:10:50Z"},{"alias_kind":"pith_short_12","alias_value":"HZ2X5XDR56M3","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_16","alias_value":"HZ2X5XDR56M365HM","created_at":"2026-05-18T12:30:22Z"},{"alias_kind":"pith_short_8","alias_value":"HZ2X5XDR","created_at":"2026-05-18T12:30:22Z"}],"graph_snapshots":[{"event_id":"sha256:ee93189edc29f7e3bf354199bd81868ee8661c8923cf5db5b99f80948522db82","target":"graph","created_at":"2026-05-18T01:10:50Z","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":"Active Galactic Nuclei can be copious extragalactic emitters of MeV-GeV-TeV gamma rays, a phenomenon linked to the presence of relativistic jets powered by a super-massive black hole in the center of the host galaxy. Most of gamma-ray emitting active galactic nuclei, with more than 1500 known at GeV energies, and more than 60 at TeV energies, are called \"blazars\". The standard blazar paradigm features a jet of relativistic magnetized plasma ejected from the neighborhood of a spinning and accreting super-massive black hole, close to the observer direction. Two classes of blazars are distinguish","authors_text":"Berrie Giebels, Charles Dennison Dermer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-02-21T22:40:58Z","title":"Active galactic nuclei at gamma-ray energies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.06592","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:fc14ea7b6a67582b1a68e927dc8f5a91f8bd0078e715b23a08717350895553d7","target":"record","created_at":"2026-05-18T01:10:50Z","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":"554c1d30eae8ca01e8210a723bd55165317fe00457c78cd3baaed19d7798a885","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-02-21T22:40:58Z","title_canon_sha256":"fbf3bc370e7a9f798a3d445d01158e23440e0628768df2bb78d91f1fff2d896b"},"schema_version":"1.0","source":{"id":"1602.06592","kind":"arxiv","version":1}},"canonical_sha256":"3e757edc71ef99bf74ec4b349c2e4bb9b173c1031c110a164cb200b95f8b5617","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e757edc71ef99bf74ec4b349c2e4bb9b173c1031c110a164cb200b95f8b5617","first_computed_at":"2026-05-18T01:10:50.896335Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:50.896335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z/7jcwjXKG/6bQh0BtWWyHtlXNg3e4KUPQCpgttv/NBiPgNnpJw2s/FB0PO24gBbcIIwZoB2CDexLrUbVaJwBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:50.897024Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.06592","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc14ea7b6a67582b1a68e927dc8f5a91f8bd0078e715b23a08717350895553d7","sha256:ee93189edc29f7e3bf354199bd81868ee8661c8923cf5db5b99f80948522db82"],"state_sha256":"5e6d0e4d829350dd737ea97d218339efca434c988a245c4849a1771abcc78c1f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S7ltkHddIsFlco2k1JBcV6Yqa+ICqqWGHgfbbSUL1PwdrQM+fgVZdQ9JWqVeqLwkzq8xcv1vBcWq7A8BoD9nDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T12:39:54.452270Z","bundle_sha256":"86bcd010a3df9ac465ba265667e35e9eb7aec5b8ff3883c533a7c30b711adeec"}}