{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CCDPEAGFR23V64P2O2KVLY2VZ3","short_pith_number":"pith:CCDPEAGF","canonical_record":{"source":{"id":"1202.4250","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-20T08:31:06Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"847c73ece6d26dc394d6935b0b8898f5a540067d17562ff8c922f2f857598fbd","abstract_canon_sha256":"bee2e72c9ed027d416e5ab3db39e0c25eb8a69d31904a985185819594b63c14d"},"schema_version":"1.0"},"canonical_sha256":"1086f200c58eb75f71fa769555e355cecf1bf9798d445f2f65f024316a381ffa","source":{"kind":"arxiv","id":"1202.4250","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4250","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4250v1","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4250","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"CCDPEAGFR23V","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CCDPEAGFR23V64P2","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CCDPEAGF","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CCDPEAGFR23V64P2O2KVLY2VZ3","target":"record","payload":{"canonical_record":{"source":{"id":"1202.4250","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-20T08:31:06Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"847c73ece6d26dc394d6935b0b8898f5a540067d17562ff8c922f2f857598fbd","abstract_canon_sha256":"bee2e72c9ed027d416e5ab3db39e0c25eb8a69d31904a985185819594b63c14d"},"schema_version":"1.0"},"canonical_sha256":"1086f200c58eb75f71fa769555e355cecf1bf9798d445f2f65f024316a381ffa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:23.690435Z","signature_b64":"jdLu6nb3RrbZ+h3MnCQWvolv8kqL7c5QadpefnHCfz03tUssY3V4INJALlTDdjGZEda6cOu2Vxj7HagJh7bbCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1086f200c58eb75f71fa769555e355cecf1bf9798d445f2f65f024316a381ffa","last_reissued_at":"2026-05-18T01:58:23.689984Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:23.689984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.4250","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":"2026-05-18T01:58:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Kv+mfsJnMkvZH7/aL+J9kt03mjH2W3VLJwslbaK3z01cLp+S4EbDdZiPtYhjff27067rXcD+NZOHD8RZKnRBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T05:38:28.164365Z"},"content_sha256":"d19be8bea26d20b4ad13d076c74ae642ba4ea73c1b36f7fe3902df9bf86e1ad5","schema_version":"1.0","event_id":"sha256:d19be8bea26d20b4ad13d076c74ae642ba4ea73c1b36f7fe3902df9bf86e1ad5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CCDPEAGFR23V64P2O2KVLY2VZ3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The contribution from blazar cascade emission to the extragalactic gamma-ray background: What a role does the extragalactic magnetic field play?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Dahai Yan, Houdun Zeng, Li Zhang","submitted_at":"2012-02-20T08:31:06Z","abstract_excerpt":"We estimate the contribution to the extragalactic gamma-ray background (EGRB) from both intrinsic and cascade emissions produced by blazars using a simple semi- analysis method for two models of the blazar gamma-ray luminosity function (GLF). For the cascade emission, we consider two possible contributions: one is due to that the flux of the cascade emission is lower than the Fermi LAT sensitivity (case I), which is independent on the extragalactic magnetic field (EGMF), another is due to the fact that the flux of the cascade emission is larger than the Fermi LAT sensitivity but the emission a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4250","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":"2026-05-18T01:58:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E25gkS1KW0gOBvkoX2Ly+Q/qF/pMNzQcmDKX1jcd5B7YiiXYuhdgZK1ZDEoHn2CaFNV/md72P/B+u/Lmk7q2Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T05:38:28.165057Z"},"content_sha256":"3ec5fcc8c3a7f13bf4f403a6554cd2c598f21763dc285d25a105e835f7ff4e2d","schema_version":"1.0","event_id":"sha256:3ec5fcc8c3a7f13bf4f403a6554cd2c598f21763dc285d25a105e835f7ff4e2d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CCDPEAGFR23V64P2O2KVLY2VZ3/bundle.json","state_url":"https://pith.science/pith/CCDPEAGFR23V64P2O2KVLY2VZ3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CCDPEAGFR23V64P2O2KVLY2VZ3/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":"2026-05-23T05:38:28Z","links":{"resolver":"https://pith.science/pith/CCDPEAGFR23V64P2O2KVLY2VZ3","bundle":"https://pith.science/pith/CCDPEAGFR23V64P2O2KVLY2VZ3/bundle.json","state":"https://pith.science/pith/CCDPEAGFR23V64P2O2KVLY2VZ3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CCDPEAGFR23V64P2O2KVLY2VZ3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CCDPEAGFR23V64P2O2KVLY2VZ3","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":"bee2e72c9ed027d416e5ab3db39e0c25eb8a69d31904a985185819594b63c14d","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-20T08:31:06Z","title_canon_sha256":"847c73ece6d26dc394d6935b0b8898f5a540067d17562ff8c922f2f857598fbd"},"schema_version":"1.0","source":{"id":"1202.4250","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4250","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4250v1","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4250","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"CCDPEAGFR23V","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CCDPEAGFR23V64P2","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CCDPEAGF","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:3ec5fcc8c3a7f13bf4f403a6554cd2c598f21763dc285d25a105e835f7ff4e2d","target":"graph","created_at":"2026-05-18T01:58:23Z","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":"We estimate the contribution to the extragalactic gamma-ray background (EGRB) from both intrinsic and cascade emissions produced by blazars using a simple semi- analysis method for two models of the blazar gamma-ray luminosity function (GLF). For the cascade emission, we consider two possible contributions: one is due to that the flux of the cascade emission is lower than the Fermi LAT sensitivity (case I), which is independent on the extragalactic magnetic field (EGMF), another is due to the fact that the flux of the cascade emission is larger than the Fermi LAT sensitivity but the emission a","authors_text":"Dahai Yan, Houdun Zeng, Li Zhang","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-20T08:31:06Z","title":"The contribution from blazar cascade emission to the extragalactic gamma-ray background: What a role does the extragalactic magnetic field play?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4250","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:d19be8bea26d20b4ad13d076c74ae642ba4ea73c1b36f7fe3902df9bf86e1ad5","target":"record","created_at":"2026-05-18T01:58:23Z","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":"bee2e72c9ed027d416e5ab3db39e0c25eb8a69d31904a985185819594b63c14d","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-02-20T08:31:06Z","title_canon_sha256":"847c73ece6d26dc394d6935b0b8898f5a540067d17562ff8c922f2f857598fbd"},"schema_version":"1.0","source":{"id":"1202.4250","kind":"arxiv","version":1}},"canonical_sha256":"1086f200c58eb75f71fa769555e355cecf1bf9798d445f2f65f024316a381ffa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1086f200c58eb75f71fa769555e355cecf1bf9798d445f2f65f024316a381ffa","first_computed_at":"2026-05-18T01:58:23.689984Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:23.689984Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jdLu6nb3RrbZ+h3MnCQWvolv8kqL7c5QadpefnHCfz03tUssY3V4INJALlTDdjGZEda6cOu2Vxj7HagJh7bbCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:23.690435Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4250","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d19be8bea26d20b4ad13d076c74ae642ba4ea73c1b36f7fe3902df9bf86e1ad5","sha256:3ec5fcc8c3a7f13bf4f403a6554cd2c598f21763dc285d25a105e835f7ff4e2d"],"state_sha256":"ce6126ad031a1d84d5434359f2af5773751e3ce6813c0c519fdaa333adde2f16"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X2qRH0WvSy8M4qXn7GcXjVuSJ7pNR6GJzWhkzrTgxe1QILFzoAIDPOJMmCm9zl1pAaE9VW/EXob8+eIb3iL3Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T05:38:28.168254Z","bundle_sha256":"31b37c6dac2c0427ecd18d905247d300aa7e340a86d03b96504b506b33b6071c"}}