{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:NPTDUSYYWMFDPIA2M75UZKA4IQ","short_pith_number":"pith:NPTDUSYY","canonical_record":{"source":{"id":"1603.04074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-13T21:01:47Z","cross_cats_sorted":[],"title_canon_sha256":"bace0c7c680d03cc595fcfb6f62258547919a7df388c899dfff0f107e20cafc0","abstract_canon_sha256":"6ba312d5c5a0c69ba39216cbb0ef4653834356a7366b2a7e4ad9d5fdd1e0a9ce"},"schema_version":"1.0"},"canonical_sha256":"6be63a4b18b30a37a01a67fb4ca81c442ca5f7431b26344f79dfd77ee94411e1","source":{"kind":"arxiv","id":"1603.04074","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04074","created_at":"2026-05-18T01:13:54Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04074v1","created_at":"2026-05-18T01:13:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04074","created_at":"2026-05-18T01:13:54Z"},{"alias_kind":"pith_short_12","alias_value":"NPTDUSYYWMFD","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"NPTDUSYYWMFDPIA2","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"NPTDUSYY","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:NPTDUSYYWMFDPIA2M75UZKA4IQ","target":"record","payload":{"canonical_record":{"source":{"id":"1603.04074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-13T21:01:47Z","cross_cats_sorted":[],"title_canon_sha256":"bace0c7c680d03cc595fcfb6f62258547919a7df388c899dfff0f107e20cafc0","abstract_canon_sha256":"6ba312d5c5a0c69ba39216cbb0ef4653834356a7366b2a7e4ad9d5fdd1e0a9ce"},"schema_version":"1.0"},"canonical_sha256":"6be63a4b18b30a37a01a67fb4ca81c442ca5f7431b26344f79dfd77ee94411e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:54.247104Z","signature_b64":"oxiI3iUlD57L4PoLQatremouZOlwSkgt5ubrrt3U+bc8ng05dJHIKHLihS+06gJKfyaA/KlwIn35vXNlulgfBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6be63a4b18b30a37a01a67fb4ca81c442ca5f7431b26344f79dfd77ee94411e1","last_reissued_at":"2026-05-18T01:13:54.246271Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:54.246271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.04074","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":"2026-05-18T01:13:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rNSfbuC5O45xq8A3zbmsU7xm4mkoAJQ80b3iOJyTDFbNZAQdXJ4dIJM25W1k7IX17D91p/H2pbuXId5UHX0PDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:19:39.589655Z"},"content_sha256":"c21d3978ad16dbb88895bed320912387a4b719c672e6eb26770c0cae6c4c5e1b","schema_version":"1.0","event_id":"sha256:c21d3978ad16dbb88895bed320912387a4b719c672e6eb26770c0cae6c4c5e1b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:NPTDUSYYWMFDPIA2M75UZKA4IQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On ultra high energy cosmic rays and their resultant gamma rays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"David Eichler, Eyal Gavish","submitted_at":"2016-03-13T21:01:47Z","abstract_excerpt":"The Fermi Large Area Telescope (Fermi LAT) collaboration has recently reported on 50 months of measurements of the isotropic Extragalactic Gamma Ray Background (EGRB) spectrum between $100\\mbox{MeV}$ and $820\\mbox{GeV}$. Ultrahigh Energy Cosmic Ray (UHECR) protons interact with the Cosmic Microwave Background (CMB) photons and produce cascade photons of energies $10\\mbox{MeV}\\mbox{-}1\\mbox{TeV}$ that contribute to the EGRB flux. We examine seven possible evolution models for UHECRs and find that UHECR sources that evolve as the Star Formation Rate (SFR), medium low luminosity active galactic n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04074","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":"2026-05-18T01:13:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rINQIZE5QX5aZ5X7Rt6dW7TQtz0nOhKQX/aFKuAN21BUr69+vvp/9Hp6t/DRhNbcv2Ba2Wxa3AKl90ww0Xw+DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:19:39.589999Z"},"content_sha256":"82f1bbf06c7cd671240884d358b08b0a1aad5dfa4a15f63f36059f69c46e52f2","schema_version":"1.0","event_id":"sha256:82f1bbf06c7cd671240884d358b08b0a1aad5dfa4a15f63f36059f69c46e52f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ/bundle.json","state_url":"https://pith.science/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ/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":"2026-05-28T09:19:39Z","links":{"resolver":"https://pith.science/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ","bundle":"https://pith.science/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ/bundle.json","state":"https://pith.science/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NPTDUSYYWMFDPIA2M75UZKA4IQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:NPTDUSYYWMFDPIA2M75UZKA4IQ","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":"6ba312d5c5a0c69ba39216cbb0ef4653834356a7366b2a7e4ad9d5fdd1e0a9ce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-13T21:01:47Z","title_canon_sha256":"bace0c7c680d03cc595fcfb6f62258547919a7df388c899dfff0f107e20cafc0"},"schema_version":"1.0","source":{"id":"1603.04074","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.04074","created_at":"2026-05-18T01:13:54Z"},{"alias_kind":"arxiv_version","alias_value":"1603.04074v1","created_at":"2026-05-18T01:13:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.04074","created_at":"2026-05-18T01:13:54Z"},{"alias_kind":"pith_short_12","alias_value":"NPTDUSYYWMFD","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"NPTDUSYYWMFDPIA2","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"NPTDUSYY","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:82f1bbf06c7cd671240884d358b08b0a1aad5dfa4a15f63f36059f69c46e52f2","target":"graph","created_at":"2026-05-18T01:13:54Z","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":"The Fermi Large Area Telescope (Fermi LAT) collaboration has recently reported on 50 months of measurements of the isotropic Extragalactic Gamma Ray Background (EGRB) spectrum between $100\\mbox{MeV}$ and $820\\mbox{GeV}$. Ultrahigh Energy Cosmic Ray (UHECR) protons interact with the Cosmic Microwave Background (CMB) photons and produce cascade photons of energies $10\\mbox{MeV}\\mbox{-}1\\mbox{TeV}$ that contribute to the EGRB flux. We examine seven possible evolution models for UHECRs and find that UHECR sources that evolve as the Star Formation Rate (SFR), medium low luminosity active galactic n","authors_text":"David Eichler, Eyal Gavish","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-13T21:01:47Z","title":"On ultra high energy cosmic rays and their resultant gamma rays"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.04074","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:c21d3978ad16dbb88895bed320912387a4b719c672e6eb26770c0cae6c4c5e1b","target":"record","created_at":"2026-05-18T01:13:54Z","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":"6ba312d5c5a0c69ba39216cbb0ef4653834356a7366b2a7e4ad9d5fdd1e0a9ce","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-03-13T21:01:47Z","title_canon_sha256":"bace0c7c680d03cc595fcfb6f62258547919a7df388c899dfff0f107e20cafc0"},"schema_version":"1.0","source":{"id":"1603.04074","kind":"arxiv","version":1}},"canonical_sha256":"6be63a4b18b30a37a01a67fb4ca81c442ca5f7431b26344f79dfd77ee94411e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6be63a4b18b30a37a01a67fb4ca81c442ca5f7431b26344f79dfd77ee94411e1","first_computed_at":"2026-05-18T01:13:54.246271Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:13:54.246271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oxiI3iUlD57L4PoLQatremouZOlwSkgt5ubrrt3U+bc8ng05dJHIKHLihS+06gJKfyaA/KlwIn35vXNlulgfBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:13:54.247104Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.04074","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c21d3978ad16dbb88895bed320912387a4b719c672e6eb26770c0cae6c4c5e1b","sha256:82f1bbf06c7cd671240884d358b08b0a1aad5dfa4a15f63f36059f69c46e52f2"],"state_sha256":"d7b0b932e3ec8d5339fa66073bc1a3d66b6048d51284ceee4e3a576c60ecbd64"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zSi5jOse3qhLdwkdheopaEOM+a2hSPVjLyBHCvlmEYTAjlvCQcD4HRTXbcO2BM/L1lKwqlcpDOCA9k2acwwBAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T09:19:39.591940Z","bundle_sha256":"e7a0509f88a615eaa27a79fd327e177a60ff5369c1e5d950044a8eaaf498ba61"}}