{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZI54HW6Y4O7XEBU5KVMVHM2ODI","short_pith_number":"pith:ZI54HW6Y","canonical_record":{"source":{"id":"1206.1896","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-09T01:18:44Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"0ff46afd3077fb5969c07764ca576b9f28e554cdc6b72f52b82fde1bb6a55bca","abstract_canon_sha256":"3df92d172ba93f1a976939e24da2c998d08b4ae01079782e0f0f85e0dafa4c02"},"schema_version":"1.0"},"canonical_sha256":"ca3bc3dbd8e3bf72069d555953b34e1a2dc33b85553349615c538d49273222f1","source":{"kind":"arxiv","id":"1206.1896","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.1896","created_at":"2026-05-18T02:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"1206.1896v2","created_at":"2026-05-18T02:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.1896","created_at":"2026-05-18T02:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"ZI54HW6Y4O7X","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZI54HW6Y4O7XEBU5","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZI54HW6Y","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZI54HW6Y4O7XEBU5KVMVHM2ODI","target":"record","payload":{"canonical_record":{"source":{"id":"1206.1896","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-09T01:18:44Z","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"title_canon_sha256":"0ff46afd3077fb5969c07764ca576b9f28e554cdc6b72f52b82fde1bb6a55bca","abstract_canon_sha256":"3df92d172ba93f1a976939e24da2c998d08b4ae01079782e0f0f85e0dafa4c02"},"schema_version":"1.0"},"canonical_sha256":"ca3bc3dbd8e3bf72069d555953b34e1a2dc33b85553349615c538d49273222f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:21:09.087219Z","signature_b64":"MERugePouHTpKa132gU59n38nF7h/qkvOlbhfequoyYeQfFD/+QKM4Zs+DXGXKBWXKmEamu+RhS1kPU61bgLDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ca3bc3dbd8e3bf72069d555953b34e1a2dc33b85553349615c538d49273222f1","last_reissued_at":"2026-05-18T02:21:09.086851Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:21:09.086851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.1896","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":"2026-05-18T02:21:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SokduzTtcT4V9xCyrDpnJOhUIRzajxoPK2XgLwlKOdg4Q2WQqsqJZ47zpkbQwTY57MrzzPx9/VruwqshGhlzAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:30:43.263650Z"},"content_sha256":"7b529fa24a8a0bf5e3b768eb9629c232ae276de5a71a7c567c4ea342affa4a84","schema_version":"1.0","event_id":"sha256:7b529fa24a8a0bf5e3b768eb9629c232ae276de5a71a7c567c4ea342affa4a84"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZI54HW6Y4O7XEBU5KVMVHM2ODI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Fermi Large Area Telescope On Orbit: Event Classification, Instrument Response Functions, and Calibration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.HE"],"primary_cat":"astro-ph.IM","authors_text":"Fermi-LAT Collaboration","submitted_at":"2012-06-09T01:18:44Z","abstract_excerpt":"The Fermi Large Area Telescope (Fermi-LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy \\gamma-ray telescope, covering the energy range from 20 MeV to more than 300 GeV. During the first years of the mission the LAT team has gained considerable insight into the in-flight performance of the instrument. Accordingly, we have updated the analysis used to reduce LAT data for public release as well as the Instrument Response Functions (IRFs), the description of the instrument performance provided for dat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.1896","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":"2026-05-18T02:21:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yQL6ZGdu3ruDeFRQRIY6/oJp2hUc2fJBr1FNRvUt86B15m42F5efZaiGb7YwJngKWmytY61SOhixgBSce0oLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T15:30:43.264033Z"},"content_sha256":"cf3bb62d57758e4cc4ed2228e4792bd511cbd2f4d914497e46a2b12e6d02e3d9","schema_version":"1.0","event_id":"sha256:cf3bb62d57758e4cc4ed2228e4792bd511cbd2f4d914497e46a2b12e6d02e3d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI/bundle.json","state_url":"https://pith.science/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI/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":"2026-06-01T15:30:43Z","links":{"resolver":"https://pith.science/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI","bundle":"https://pith.science/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI/bundle.json","state":"https://pith.science/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZI54HW6Y4O7XEBU5KVMVHM2ODI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZI54HW6Y4O7XEBU5KVMVHM2ODI","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":"3df92d172ba93f1a976939e24da2c998d08b4ae01079782e0f0f85e0dafa4c02","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-09T01:18:44Z","title_canon_sha256":"0ff46afd3077fb5969c07764ca576b9f28e554cdc6b72f52b82fde1bb6a55bca"},"schema_version":"1.0","source":{"id":"1206.1896","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.1896","created_at":"2026-05-18T02:21:09Z"},{"alias_kind":"arxiv_version","alias_value":"1206.1896v2","created_at":"2026-05-18T02:21:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.1896","created_at":"2026-05-18T02:21:09Z"},{"alias_kind":"pith_short_12","alias_value":"ZI54HW6Y4O7X","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZI54HW6Y4O7XEBU5","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZI54HW6Y","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:cf3bb62d57758e4cc4ed2228e4792bd511cbd2f4d914497e46a2b12e6d02e3d9","target":"graph","created_at":"2026-05-18T02:21:09Z","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, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view, high-energy \\gamma-ray telescope, covering the energy range from 20 MeV to more than 300 GeV. During the first years of the mission the LAT team has gained considerable insight into the in-flight performance of the instrument. Accordingly, we have updated the analysis used to reduce LAT data for public release as well as the Instrument Response Functions (IRFs), the description of the instrument performance provided for dat","authors_text":"Fermi-LAT Collaboration","cross_cats":["astro-ph.CO","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-09T01:18:44Z","title":"The Fermi Large Area Telescope On Orbit: Event Classification, Instrument Response Functions, and Calibration"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.1896","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":"sha256:7b529fa24a8a0bf5e3b768eb9629c232ae276de5a71a7c567c4ea342affa4a84","target":"record","created_at":"2026-05-18T02:21:09Z","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":"3df92d172ba93f1a976939e24da2c998d08b4ae01079782e0f0f85e0dafa4c02","cross_cats_sorted":["astro-ph.CO","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2012-06-09T01:18:44Z","title_canon_sha256":"0ff46afd3077fb5969c07764ca576b9f28e554cdc6b72f52b82fde1bb6a55bca"},"schema_version":"1.0","source":{"id":"1206.1896","kind":"arxiv","version":2}},"canonical_sha256":"ca3bc3dbd8e3bf72069d555953b34e1a2dc33b85553349615c538d49273222f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ca3bc3dbd8e3bf72069d555953b34e1a2dc33b85553349615c538d49273222f1","first_computed_at":"2026-05-18T02:21:09.086851Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:21:09.086851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MERugePouHTpKa132gU59n38nF7h/qkvOlbhfequoyYeQfFD/+QKM4Zs+DXGXKBWXKmEamu+RhS1kPU61bgLDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:21:09.087219Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.1896","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b529fa24a8a0bf5e3b768eb9629c232ae276de5a71a7c567c4ea342affa4a84","sha256:cf3bb62d57758e4cc4ed2228e4792bd511cbd2f4d914497e46a2b12e6d02e3d9"],"state_sha256":"c1acdee4440ab6e3bf6bae7a786af488dcdb82da11977d9e664e90fc83176ac4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6EwR/CVONegweYVrtobggxbGuZni+Mx42nkFJlGgETLL/+/XiEiHflDabynYz+yEo6PuK9iwY9LZoisIhz2bDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T15:30:43.266705Z","bundle_sha256":"0422238b157ec41094d1b150d66a0767e7e9d9f20b928a0d45c83e4fd0b2ba4a"}}