{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:P222IF53ENOUTOE2ZR3EJOW4IB","short_pith_number":"pith:P222IF53","canonical_record":{"source":{"id":"1102.1050","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-02-05T04:23:10Z","cross_cats_sorted":[],"title_canon_sha256":"928b9f217caa5abc18ecba2e9ebf5fffdc55f54fafb2f16c2f965c2557d23077","abstract_canon_sha256":"e2fedad2268eda994e08af3378404df09416d971ba238750b29a17af6f667478"},"schema_version":"1.0"},"canonical_sha256":"7eb5a417bb235d49b89acc7644badc40563734e8e52e2e2dc8247c65b5bee89f","source":{"kind":"arxiv","id":"1102.1050","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1050","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1050v1","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1050","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"P222IF53ENOU","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"P222IF53ENOUTOE2","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"P222IF53","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:P222IF53ENOUTOE2ZR3EJOW4IB","target":"record","payload":{"canonical_record":{"source":{"id":"1102.1050","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-02-05T04:23:10Z","cross_cats_sorted":[],"title_canon_sha256":"928b9f217caa5abc18ecba2e9ebf5fffdc55f54fafb2f16c2f965c2557d23077","abstract_canon_sha256":"e2fedad2268eda994e08af3378404df09416d971ba238750b29a17af6f667478"},"schema_version":"1.0"},"canonical_sha256":"7eb5a417bb235d49b89acc7644badc40563734e8e52e2e2dc8247c65b5bee89f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:16.402900Z","signature_b64":"oE/+IfKyLsrp6ATBJhJjROIAXB1eKeHFVquxkojDozcPgGCHSpJst7YRzJ2UGsSu2gLsy22hXENwncxqIjjhAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7eb5a417bb235d49b89acc7644badc40563734e8e52e2e2dc8247c65b5bee89f","last_reissued_at":"2026-05-18T02:03:16.402202Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:16.402202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1102.1050","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":"2026-05-18T02:03:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wPwyacEP9X8Xqhnzs1R3JSTR+cfDnZCSLNjiYh2yN7cEq6gA2DMD6INIpYUT4eRMiVpI4XbxMu0KrlxnVIzqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T04:55:54.743122Z"},"content_sha256":"b4a200fdf5d518358c3979af1365de9a3e910a8e72639bf952500d46a84778a6","schema_version":"1.0","event_id":"sha256:b4a200fdf5d518358c3979af1365de9a3e910a8e72639bf952500d46a84778a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:P222IF53ENOUTOE2ZR3EJOW4IB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Status of the Stratospheric Observatory for Infrared Astronomy (SOFIA)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"A. Krabbe, E. E. Becklin, E. T. Young, G. H. L. Sandell, H. Zinnecker, J. de Buizer, L. D. Keller, P. M. Marcum, P. Temi, R. D. Gehrz, T. Herter, T. L. Roellig, W. D. Vacca","submitted_at":"2011-02-05T04:23:10Z","abstract_excerpt":"The Stratospheric Observatory for Infrared Astronomy (SOFIA), a joint U.S./German project, is a 2.5-meter infrared airborne telescope carried by a Boeing 747-SP that flies in the stratosphere at altitudes as high as 45,000 feet (13.72 km). This facility is capable of observing from 0.3 {\\mu}m to 1.6 mm with an average transmission greater than 80 percent. SOFIA will be staged out of the NASA Dryden Flight Research Center aircraft operations facility at Palmdale, CA. The SOFIA Science Mission Operations (SMO) will be located at NASA Ames Research Center, Moffett Field, CA. First science flights"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1050","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":"2026-05-18T02:03:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AzhMv5/g4QXJ/hyvUaeh2KaJiF7eNZ2sQpRcqnW/dG5fseIi3xcP4YWhqkQyhtfF4ROFtYoVXVq7oXc2pa4iBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T04:55:54.743515Z"},"content_sha256":"06eb8752dc3e859f55511f9379fd0d7c0775f935e0b3d4e3c5e282a469ea16c9","schema_version":"1.0","event_id":"sha256:06eb8752dc3e859f55511f9379fd0d7c0775f935e0b3d4e3c5e282a469ea16c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P222IF53ENOUTOE2ZR3EJOW4IB/bundle.json","state_url":"https://pith.science/pith/P222IF53ENOUTOE2ZR3EJOW4IB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P222IF53ENOUTOE2ZR3EJOW4IB/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":"2026-05-30T04:55:54Z","links":{"resolver":"https://pith.science/pith/P222IF53ENOUTOE2ZR3EJOW4IB","bundle":"https://pith.science/pith/P222IF53ENOUTOE2ZR3EJOW4IB/bundle.json","state":"https://pith.science/pith/P222IF53ENOUTOE2ZR3EJOW4IB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P222IF53ENOUTOE2ZR3EJOW4IB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:P222IF53ENOUTOE2ZR3EJOW4IB","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":"e2fedad2268eda994e08af3378404df09416d971ba238750b29a17af6f667478","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-02-05T04:23:10Z","title_canon_sha256":"928b9f217caa5abc18ecba2e9ebf5fffdc55f54fafb2f16c2f965c2557d23077"},"schema_version":"1.0","source":{"id":"1102.1050","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1102.1050","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"arxiv_version","alias_value":"1102.1050v1","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1102.1050","created_at":"2026-05-18T02:03:16Z"},{"alias_kind":"pith_short_12","alias_value":"P222IF53ENOU","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"P222IF53ENOUTOE2","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"P222IF53","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:06eb8752dc3e859f55511f9379fd0d7c0775f935e0b3d4e3c5e282a469ea16c9","target":"graph","created_at":"2026-05-18T02:03:16Z","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 Stratospheric Observatory for Infrared Astronomy (SOFIA), a joint U.S./German project, is a 2.5-meter infrared airborne telescope carried by a Boeing 747-SP that flies in the stratosphere at altitudes as high as 45,000 feet (13.72 km). This facility is capable of observing from 0.3 {\\mu}m to 1.6 mm with an average transmission greater than 80 percent. SOFIA will be staged out of the NASA Dryden Flight Research Center aircraft operations facility at Palmdale, CA. The SOFIA Science Mission Operations (SMO) will be located at NASA Ames Research Center, Moffett Field, CA. First science flights","authors_text":"A. Krabbe, E. E. Becklin, E. T. Young, G. H. L. Sandell, H. Zinnecker, J. de Buizer, L. D. Keller, P. M. Marcum, P. Temi, R. D. Gehrz, T. Herter, T. L. Roellig, W. D. Vacca","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-02-05T04:23:10Z","title":"Status of the Stratospheric Observatory for Infrared Astronomy (SOFIA)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.1050","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:b4a200fdf5d518358c3979af1365de9a3e910a8e72639bf952500d46a84778a6","target":"record","created_at":"2026-05-18T02:03:16Z","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":"e2fedad2268eda994e08af3378404df09416d971ba238750b29a17af6f667478","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2011-02-05T04:23:10Z","title_canon_sha256":"928b9f217caa5abc18ecba2e9ebf5fffdc55f54fafb2f16c2f965c2557d23077"},"schema_version":"1.0","source":{"id":"1102.1050","kind":"arxiv","version":1}},"canonical_sha256":"7eb5a417bb235d49b89acc7644badc40563734e8e52e2e2dc8247c65b5bee89f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7eb5a417bb235d49b89acc7644badc40563734e8e52e2e2dc8247c65b5bee89f","first_computed_at":"2026-05-18T02:03:16.402202Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:16.402202Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oE/+IfKyLsrp6ATBJhJjROIAXB1eKeHFVquxkojDozcPgGCHSpJst7YRzJ2UGsSu2gLsy22hXENwncxqIjjhAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:16.402900Z","signed_message":"canonical_sha256_bytes"},"source_id":"1102.1050","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4a200fdf5d518358c3979af1365de9a3e910a8e72639bf952500d46a84778a6","sha256:06eb8752dc3e859f55511f9379fd0d7c0775f935e0b3d4e3c5e282a469ea16c9"],"state_sha256":"e082a7699f5d4bff3fc963a46942c6b098ad1f9dd8e7435ec846c0daea26f58c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QnwUlPfwUKUPvotWBt5ZODh20QfiTV36FkdUqjq3EINZJuKwL/6Q4Kv6ZpGpdH8GEXQjYwQwPMBOslGDXvoaBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T04:55:54.745553Z","bundle_sha256":"4c27ac449e0e658899b65580b7c22ac57252306a78e4c358b4c9f09ff62966fc"}}