{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:HPVAAGZW6BN37RKE72D5Q7L3ZY","short_pith_number":"pith:HPVAAGZW","canonical_record":{"source":{"id":"1304.5488","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-19T17:46:28Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"1eba068e13118ff4466a78b08c2b9a00a4ad559c85b79ecc95e02b42e1fcb982","abstract_canon_sha256":"9f89ea527b05842c7c6bb85724a3cdd31e2f87d0f8e2332aad52caa9e0a0a58f"},"schema_version":"1.0"},"canonical_sha256":"3bea001b36f05bbfc544fe87d87d7bce05e9d4fe1fdc0fb455954c0b81ecfe99","source":{"kind":"arxiv","id":"1304.5488","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5488","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5488v1","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5488","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"pith_short_12","alias_value":"HPVAAGZW6BN3","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HPVAAGZW6BN37RKE","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HPVAAGZW","created_at":"2026-05-18T12:27:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:HPVAAGZW6BN37RKE72D5Q7L3ZY","target":"record","payload":{"canonical_record":{"source":{"id":"1304.5488","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-19T17:46:28Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"1eba068e13118ff4466a78b08c2b9a00a4ad559c85b79ecc95e02b42e1fcb982","abstract_canon_sha256":"9f89ea527b05842c7c6bb85724a3cdd31e2f87d0f8e2332aad52caa9e0a0a58f"},"schema_version":"1.0"},"canonical_sha256":"3bea001b36f05bbfc544fe87d87d7bce05e9d4fe1fdc0fb455954c0b81ecfe99","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:27:33.377247Z","signature_b64":"OC1glKIMg7nIN5MipWYgLEo0DuFQjzjoK3NEjW3quyoIA4K1sfhtFdZlxIwh7Xb3SDUcPkqhHAOGTTve2pD9Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3bea001b36f05bbfc544fe87d87d7bce05e9d4fe1fdc0fb455954c0b81ecfe99","last_reissued_at":"2026-05-18T03:27:33.376764Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:27:33.376764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.5488","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":"2026-05-18T03:27:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pPvoLkz8I3bJicrn7nvrSaLP1PLQZTdTpTVduoxz8I0W16tWjcZyj835CyK2DPHowLtZ9mmqoVIvDVXNBS9NBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:15:41.388081Z"},"content_sha256":"563a7371504d6aa5b2ad71fb52ad51f859072e618e02b6bc76e42fa20f22562a","schema_version":"1.0","event_id":"sha256:563a7371504d6aa5b2ad71fb52ad51f859072e618e02b6bc76e42fa20f22562a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:HPVAAGZW6BN37RKE72D5Q7L3ZY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On-Orbit Degradation of Solar Instruments","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"A. BenMoussa, A. Irbah, A.R. Jones, B. Giordanengo, B. Nicula, C. Jeppesen, C.J. Eyles, D. Berghmans, D. Bewsher, D. Bols\\'ee, D. Gillotay, D. L. Judge, D. R. McMullin, D. S. Brown, D. Seaton, D. Walton, D. Woodraska, F. Auch\\`ere, F. G. Eparvier, G. Cessateur, G. Del Zanna, G. Thuillier, G. Ucker, I. E. Dammasch, J.-P. Halain, L. Bradley, L. V. Didkovsky, M. Dominique, M. Kretzschmar, M. Meftah, P. C. Chamberlin, R. A. Hock, S. Dewitte, S. Gissot, S. Mekaoui, S. Wieman, T. Foujols, T. N. Woods, U. Sch\\\"uhle, V. Andretta, W. Schmutz","submitted_at":"2013-04-19T17:46:28Z","abstract_excerpt":"We present the lessons learned about the degradation observed in several space solar missions, based on contributions at the Workshop about On-Orbit Degradation of Solar and Space Weather Instruments that took place at the Solar Terrestrial Centre of Excellence (Royal Observatory of Belgium) in Brussels on 3 May 2012. The aim of this workshop was to open discussions related to the degradation observed in Sun-observing instruments exposed to the effects of the space environment. This article summarizes the various lessons learned and offers recommendations to reduce or correct expected degradat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5488","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":"2026-05-18T03:27:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"klE0Hb4M1SprG/9mfi2fVwRMlt6wfFdFBT/EchN0yEiU/7FS16UDPyh4j14Mum2TiZES9hjoo2jiAd2nEwa5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:15:41.388823Z"},"content_sha256":"20b0f8140033dd5f4885e2ca24b9f3d43473c730d65c2f5ff344a07baf76bf28","schema_version":"1.0","event_id":"sha256:20b0f8140033dd5f4885e2ca24b9f3d43473c730d65c2f5ff344a07baf76bf28"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY/bundle.json","state_url":"https://pith.science/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY/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":"2026-06-05T22:15:41Z","links":{"resolver":"https://pith.science/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY","bundle":"https://pith.science/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY/bundle.json","state":"https://pith.science/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HPVAAGZW6BN37RKE72D5Q7L3ZY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:HPVAAGZW6BN37RKE72D5Q7L3ZY","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":"9f89ea527b05842c7c6bb85724a3cdd31e2f87d0f8e2332aad52caa9e0a0a58f","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-19T17:46:28Z","title_canon_sha256":"1eba068e13118ff4466a78b08c2b9a00a4ad559c85b79ecc95e02b42e1fcb982"},"schema_version":"1.0","source":{"id":"1304.5488","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5488","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5488v1","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5488","created_at":"2026-05-18T03:27:33Z"},{"alias_kind":"pith_short_12","alias_value":"HPVAAGZW6BN3","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HPVAAGZW6BN37RKE","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HPVAAGZW","created_at":"2026-05-18T12:27:46Z"}],"graph_snapshots":[{"event_id":"sha256:20b0f8140033dd5f4885e2ca24b9f3d43473c730d65c2f5ff344a07baf76bf28","target":"graph","created_at":"2026-05-18T03:27:33Z","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 present the lessons learned about the degradation observed in several space solar missions, based on contributions at the Workshop about On-Orbit Degradation of Solar and Space Weather Instruments that took place at the Solar Terrestrial Centre of Excellence (Royal Observatory of Belgium) in Brussels on 3 May 2012. The aim of this workshop was to open discussions related to the degradation observed in Sun-observing instruments exposed to the effects of the space environment. This article summarizes the various lessons learned and offers recommendations to reduce or correct expected degradat","authors_text":"A. BenMoussa, A. Irbah, A.R. Jones, B. Giordanengo, B. Nicula, C. Jeppesen, C.J. Eyles, D. Berghmans, D. Bewsher, D. Bols\\'ee, D. Gillotay, D. L. Judge, D. R. McMullin, D. S. Brown, D. Seaton, D. Walton, D. Woodraska, F. Auch\\`ere, F. G. Eparvier, G. Cessateur, G. Del Zanna, G. Thuillier, G. Ucker, I. E. Dammasch, J.-P. Halain, L. Bradley, L. V. Didkovsky, M. Dominique, M. Kretzschmar, M. Meftah, P. C. Chamberlin, R. A. Hock, S. Dewitte, S. Gissot, S. Mekaoui, S. Wieman, T. Foujols, T. N. Woods, U. Sch\\\"uhle, V. Andretta, W. Schmutz","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-19T17:46:28Z","title":"On-Orbit Degradation of Solar Instruments"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5488","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":"sha256:563a7371504d6aa5b2ad71fb52ad51f859072e618e02b6bc76e42fa20f22562a","target":"record","created_at":"2026-05-18T03:27:33Z","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":"9f89ea527b05842c7c6bb85724a3cdd31e2f87d0f8e2332aad52caa9e0a0a58f","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2013-04-19T17:46:28Z","title_canon_sha256":"1eba068e13118ff4466a78b08c2b9a00a4ad559c85b79ecc95e02b42e1fcb982"},"schema_version":"1.0","source":{"id":"1304.5488","kind":"arxiv","version":1}},"canonical_sha256":"3bea001b36f05bbfc544fe87d87d7bce05e9d4fe1fdc0fb455954c0b81ecfe99","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3bea001b36f05bbfc544fe87d87d7bce05e9d4fe1fdc0fb455954c0b81ecfe99","first_computed_at":"2026-05-18T03:27:33.376764Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:27:33.376764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OC1glKIMg7nIN5MipWYgLEo0DuFQjzjoK3NEjW3quyoIA4K1sfhtFdZlxIwh7Xb3SDUcPkqhHAOGTTve2pD9Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:27:33.377247Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.5488","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:563a7371504d6aa5b2ad71fb52ad51f859072e618e02b6bc76e42fa20f22562a","sha256:20b0f8140033dd5f4885e2ca24b9f3d43473c730d65c2f5ff344a07baf76bf28"],"state_sha256":"d82eac1a895d25f1df73a6ed57076830cd27284307674f6c9a128ce688b2d100"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cXiMsF9LlsuCeZLfg2/TfDeFJkiHn1i+h2X71cgUZI4plnVUIoNivwDf+qG9alx2qkb7fZBR5iv4CSgy46CaCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T22:15:41.392908Z","bundle_sha256":"33d379b7103f83b03d117ed3c0df1476943120a1c0af9e192ccf585200f3b90e"}}