{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:5G3L2GNNCDTDTFUMLVMZJM7RAO","short_pith_number":"pith:5G3L2GNN","canonical_record":{"source":{"id":"1609.08558","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-27T18:04:39Z","cross_cats_sorted":["astro-ph.HE","astro-ph.SR","physics.ins-det","physics.space-ph"],"title_canon_sha256":"1b481baaf179964cd83d485166d397037e8f47aa8c0fccb13a95bdad2086324b","abstract_canon_sha256":"87dfc5db3338b6d561c0ab1c877522c9cca364a1b48858e3e43baf9d377fa662"},"schema_version":"1.0"},"canonical_sha256":"e9b6bd19ad10e639968c5d5994b3f103849fd2e51e9761b8ee8337a9c73ff652","source":{"kind":"arxiv","id":"1609.08558","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.08558","created_at":"2026-05-18T01:03:45Z"},{"alias_kind":"arxiv_version","alias_value":"1609.08558v1","created_at":"2026-05-18T01:03:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.08558","created_at":"2026-05-18T01:03:45Z"},{"alias_kind":"pith_short_12","alias_value":"5G3L2GNNCDTD","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5G3L2GNNCDTDTFUM","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5G3L2GNN","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:5G3L2GNNCDTDTFUMLVMZJM7RAO","target":"record","payload":{"canonical_record":{"source":{"id":"1609.08558","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-27T18:04:39Z","cross_cats_sorted":["astro-ph.HE","astro-ph.SR","physics.ins-det","physics.space-ph"],"title_canon_sha256":"1b481baaf179964cd83d485166d397037e8f47aa8c0fccb13a95bdad2086324b","abstract_canon_sha256":"87dfc5db3338b6d561c0ab1c877522c9cca364a1b48858e3e43baf9d377fa662"},"schema_version":"1.0"},"canonical_sha256":"e9b6bd19ad10e639968c5d5994b3f103849fd2e51e9761b8ee8337a9c73ff652","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:03:45.640508Z","signature_b64":"hV0qG9UuaKv934lXIZ7mtcNQ+5+GmvHg15JvfOBsqkylR1YIjcvrlZMJpHRH9fKfIw5UqWa44GaTQtKdXnokAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9b6bd19ad10e639968c5d5994b3f103849fd2e51e9761b8ee8337a9c73ff652","last_reissued_at":"2026-05-18T01:03:45.640112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:03:45.640112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.08558","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":"2026-05-18T01:03:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M6RKPXsg3AWUED6xduvdSLjF0o3SuLtvT/wpvQS2D4P9G8cPU2GMcd3/ptSTM8PRMNISpoowb9SEmz8cSAP+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:15:44.699784Z"},"content_sha256":"260a2ee2cb0d2345966e47371d760adbf84317ba32f79063b9fc716943fda156","schema_version":"1.0","event_id":"sha256:260a2ee2cb0d2345966e47371d760adbf84317ba32f79063b9fc716943fda156"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:5G3L2GNNCDTDTFUMLVMZJM7RAO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","astro-ph.SR","physics.ins-det","physics.space-ph"],"primary_cat":"astro-ph.IM","authors_text":"A. Caspi, A. Y. Shih, A. Zoglauer, B. A. Maruca, B. A. Mochizuki, D. M. Smith, G. J. Hurford, H. M. Bain, J. Hoberman, J. Olson, J. Sample, M. Amman, N. A. Kelley, Nicole Duncan, N. M. Godbole, P. Kaufmann, P. Saint-Hilaire, R. P. Lin, S. Boggs","submitted_at":"2016-09-27T18:04:39Z","abstract_excerpt":"The Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results.\n  Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV) with enhanced imaging, spectroscopy and polarimetry. GRIPS is specifically designed to answer questions including: What causes the s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.08558","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":"2026-05-18T01:03:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MiQorQAIwFOsdExTSzWFI/T3zpSchh0pAQcKVnO5t14WDEr1IFHuTXe1y74lHIGwR1MTrrtgGkRccxAdmhHkCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:15:44.700458Z"},"content_sha256":"5001cdbffd8ede5b32445bebd6deeb2ba63fad338350e27b5a5a19e8a67f6454","schema_version":"1.0","event_id":"sha256:5001cdbffd8ede5b32445bebd6deeb2ba63fad338350e27b5a5a19e8a67f6454"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO/bundle.json","state_url":"https://pith.science/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO/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":"2026-06-09T10:15:44Z","links":{"resolver":"https://pith.science/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO","bundle":"https://pith.science/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO/bundle.json","state":"https://pith.science/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5G3L2GNNCDTDTFUMLVMZJM7RAO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5G3L2GNNCDTDTFUMLVMZJM7RAO","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":"87dfc5db3338b6d561c0ab1c877522c9cca364a1b48858e3e43baf9d377fa662","cross_cats_sorted":["astro-ph.HE","astro-ph.SR","physics.ins-det","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-27T18:04:39Z","title_canon_sha256":"1b481baaf179964cd83d485166d397037e8f47aa8c0fccb13a95bdad2086324b"},"schema_version":"1.0","source":{"id":"1609.08558","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.08558","created_at":"2026-05-18T01:03:45Z"},{"alias_kind":"arxiv_version","alias_value":"1609.08558v1","created_at":"2026-05-18T01:03:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.08558","created_at":"2026-05-18T01:03:45Z"},{"alias_kind":"pith_short_12","alias_value":"5G3L2GNNCDTD","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5G3L2GNNCDTDTFUM","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5G3L2GNN","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:5001cdbffd8ede5b32445bebd6deeb2ba63fad338350e27b5a5a19e8a67f6454","target":"graph","created_at":"2026-05-18T01:03:45Z","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 Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) is a balloon-borne telescope designed to study solar-flare particle acceleration and transport. We describe GRIPS's first Antarctic long-duration flight in Jan 2016 and report preliminary calibration and science results.\n  Electron and ion dynamics, particle abundances and the ambient plasma conditions in solar flares can be understood by examining hard X-ray (HXR) and gamma-ray emission (20 keV to 10 MeV) with enhanced imaging, spectroscopy and polarimetry. GRIPS is specifically designed to answer questions including: What causes the s","authors_text":"A. Caspi, A. Y. Shih, A. Zoglauer, B. A. Maruca, B. A. Mochizuki, D. M. Smith, G. J. Hurford, H. M. Bain, J. Hoberman, J. Olson, J. Sample, M. Amman, N. A. Kelley, Nicole Duncan, N. M. Godbole, P. Kaufmann, P. Saint-Hilaire, R. P. Lin, S. Boggs","cross_cats":["astro-ph.HE","astro-ph.SR","physics.ins-det","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-27T18:04:39Z","title":"First flight of the Gamma-Ray Imager/Polarimeter for Solar flares (GRIPS) instrument"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.08558","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":"sha256:260a2ee2cb0d2345966e47371d760adbf84317ba32f79063b9fc716943fda156","target":"record","created_at":"2026-05-18T01:03:45Z","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":"87dfc5db3338b6d561c0ab1c877522c9cca364a1b48858e3e43baf9d377fa662","cross_cats_sorted":["astro-ph.HE","astro-ph.SR","physics.ins-det","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-09-27T18:04:39Z","title_canon_sha256":"1b481baaf179964cd83d485166d397037e8f47aa8c0fccb13a95bdad2086324b"},"schema_version":"1.0","source":{"id":"1609.08558","kind":"arxiv","version":1}},"canonical_sha256":"e9b6bd19ad10e639968c5d5994b3f103849fd2e51e9761b8ee8337a9c73ff652","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9b6bd19ad10e639968c5d5994b3f103849fd2e51e9761b8ee8337a9c73ff652","first_computed_at":"2026-05-18T01:03:45.640112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:45.640112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hV0qG9UuaKv934lXIZ7mtcNQ+5+GmvHg15JvfOBsqkylR1YIjcvrlZMJpHRH9fKfIw5UqWa44GaTQtKdXnokAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:45.640508Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.08558","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:260a2ee2cb0d2345966e47371d760adbf84317ba32f79063b9fc716943fda156","sha256:5001cdbffd8ede5b32445bebd6deeb2ba63fad338350e27b5a5a19e8a67f6454"],"state_sha256":"9d9f5f76ee2b0ca06884933779bb785d76b28d389760cbf460db5a86bdadbd66"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b4GgU4Y/Kly0Hl6YzkP1337O13COWJofKiEUnGhe8j+KDHKdpbv67ZBWj43IQH56k0S5wWI5NFcW4fRNhuqDAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T10:15:44.704719Z","bundle_sha256":"08f4e9f5817e3cacb52ff035481f52fa4c907b61e38e17ec764e2f949ecf9fdd"}}