{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PKKI7JAS4Y777JQN63OVI7GDNH","short_pith_number":"pith:PKKI7JAS","canonical_record":{"source":{"id":"1707.06198","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-19T17:06:45Z","cross_cats_sorted":[],"title_canon_sha256":"8ce813a7143fe42a1db83792365961629832647b1fea8afa4990710c6daa35e7","abstract_canon_sha256":"2a292d66e5398e1c4c6fe17a29915112b8c00af49bdafdcefc6894aa200be8e0"},"schema_version":"1.0"},"canonical_sha256":"7a948fa412e63fffa60df6dd547cc369cd884abab3d4e2cad713e6309e394cbf","source":{"kind":"arxiv","id":"1707.06198","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.06198","created_at":"2026-05-18T00:38:39Z"},{"alias_kind":"arxiv_version","alias_value":"1707.06198v1","created_at":"2026-05-18T00:38:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.06198","created_at":"2026-05-18T00:38:39Z"},{"alias_kind":"pith_short_12","alias_value":"PKKI7JAS4Y77","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PKKI7JAS4Y777JQN","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PKKI7JAS","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PKKI7JAS4Y777JQN63OVI7GDNH","target":"record","payload":{"canonical_record":{"source":{"id":"1707.06198","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-19T17:06:45Z","cross_cats_sorted":[],"title_canon_sha256":"8ce813a7143fe42a1db83792365961629832647b1fea8afa4990710c6daa35e7","abstract_canon_sha256":"2a292d66e5398e1c4c6fe17a29915112b8c00af49bdafdcefc6894aa200be8e0"},"schema_version":"1.0"},"canonical_sha256":"7a948fa412e63fffa60df6dd547cc369cd884abab3d4e2cad713e6309e394cbf","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:39.520240Z","signature_b64":"3XCpvcrOWg2PJcq0lm6nAyn0vad2aI1bp92shgtwPRfsUPkDZolPmPL6hySolR0oGcNeBjtGMn+kgXzSgxKjCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a948fa412e63fffa60df6dd547cc369cd884abab3d4e2cad713e6309e394cbf","last_reissued_at":"2026-05-18T00:38:39.519836Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:39.519836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.06198","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":"2026-05-18T00:38:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FsBEU+jW7ZH8/YSKINBsa4uD9t/aC24s8bcHxlTFy5CynVHQ60AdRxZEXvK171RN5HD48gnYVQCYdDgokKTGDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:59:50.446219Z"},"content_sha256":"758a97e182ff5c6a2674d4ca334952ef6ec33e1d00ba450396e22f40d9fff873","schema_version":"1.0","event_id":"sha256:758a97e182ff5c6a2674d4ca334952ef6ec33e1d00ba450396e22f40d9fff873"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PKKI7JAS4Y777JQN63OVI7GDNH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct Observation of Two-Step Magnetic Reconnection in a Solar Flare","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Aaron Hernandez-Perez, Astrid M. Veronig, Ewan Dickson, Rui Liu, Tingyu Gou","submitted_at":"2017-07-19T17:06:45Z","abstract_excerpt":"We report observations of an eruptive X2.8 flare on 2013 May 13, which shows two distinct episodes of energy release in the impulsive phase. The first episode is characterized by the eruption of a magnetic flux rope, similar to the energy-release process in most standard eruptive flares. While the second episode, which is stronger than the first normal one and shows enhanced high-energy X-ray and even $\\gamma$-ray emissions, is closely associated with magnetic reconnection of a large-scale loop in the aftermath of the eruption. The reconnection inflow of the loop leg is observed in the Solar D"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.06198","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":"2026-05-18T00:38:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cCJJgpuvmV4KMFCvcpDbYf8/UJ8ha6omvBTGgQXW75TivpMr8KYlncrN6Sh0HYKtkrbtqE/qFHSLl1wquG57Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:59:50.446790Z"},"content_sha256":"bd3ef93d93e6fcef0b612d536afaf9e5424aa3160db4017ce655c992e3cd9080","schema_version":"1.0","event_id":"sha256:bd3ef93d93e6fcef0b612d536afaf9e5424aa3160db4017ce655c992e3cd9080"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PKKI7JAS4Y777JQN63OVI7GDNH/bundle.json","state_url":"https://pith.science/pith/PKKI7JAS4Y777JQN63OVI7GDNH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PKKI7JAS4Y777JQN63OVI7GDNH/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":"2026-05-27T14:59:50Z","links":{"resolver":"https://pith.science/pith/PKKI7JAS4Y777JQN63OVI7GDNH","bundle":"https://pith.science/pith/PKKI7JAS4Y777JQN63OVI7GDNH/bundle.json","state":"https://pith.science/pith/PKKI7JAS4Y777JQN63OVI7GDNH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PKKI7JAS4Y777JQN63OVI7GDNH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PKKI7JAS4Y777JQN63OVI7GDNH","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":"2a292d66e5398e1c4c6fe17a29915112b8c00af49bdafdcefc6894aa200be8e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-19T17:06:45Z","title_canon_sha256":"8ce813a7143fe42a1db83792365961629832647b1fea8afa4990710c6daa35e7"},"schema_version":"1.0","source":{"id":"1707.06198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.06198","created_at":"2026-05-18T00:38:39Z"},{"alias_kind":"arxiv_version","alias_value":"1707.06198v1","created_at":"2026-05-18T00:38:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.06198","created_at":"2026-05-18T00:38:39Z"},{"alias_kind":"pith_short_12","alias_value":"PKKI7JAS4Y77","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PKKI7JAS4Y777JQN","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PKKI7JAS","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:bd3ef93d93e6fcef0b612d536afaf9e5424aa3160db4017ce655c992e3cd9080","target":"graph","created_at":"2026-05-18T00:38:39Z","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 report observations of an eruptive X2.8 flare on 2013 May 13, which shows two distinct episodes of energy release in the impulsive phase. The first episode is characterized by the eruption of a magnetic flux rope, similar to the energy-release process in most standard eruptive flares. While the second episode, which is stronger than the first normal one and shows enhanced high-energy X-ray and even $\\gamma$-ray emissions, is closely associated with magnetic reconnection of a large-scale loop in the aftermath of the eruption. The reconnection inflow of the loop leg is observed in the Solar D","authors_text":"Aaron Hernandez-Perez, Astrid M. Veronig, Ewan Dickson, Rui Liu, Tingyu Gou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-19T17:06:45Z","title":"Direct Observation of Two-Step Magnetic Reconnection in a Solar Flare"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.06198","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":"sha256:758a97e182ff5c6a2674d4ca334952ef6ec33e1d00ba450396e22f40d9fff873","target":"record","created_at":"2026-05-18T00:38:39Z","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":"2a292d66e5398e1c4c6fe17a29915112b8c00af49bdafdcefc6894aa200be8e0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-19T17:06:45Z","title_canon_sha256":"8ce813a7143fe42a1db83792365961629832647b1fea8afa4990710c6daa35e7"},"schema_version":"1.0","source":{"id":"1707.06198","kind":"arxiv","version":1}},"canonical_sha256":"7a948fa412e63fffa60df6dd547cc369cd884abab3d4e2cad713e6309e394cbf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a948fa412e63fffa60df6dd547cc369cd884abab3d4e2cad713e6309e394cbf","first_computed_at":"2026-05-18T00:38:39.519836Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:39.519836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3XCpvcrOWg2PJcq0lm6nAyn0vad2aI1bp92shgtwPRfsUPkDZolPmPL6hySolR0oGcNeBjtGMn+kgXzSgxKjCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:39.520240Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.06198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:758a97e182ff5c6a2674d4ca334952ef6ec33e1d00ba450396e22f40d9fff873","sha256:bd3ef93d93e6fcef0b612d536afaf9e5424aa3160db4017ce655c992e3cd9080"],"state_sha256":"283de12031e11afb8c5305ca64234264c24f926365eb3e3db25c5810a17e0f1d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1pL1MRvUKRpDoDlzOSfFxgxRJqdcoOjaoNBkDy3ZEK/WF688nlZkDtyNT3FbNpBE8JHZQ1A0DyOzFZx3sP1uCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:59:50.450175Z","bundle_sha256":"bc81d622c5683a5d75ce5a28de37e462c60da2c4303a70230b0e30ce86915056"}}