{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WMUVMGWZE5NEX7Z7NONUH3DLOD","short_pith_number":"pith:WMUVMGWZ","canonical_record":{"source":{"id":"1412.8676","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-30T16:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"76fcf4b422354acf0cd9f3226c4f8a36056f43c4aa641bab11ced62dc126d5d0","abstract_canon_sha256":"cf3081d50ed70ddb91ad3255a44d206dcdd7d60501b325441eaeff52a645bb18"},"schema_version":"1.0"},"canonical_sha256":"b329561ad9275a4bff3f6b9b43ec6b70d2557450a8a4a98e2186a7c2f7bab818","source":{"kind":"arxiv","id":"1412.8676","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8676","created_at":"2026-05-18T01:41:15Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8676v1","created_at":"2026-05-18T01:41:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8676","created_at":"2026-05-18T01:41:15Z"},{"alias_kind":"pith_short_12","alias_value":"WMUVMGWZE5NE","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WMUVMGWZE5NEX7Z7","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WMUVMGWZ","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WMUVMGWZE5NEX7Z7NONUH3DLOD","target":"record","payload":{"canonical_record":{"source":{"id":"1412.8676","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-30T16:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"76fcf4b422354acf0cd9f3226c4f8a36056f43c4aa641bab11ced62dc126d5d0","abstract_canon_sha256":"cf3081d50ed70ddb91ad3255a44d206dcdd7d60501b325441eaeff52a645bb18"},"schema_version":"1.0"},"canonical_sha256":"b329561ad9275a4bff3f6b9b43ec6b70d2557450a8a4a98e2186a7c2f7bab818","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:15.187376Z","signature_b64":"6KSPnLtjc+qdb5djmt5i30jEy5S47U9kSHwdxtI8KCuk8lGLIVo++qyfS8YmTaWVMpZkASMZODAIS0DFxYfxAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b329561ad9275a4bff3f6b9b43ec6b70d2557450a8a4a98e2186a7c2f7bab818","last_reissued_at":"2026-05-18T01:41:15.186650Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:15.186650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1412.8676","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":"2026-05-18T01:41:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S+wMuzigd+6WaLC79U1YweG8qZ/MgYvsgrAnSLVM0d/FYT2at71usrwbg8/hH8CsUAz3r6fer9pth1Dst3WwAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:10:15.524215Z"},"content_sha256":"c332e7d37d56461434d71f3aec83441999f0c3a9a48d1036b9d977c2adf9274e","schema_version":"1.0","event_id":"sha256:c332e7d37d56461434d71f3aec83441999f0c3a9a48d1036b9d977c2adf9274e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WMUVMGWZE5NEX7Z7NONUH3DLOD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Structure and Evolution of Magnetic Fields Associated with Solar Eruptions (Invited Review)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Chang Liu, Haimin Wang","submitted_at":"2014-12-30T16:39:00Z","abstract_excerpt":"This paper reviews the studies of solar photospheric magnetic field evolution in active regions and its relationship to solar flares. It is divided into two topics, the magnetic structure and evolution leading to solar eruptions and the rapid changes of photospheric magnetic field associated with eruptions. For the first topic, we describe the magnetic complexity, new flux emergence, flux cancellation, shear motions, sunspot rotation, and magnetic helicity injection, which may all contribute to the storage and buildup of energy and triggering of solar eruptions. For the second topic, we concen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8676","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":"2026-05-18T01:41:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/KBnFL4j43amKYNrcb2RTsN4Jvc3zMKGersqRbafgqgMYSoVI7I/zhWpWTvky9C9yI30q3N690NrnXD8JrwKCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T16:10:15.524622Z"},"content_sha256":"f971380f11b0623975f8aa129f22f0ab8c21b8b51fbe7bf1cb3177097131aa9a","schema_version":"1.0","event_id":"sha256:f971380f11b0623975f8aa129f22f0ab8c21b8b51fbe7bf1cb3177097131aa9a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD/bundle.json","state_url":"https://pith.science/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD/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":"2026-05-25T16:10:15Z","links":{"resolver":"https://pith.science/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD","bundle":"https://pith.science/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD/bundle.json","state":"https://pith.science/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WMUVMGWZE5NEX7Z7NONUH3DLOD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WMUVMGWZE5NEX7Z7NONUH3DLOD","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":"cf3081d50ed70ddb91ad3255a44d206dcdd7d60501b325441eaeff52a645bb18","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-30T16:39:00Z","title_canon_sha256":"76fcf4b422354acf0cd9f3226c4f8a36056f43c4aa641bab11ced62dc126d5d0"},"schema_version":"1.0","source":{"id":"1412.8676","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1412.8676","created_at":"2026-05-18T01:41:15Z"},{"alias_kind":"arxiv_version","alias_value":"1412.8676v1","created_at":"2026-05-18T01:41:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1412.8676","created_at":"2026-05-18T01:41:15Z"},{"alias_kind":"pith_short_12","alias_value":"WMUVMGWZE5NE","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WMUVMGWZE5NEX7Z7","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WMUVMGWZ","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:f971380f11b0623975f8aa129f22f0ab8c21b8b51fbe7bf1cb3177097131aa9a","target":"graph","created_at":"2026-05-18T01:41:15Z","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":"This paper reviews the studies of solar photospheric magnetic field evolution in active regions and its relationship to solar flares. It is divided into two topics, the magnetic structure and evolution leading to solar eruptions and the rapid changes of photospheric magnetic field associated with eruptions. For the first topic, we describe the magnetic complexity, new flux emergence, flux cancellation, shear motions, sunspot rotation, and magnetic helicity injection, which may all contribute to the storage and buildup of energy and triggering of solar eruptions. For the second topic, we concen","authors_text":"Chang Liu, Haimin Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-30T16:39:00Z","title":"Structure and Evolution of Magnetic Fields Associated with Solar Eruptions (Invited Review)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.8676","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:c332e7d37d56461434d71f3aec83441999f0c3a9a48d1036b9d977c2adf9274e","target":"record","created_at":"2026-05-18T01:41:15Z","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":"cf3081d50ed70ddb91ad3255a44d206dcdd7d60501b325441eaeff52a645bb18","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-12-30T16:39:00Z","title_canon_sha256":"76fcf4b422354acf0cd9f3226c4f8a36056f43c4aa641bab11ced62dc126d5d0"},"schema_version":"1.0","source":{"id":"1412.8676","kind":"arxiv","version":1}},"canonical_sha256":"b329561ad9275a4bff3f6b9b43ec6b70d2557450a8a4a98e2186a7c2f7bab818","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b329561ad9275a4bff3f6b9b43ec6b70d2557450a8a4a98e2186a7c2f7bab818","first_computed_at":"2026-05-18T01:41:15.186650Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:15.186650Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6KSPnLtjc+qdb5djmt5i30jEy5S47U9kSHwdxtI8KCuk8lGLIVo++qyfS8YmTaWVMpZkASMZODAIS0DFxYfxAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:15.187376Z","signed_message":"canonical_sha256_bytes"},"source_id":"1412.8676","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c332e7d37d56461434d71f3aec83441999f0c3a9a48d1036b9d977c2adf9274e","sha256:f971380f11b0623975f8aa129f22f0ab8c21b8b51fbe7bf1cb3177097131aa9a"],"state_sha256":"a713a25da35df6b65d5a06260f6f77673994ba427683272e7c29b03cc315cacd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VVRXzHFPnlKXIwIyanyGXZA7htcU2TFl/Z4PmSEr7Kq3yr/eCP8yaekzxqdWp6k2THpe+ZLogkcaGQZafpCRAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T16:10:15.527803Z","bundle_sha256":"d57dfb2c98b1ae128b2c484c4f2dc94d171f78ff3b2be3c4c9ae2907fe170d3e"}}