{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:W5EW5ANCJPGK6PHVMGQP2CKUIC","short_pith_number":"pith:W5EW5ANC","canonical_record":{"source":{"id":"1308.2639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-12T18:13:38Z","cross_cats_sorted":[],"title_canon_sha256":"12430742d7697112ce1a7bb30ef49f24eb794ce689cf37666ac182450a79abda","abstract_canon_sha256":"fcb4edf7b92198c0b6d77ee3996fbbed23db9b007353416e02549043968127f4"},"schema_version":"1.0"},"canonical_sha256":"b7496e81a24bccaf3cf561a0fd0954409ef2eed15a20595da0104af04d8723b7","source":{"kind":"arxiv","id":"1308.2639","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2639","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2639v1","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2639","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"W5EW5ANCJPGK","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"W5EW5ANCJPGK6PHV","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"W5EW5ANC","created_at":"2026-05-18T12:28:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:W5EW5ANCJPGK6PHVMGQP2CKUIC","target":"record","payload":{"canonical_record":{"source":{"id":"1308.2639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-12T18:13:38Z","cross_cats_sorted":[],"title_canon_sha256":"12430742d7697112ce1a7bb30ef49f24eb794ce689cf37666ac182450a79abda","abstract_canon_sha256":"fcb4edf7b92198c0b6d77ee3996fbbed23db9b007353416e02549043968127f4"},"schema_version":"1.0"},"canonical_sha256":"b7496e81a24bccaf3cf561a0fd0954409ef2eed15a20595da0104af04d8723b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:16.254220Z","signature_b64":"wReCqcIyVIgDEB1en/0yqA0x379GjLIAGKn7B1o731am9SxqqcbM/Mwx4cKoOC8mFZjtdHY0FEzD/gGDB/2eDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7496e81a24bccaf3cf561a0fd0954409ef2eed15a20595da0104af04d8723b7","last_reissued_at":"2026-05-18T01:48:16.253775Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:16.253775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.2639","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":"2026-05-18T01:48:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mDNWTKl56h/01L6tJDgOyMUQF3Oxy8guJtdzEZK264oNkgymzDnPFv9VTuSdfrGUmgDsmEQvs/oB7HkbsyMJDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:39:22.209384Z"},"content_sha256":"167f3157686c1534d1bfb3d9ae892b9088a4f7f7e43bb0827a7486492b79022d","schema_version":"1.0","event_id":"sha256:167f3157686c1534d1bfb3d9ae892b9088a4f7f7e43bb0827a7486492b79022d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:W5EW5ANCJPGK6PHVMGQP2CKUIC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Study of Rapid Formation of a Delta Sunspot Associated with the 2012 July 2 C7.4 Flare Using High-resolution Observations of New Solar Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Chang Liu, Haimin Wang, Ju Jing, Na Deng, Shuo Wang, Wenda Cao, Yan Xu","submitted_at":"2013-08-12T18:13:38Z","abstract_excerpt":"Rapid, irreversible changes of magnetic topology and sunspot structure associated with flares have been systematically observed in recent years. The most striking features include the increase of horizontal field at the polarity inversion line (PIL) and the co-spatial penumbral darkening. A likely explanation of the above phenomenon is the back reaction to the coronal restructuring after eruptions: a coronal mass ejection carries the upward momentum while the downward momentum compresses the field lines near the PIL. Previous studies could only use low resolution (above 1\") magnetograms and wh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2639","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":"2026-05-18T01:48:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5thrmJ5Ii+xBwOFEt2pkBNdjJ0EmKBjeaDjo/HcSINOyT2ntZsnFOYBI+qz6j10MxA0xOuxRfI8gBQ/4YTnECA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:39:22.210099Z"},"content_sha256":"3d05148e53ab9757edbf8cfccab0fc9f2584d5e02150feef9178f2a1c25f6b3e","schema_version":"1.0","event_id":"sha256:3d05148e53ab9757edbf8cfccab0fc9f2584d5e02150feef9178f2a1c25f6b3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC/bundle.json","state_url":"https://pith.science/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC/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":"2026-05-27T00:39:22Z","links":{"resolver":"https://pith.science/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC","bundle":"https://pith.science/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC/bundle.json","state":"https://pith.science/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W5EW5ANCJPGK6PHVMGQP2CKUIC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:W5EW5ANCJPGK6PHVMGQP2CKUIC","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":"fcb4edf7b92198c0b6d77ee3996fbbed23db9b007353416e02549043968127f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-12T18:13:38Z","title_canon_sha256":"12430742d7697112ce1a7bb30ef49f24eb794ce689cf37666ac182450a79abda"},"schema_version":"1.0","source":{"id":"1308.2639","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.2639","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"arxiv_version","alias_value":"1308.2639v1","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.2639","created_at":"2026-05-18T01:48:16Z"},{"alias_kind":"pith_short_12","alias_value":"W5EW5ANCJPGK","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_16","alias_value":"W5EW5ANCJPGK6PHV","created_at":"2026-05-18T12:28:04Z"},{"alias_kind":"pith_short_8","alias_value":"W5EW5ANC","created_at":"2026-05-18T12:28:04Z"}],"graph_snapshots":[{"event_id":"sha256:3d05148e53ab9757edbf8cfccab0fc9f2584d5e02150feef9178f2a1c25f6b3e","target":"graph","created_at":"2026-05-18T01:48:16Z","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":"Rapid, irreversible changes of magnetic topology and sunspot structure associated with flares have been systematically observed in recent years. The most striking features include the increase of horizontal field at the polarity inversion line (PIL) and the co-spatial penumbral darkening. A likely explanation of the above phenomenon is the back reaction to the coronal restructuring after eruptions: a coronal mass ejection carries the upward momentum while the downward momentum compresses the field lines near the PIL. Previous studies could only use low resolution (above 1\") magnetograms and wh","authors_text":"Chang Liu, Haimin Wang, Ju Jing, Na Deng, Shuo Wang, Wenda Cao, Yan Xu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-12T18:13:38Z","title":"Study of Rapid Formation of a Delta Sunspot Associated with the 2012 July 2 C7.4 Flare Using High-resolution Observations of New Solar Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.2639","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":"sha256:167f3157686c1534d1bfb3d9ae892b9088a4f7f7e43bb0827a7486492b79022d","target":"record","created_at":"2026-05-18T01:48:16Z","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":"fcb4edf7b92198c0b6d77ee3996fbbed23db9b007353416e02549043968127f4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-08-12T18:13:38Z","title_canon_sha256":"12430742d7697112ce1a7bb30ef49f24eb794ce689cf37666ac182450a79abda"},"schema_version":"1.0","source":{"id":"1308.2639","kind":"arxiv","version":1}},"canonical_sha256":"b7496e81a24bccaf3cf561a0fd0954409ef2eed15a20595da0104af04d8723b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7496e81a24bccaf3cf561a0fd0954409ef2eed15a20595da0104af04d8723b7","first_computed_at":"2026-05-18T01:48:16.253775Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:16.253775Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wReCqcIyVIgDEB1en/0yqA0x379GjLIAGKn7B1o731am9SxqqcbM/Mwx4cKoOC8mFZjtdHY0FEzD/gGDB/2eDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:16.254220Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.2639","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:167f3157686c1534d1bfb3d9ae892b9088a4f7f7e43bb0827a7486492b79022d","sha256:3d05148e53ab9757edbf8cfccab0fc9f2584d5e02150feef9178f2a1c25f6b3e"],"state_sha256":"6b658e4a41468596692f79f247dd1ccc48774c84255d1c530801eface26b5fc0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZL9eeRxdaAe+9zafi33OJS2C3zT1ffbVsC8e/6sJlPkkwLFm5jWyrhAGWL30YuhdbBF0EUSUNi6+FiYs5Q2KDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T00:39:22.213720Z","bundle_sha256":"0797657c0bae6ff5146fecfd7a639b4c10d5e3b46c28df4e243d35c75e1b315a"}}