{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ZHUJB5NLZBN5X27SXWIKTYRSKF","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":"120a72242e900075efb1dbee50dec47e2fd31e9d60a1459eef9f94dafa1ea608","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-04-28T14:34:06Z","title_canon_sha256":"75a859141777b595b3ca9fd4ae525c00966343519f7c99a81f4eef1b941e04aa"},"schema_version":"1.0","source":{"id":"0904.4353","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.4353","created_at":"2026-05-18T02:13:56Z"},{"alias_kind":"arxiv_version","alias_value":"0904.4353v1","created_at":"2026-05-18T02:13:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4353","created_at":"2026-05-18T02:13:56Z"},{"alias_kind":"pith_short_12","alias_value":"ZHUJB5NLZBN5","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"ZHUJB5NLZBN5X27S","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"ZHUJB5NL","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:211871019c8028b372045e93d9787dd80e40f53f2614665d7196361ca962eaa4","target":"graph","created_at":"2026-05-18T02:13:56Z","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":"In the solar atmosphere the twist parameter $\\alpha$ has the same sign as magnetic helicity. It has been observed using photospheric vector magnetograms that negative/positive helicity is dominant in the northern/southern hemisphere of the Sun. Chromospheric features show dextral/sinistral dominance in the northern/southern hemisphere and sigmoids observed in X-rays also have a dominant sense of reverse-S/forward-S in the northern/southern hemisphere. It is of interest whether individual features have one-to-one correspondence in terms of helicity at different atmospheric heights. We use UBF \\","authors_text":"K. Sankarasubramanian, P. Venkatakrishnan, S. K. Tiwari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-04-28T14:34:06Z","title":"Helicity at Photospheric and Chromospheric Heights"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4353","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":"sha256:5924b8cf4cc848f685ce37fc9382969cdd02077e4f1e08d98f392c86afb9d878","target":"record","created_at":"2026-05-18T02:13:56Z","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":"120a72242e900075efb1dbee50dec47e2fd31e9d60a1459eef9f94dafa1ea608","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-04-28T14:34:06Z","title_canon_sha256":"75a859141777b595b3ca9fd4ae525c00966343519f7c99a81f4eef1b941e04aa"},"schema_version":"1.0","source":{"id":"0904.4353","kind":"arxiv","version":1}},"canonical_sha256":"c9e890f5abc85bdbebf2bd90a9e2325155bfc12dfc98548df7ff09d05440ec2a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c9e890f5abc85bdbebf2bd90a9e2325155bfc12dfc98548df7ff09d05440ec2a","first_computed_at":"2026-05-18T02:13:56.706409Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:56.706409Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vsIPboMaVHc50RLad8tgZfiVWtBJ/gd5ZotxPu7kgIwr8phDO7CMSpeiz3tzfx/TIovIR5VV8zMxp5lp/CmoBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:56.707177Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.4353","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5924b8cf4cc848f685ce37fc9382969cdd02077e4f1e08d98f392c86afb9d878","sha256:211871019c8028b372045e93d9787dd80e40f53f2614665d7196361ca962eaa4"],"state_sha256":"621368e02cad866c5aceefe54cc53838a2ee159c1e8e5223b15e4b66a84e0ca4"}