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Spectral synthesis of the Ca II 8542 Å line yields intensity profiles with < 2 % mean residuals relative to the full 3D solution.","weakest_assumption":"That a GNN trained on populations from a single Bifrost simulation snapshot will generalize accurately to other atmospheric conditions, and that the directed graph discretization with distance-based edges fully captures the essential radiative couplings without missing key non-local effects."}},"verdict_id":"29317321-505c-48c9-a1fd-fce8663e8c6e"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1c4dd2208c6f0db14f0e1a7eb376f25a873a5d4524cdc01be68b831619b25343","target":"record","created_at":"2026-06-19T16:10:38Z","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":"927a4f6861b41e9673de7a1d455d53247bdf6557188cc4a7b1a2387be78e8dfe","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2026-05-10T13:55:18Z","title_canon_sha256":"8b688a3e726f1c96c408257a2c33f09d7f00cb8eaa557a7b8f7427fbda84d1c4"},"schema_version":"1.0","source":{"id":"2605.09543","kind":"arxiv","version":1}},"canonical_sha256":"699cdafa769615df2318e3794d555514a2ba835e633875c2e07652ceb5889d57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"699cdafa769615df2318e3794d555514a2ba835e633875c2e07652ceb5889d57","first_computed_at":"2026-06-19T16:10:38.723618Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:10:38.723618Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5ta0hUUjMhBrmwzK1eviKXAIX4/kaIuxvJg623yLtMFF28Qlw+ZkecM0Sj7+DSsWPehBNO7P9Cq1CirIyX+rAg==","signature_status":"signed_v1","signed_at":"2026-06-19T16:10:38.723970Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.09543","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1c4dd2208c6f0db14f0e1a7eb376f25a873a5d4524cdc01be68b831619b25343","sha256:866390227b43fb380c9fdf23996488a840f33ea9022bb942a4b955ca533e0621"],"state_sha256":"c1ea9191706fc135730aab4407685c038d9a1fa6ce4a79632fbd14afcc294f2f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AH5OyrQTi6VWqZHx+CrGXOGdKn2eSSJH0ykJbtNrCn1HtTPo0tmRgJSV7cZnXPxnexijZ8mHh7nsCUwJb/kXDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T14:57:15.242813Z","bundle_sha256":"0b8b2048792a7c7cc624877be223395eaee197f27470aa12291d926e1f103072"}}