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feat(state): stitch tree_aux root serving across the vct upgrade height #259

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feat(state): stitch tree_aux root serving across the vct upgrade height #259

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10 changes: 6 additions & 4 deletions zebra-state/src/service.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1554,10 +1554,12 @@ impl Service<ReadRequest> for ReadStateService {
start_height,
count,
} => {
// Serve stitched committed verified roots first, then provisional
// header-ahead roots for heights that have headers but no committed
// body yet. Committed roots win for overlapping heights because
// they have already been verified during block commit.
// Serve stitched committed verified roots first, then provisional header-ahead
// roots for heights that have headers but no committed body yet. Committed roots
// come from the compact `commitment_roots_by_height` index, with
// `serve_block_roots` filling pre-upgrade gaps from per-height trees when needed.
// They win for overlapping heights because they have already been verified during
// block commit.
let roots = if count == 0 {
Vec::new()
} else if let Some((tip, _hash)) = state.db.best_header_tip() {
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