Function lightning_block_sync::init::validate_best_block_header

pub async fn validate_best_block_header<B: Deref>(
    block_source: B
) -> BlockSourceResult<ValidatedBlockHeader>where
    B::Target: BlockSource,

Returns a validated block header of the source’s best chain tip.

Upon success, the returned header can be used to initialize SpvClient. Useful during a fresh start when there are no chain listeners to sync yet.