public BlockDigest?GetBlockDigest(HashDigest <SHA256> blockHash)
{
if (_blockCache.TryGetValue(blockHash, out BlockDigest cachedDigest))
{
return(cachedDigest);
}
var blockDigest = _store.GetBlockDigest(blockHash);
if (!(blockDigest is null))
{
_blockCache.AddOrUpdate(blockHash, blockDigest.Value);
}
return(blockDigest);
}