public bool VerifyBlockHeight(Block block)
{
var last = _blockChainService.LookUpBlockInfo(block.Body.LastBlockId);
if (last != null)
{
return(block.Body.Height == last.Height + 1);
}
return(false);
}
public BigInteger TargetForBlock(BlockInfo info)
{
var backStartFromBlock = (info.Height - (info.Height % Configurations.MA_SIZE_FOR_TARGET));
var maSize = Configurations.MA_SIZE_FOR_TARGET;
if (backStartFromBlock <= Configurations.MA_SIZE_FOR_TARGET)
{
var genesis = _blockChainService.LookUpBlockInfo(Configurations.GENESIS_BLOCK_ID);
return(BigIntegerFromBase64(genesis.Target));
}
var startBlock = _blockChainService.LookUpBlockInfoByHeight(backStartFromBlock);
var lastTime = startBlock.CreationTime;
var allSeconds = 0d;
var avged = 0;
for (int difS = 1; difS < maSize; difS++)
{
var blockInfo = _blockChainService.LookUpBlockInfoByHeight(backStartFromBlock - difS);
var seconds = (lastTime - blockInfo.CreationTime).TotalSeconds;
if (seconds < Configurations.MAX_SECONDS_FOR_TARGET_AVERAGE)
{
allSeconds += seconds;
avged++;
}
}
var avgSeconds = allSeconds / avged;
var newTarget = BigIntegerFromBase64(startBlock.Target) * (int)avgSeconds;
newTarget = newTarget / Configurations.TARGET_SECONDS;
return(newTarget);
}