public bool IsBlockchainValid(IList <BlockGeneric> blockchain)
{
for (int i = 1; i < blockchain.Count; i++)
{
BlockGeneric currentBlock = blockchain[i];
BlockGeneric previousBlock = blockchain[i - 1];
if (currentBlock.Hash != _hash.HashBlock(currentBlock))
{
Console.WriteLine($"The hash of the block is invalid at height {i}");
return(false);
}
if (currentBlock.PreviousHash != previousBlock.Hash)
{
Console.WriteLine($"The previous hash of the block is invalid at height {i-1}");
return(false);
}
}
return(true);
}
public string HashBlock(BlockGeneric block)
{
return(CalculateHash($"{block.UnixTimeStamp}-{block.PreviousHash ?? ""}-{block.HashedTransactionIds}"));
}
public bool IsBlockValid(BlockGeneric prevBlock, BlockGeneric newBlock)
{
return(newBlock.PreviousHash == prevBlock.Hash);
}
