public BlockchainServices()
{
// generate initial blockchain with genesis block
blockchain = new Blockchain();
// calculate hash of genesis block
Block genesisBlock = blockchain.Chain[0];
BlockServices blockServices = new BlockServices(genesisBlock);
string genesisBlockHash = blockServices.BlockHash();
blockchain.Chain[0].Hash = genesisBlockHash;
}
public Block MineBlock(string miningRewardAddress)
{
// add mining reward transaction to block
Transaction trans = new Transaction("SYSTEM", miningRewardAddress, blockchain.MiningReward, "Mining reward");
blockchain.PendingTransactions.Add(trans);
Block block = new Block(DateTime.Now, blockchain.PendingTransactions, LatestBlock().Hash);
var blockServices = new BlockServices(block);
blockServices.MineBlock(blockchain.Difficulty);
blockchain.Chain.Add(block);
//clear pending transactions (all pending transactions are in a block
blockchain.PendingTransactions = new List <Transaction>();
return(block);
}
public bool isBlockchainValid()
{
for (long i = 1; i < blockchain.Chain.LongCount(); i++)
{
Block currentBlock = blockchain.Chain[(int)i];
Block previousBlock = blockchain.Chain[(int)i - 1];
BlockServices blockServices = new BlockServices(currentBlock);
if (currentBlock.Hash != blockServices.BlockHash())
{
return(false);
}
if (currentBlock.PreviousHash != previousBlock.Hash)
{
return(false);
}
blockServices = null;
}
return(true);
}
