private Block()
{
this.index = 1;
this.timestamp = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
this.proof = new ProofOfWork(1);
this.previousHash = Sha256Hash.Of("Genesis");
this.transactions = new List <Transaction>();
}
public virtual bool Verify(ProofOfWork lastProof)
{
if (lastProof == null)
{
throw new InvalidOperationException("Last proof must not be null");
}
return(Sha256Hash
.Of($"{lastProof.Value}{Value}")
.StartsWith("0000"));
}
public Sha256Hash Hash()
{
var properties = new {
Index,
Timestamp,
Proof,
PreviousHash,
Transactions
};
return(Sha256Hash.Of(properties.AsJson()));
}
public bool IsGenesisBlock()
{
return(Index == 1 &&
PreviousHash == Sha256Hash.Of("Genesis") &&
Proof == new ProofOfWork(1));
}