public Wallet(NetworkParameters @params)
{
_params = @params;
Keychain = new List<EcKey>();
Unspent = new Dictionary<Sha256Hash, Transaction>();
Spent = new Dictionary<Sha256Hash, Transaction>();
_inactive = new Dictionary<Sha256Hash, Transaction>();
Pending = new Dictionary<Sha256Hash, Transaction>();
_dead = new Dictionary<Sha256Hash, Transaction>();
}