block

type Block struct {
	//hash of the provious block
	PreHash      []byte
	Transactions []Transaction
	TimeStamp    int64
	Height       int
	//hash of this block
	Hash []byte
	//for verification
	Agent agent.Agent
	//recording wins or loses for mining fights
	Proof []bool
	//how many kills this block includes
	Kill uint64
}

type Sender interface {
	SendVersionToPeers(height int, kill uint64)
	SendTransToPeers(tss []Transaction)
}

type TXInput struct {
	TxHash    []byte
	Index     int
	Signature []byte
	PublicKey []byte
}

type TXOutput struct {
	Value         int
	PublicKeyHash []byte
}

type Transaction struct {
	TxHash []byte
	Vint   []TXInput
	Vout   []TXOutput
	Agent  agent.Agent
}

type UTXO struct {
	Hash  []byte
	Index int
	Vout  TXOutput
}

type UTXOHandle struct {
	BC *blockchain
}