Go语言实现区块链——添加coinbase交易及UTXO

package main
 
import (
    "bytes"
    "crypto/sha256"
    "encoding/binary"
    "fmt"
    "log"
 
    "github.com/davecgh/go-spew/spew"
)
 
// ... 此处省略定义常量和数据结构的代码 ...
 
// 创建一个新的交易
func NewCoinbaseTX(address []byte, value int64) *Transaction {
    txin := &TxInput{
        PrevOutPoint: OutPoint{
            TxHash:  nil,
            Index:   -1,
            Tree:    int8(RegularTree),
            Unspent: true,
        },
        SignatureScript: []byte{},
        Sequence:        SequenceFinal,
    }
 
    txout := &TxOutput{
        Value:    value,
        PkScript: address,
    }
 
    tx := Transaction{
        Version: 1,
        TxIn:    []*TxInput{txin},
        TxOut:   []*TxOutput{txout},
        LockTime: 0,
        Subnetwork: RegularTree,
    }
 
    return &tx
}
 
// 添加交易至区块并更新UTXO集
func (b *Block) AddTransaction(tx *Transaction, utxo UTXOSet) []*Transaction {
    txHash := tx.TxHash()
    b.Transactions = append(b.Transactions, tx)
 
    // 更新UTXO集
    for index, txOut := range tx.TxOut {
        outPoint := OutPoint{
            TxHash:  &txHash,
            Index:   uint32(index),
            Tree:    tx.Subnetwork,
            Unspent: true,
        }
        utxo.AddUTXO(outPoint, txOut)
    }
 
    return b.Transactions
}
 
func main() {
    // 创建一个新的区块
    block := NewBlock([]byte{}, []byte{})
 
    // 创建一个新的交易，包括coinbase
    coinbaseTX := NewCoinbaseTX([]byte("address1"), 100)
    fmt.Println("Coinbase TX:")
    spew.Dump(coinbaseTX)
 
    // 添加交易至区块
    block.AddTransaction(coinbaseTX, nil)
    fmt.Println("Block after adding coinbase TX:")
    spew.Dump(block)
}

这段代码首先定义了一个新的coinbase交易，然后将其添加到一个新的区块中。在添加交易时，它还会更新UTXO集。这个过程展示了如何在区块链中创建和处理交易的基本步骤。