区块链领域中Go语言的发展现状与未来趋势

package main

import (
    "crypto/sha256"
    "encoding/hex"
    "fmt"
)

type Block struct {
    Index     int
    Timestamp string
    Data      string
    Hash      string
    PrevHash  string
}

func calculateHash(block Block) string {
    record := string(block.Index) + block.Timestamp + block.Data + block.PrevHash
    h := sha256.New()
    h.Write([]byte(record))
    hashed := h.Sum(nil)
    return hex.EncodeToString(hashed)
}

func generateBlock(oldBlock Block, data string) Block {
    var newBlock Block

    newBlock.Index = oldBlock.Index + 1
    newBlock.Timestamp = "2022-01-01"
    newBlock.Data = data
    newBlock.PrevHash = oldBlock.Hash
    newBlock.Hash = calculateHash(newBlock)

    return newBlock
}

func main() {
    genesisBlock := Block{0, "2021-01-01", "Genesis Block", "", ""}
    chain := []Block{genesisBlock}

    newBlockData := "Data for new block"
    newBlock := generateBlock(chain[len(chain)-1], newBlockData)
    chain = append(chain, newBlock)

    fmt.Println("Blockchain:")
    for _, block := range chain {
        fmt.Printf("Index: %d
", block.Index)
        fmt.Printf("Timestamp: %s
", block.Timestamp)
        fmt.Printf("Data: %s
", block.Data)
        fmt.Printf("Hash: %s
", block.Hash)
        fmt.Printf("PrevHash: %s
", block.PrevHash)
        fmt.Println()
    }
}