个回答

• qq_追心_

  2019-12-23 10:02:35

  https://github.com/BlockChain-dragon/blockchain-deno   原码

  0

• 慕数据753954

  2019-10-07 19:24:19

  package core
  
  import (
     "fmt"
     "log"
  )
  
  type Blockchain struct {
     Blocks []*Block
  }
  
  
  //创世区块链
  func NewBlockChain() *Blockchain {
     genesis := GenerateOriginBlock()
     blockchain := Blockchain{}
     blockchain.AppendBlock(&genesis)
     return &blockchain
  }
  
  //每一个新数据都创建一个区块，方便外部调用
  func (bc *Blockchain)SendData(data string) {
     preBlock := bc.Blocks[len(bc.Blocks) - 1]
     newBlock := GenerateNewBlock(*preBlock, data)
     bc.AppendBlock(&newBlock)
  }
  
  
  //往区块链里添加区块
  func (bc *Blockchain) AppendBlock(newBlock *Block) {
     if len(bc.Blocks) == 0 {//第一个区块
        bc.Blocks = append(bc.Blocks,newBlock)
        return
     }
     if !isValid(*newBlock,*bc.Blocks[len(bc.Blocks) - 1]) {
        log.Fatal("Invalid block")
     }
     bc.Blocks = append(bc.Blocks,newBlock)
  }
  
  //打印区块链
  func (bc *Blockchain) Print()  {
     for _,block := range bc.Blocks {
        fmt.Printf("Index:%d\n",block.Index)
        fmt.Printf("PrevHash:%s\n",block.PrevBlockHash)
        fmt.Printf("Hash:%s\n",block.Hash)
        fmt.Printf("Timestamp:%d\n",block.Timestamp)
        fmt.Printf("Data:%s\n",block.Data)
     }
  }
  //新区块校验
  func isValid(newBlock Block,oldBlock Block) bool {
     if newBlock.Index - 1 != oldBlock.Index {
        return false
     }
  
     if newBlock.PrevBlockHash != oldBlock.Hash {
        return false
     }
  
     if calculateHash(newBlock) != newBlock.Hash {
        return false
     }
     return true
  }

  
  

  0

• 慕数据753954

  2019-10-07 19:23:00

  package core
  
  import (
     "fmt"
     "log"
  )
  
  type Blockchain struct {
     Blocks []*Block
  }
  
  
  //创世区块链
  func NewBlockChain() *Blockchain {
     genesis := GenerateOriginBlock()
     blockchain := Blockchain{}
     blockchain.AppendBlock(&genesis)
     return &blockchain
  }
  
  //每一个新数据都创建一个区块，方便外部调用
  func (bc *Blockchain)SendData(data string) {
     preBlock := bc.Blocks[len(bc.Blocks) - 1]
     newBlock := GenerateNewBlock(*preBlock, data)
     bc.AppendBlock(&newBlock)
  }
  
  
  //往区块链里添加区块
  func (bc *Blockchain) AppendBlock(newBlock *Block) {
     if len(bc.Blocks) == 0 {//第一个区块
        bc.Blocks = append(bc.Blocks,newBlock)
        return
     }
     if !isValid(*newBlock,*bc.Blocks[len(bc.Blocks) - 1]) {
        log.Fatal("Invalid block")
     }
     bc.Blocks = append(bc.Blocks,newBlock)
  }
  
  //打印区块链
  func (bc *Blockchain) Print()  {
     for _,block := range bc.Blocks {
        fmt.Printf("Index:%d\n",block.Index)
        fmt.Printf("PrevHash:%s\n",block.PrevBlockHash)
        fmt.Printf("Hash:%s\n",block.Hash)
        fmt.Printf("Timestamp:%d\n",block.Timestamp)
        fmt.Printf("Data:%s\n",block.Data)
     }
  }
  //新区块校验
  func isValid(newBlock Block,oldBlock Block) bool {
     if newBlock.Index - 1 != oldBlock.Index {
        return false
     }
  
     if newBlock.PrevBlockHash != oldBlock.Hash {
        return false
     }
  
     if calculateHash(newBlock) != newBlock.Hash {
        return false
     }
     return true
  }

  
  

  
  

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