mainbc.go

package main
import (
 "fmt"
 bc "./blockchain"
)
const (
 DBNAME = "blockchain.db"
)
func main() {
 miner := bc.NewUser()
 bc.NewChain(DBNAME, miner.Address())
 chain := bc.LoadChain(DBNAME)
 for i := 0; i < 3; i++ {
  block := bc.NewBlock(miner.Address(), chain.LastHash())
  block.AddTransaction(chain, 
   bc.NewTransaction(miner, chain.LastHash(), "aaa", 5))
  block.AddTransaction(chain, 
   bc.NewTransaction(miner, chain.LastHash(), "bbb", 3))
  block.Accept(chain, miner, make(chan bool))
  chain.AddBlock(block)
 }
 var sblock string
 rows, err := chain.DB.Query("SELECT Block FROM BlockChain")
 if err != nil {
  panic("error: query to db")
 }
 for rows.Next() {
  rows.Scan(&sblock)
  fmt.Println(sblock)
 }
}