check.go

package main

import (
	"fmt"
	"math/big"

	"github.com/btcsuite/btcutil/base58"
)

func main() {
	encoded := "1HZwkjkeaoZfTSaJxDw6aKkxp45agDiEzN"
	decoded, version, err := base58.CheckDecode(encoded)
	if err != nil {
		fmt.Println(err)
		return
	}

	// Show the decoded data.
	fmt.Printf("Decoded data: %x\n", decoded)
	fmt.Printf("Decoded decimal: %s\n", big.NewInt(0).SetBytes(decoded))
	fmt.Println("Version Byte:", version)
}