d4l3k/go-electrum

A pure Go (golang) electrum bitcoin wallet library.

go-electrum

A pure Go Electrum bitcoin library. This makes it easy to write bitcoin based services using Go without having to run a full bitcoin node.

This is very much WIP and has a number of unimplemented methods. This will eventually be rewritten into a more Go-esque library and handle wallet generation.

Packages provided

• electrum - Library for using JSON-RPC to talk directly to Electrum servers.
• wallet - A bitcoin wallet built on btcwallet with Electrum as the backend.
• irc - A helper module for finding electrum servers using the #electrum IRC channel on Freenode.

Usage

See example/ for more.

electrum

$ go get -u github.com/d4l3k/go-electrum/electrum

package main

import (
  "log"

  "github.com/d4l3k/go-electrum/electrum"
)

func main() {
	node := electrum.NewNode()
	if err := node.ConnectTCP("electrum.dragonzone.net:50001"); err != nil {
		log.Fatal(err)
	}
	balance, err := node.BlockchainAddressGetBalance("1NS17iag9jJgTHD1VXjvLCEnZuQ3rJDE9L")
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("Address balance: %+v", balance)
}

wallet

$ go get -u github.com/d4l3k/go-electrum/wallet

package main

import (
  "log"

  "github.com/btcsuite/btcutil"
  "github.com/d4l3k/go-electrum/wallet"
)

func main() {
  seed, err := hdkeychain.GenerateSeed(hdkeychain.RecommendedSeedLen)
  if err != nil {
    log.Fatal(err)
  }
  w, err := wallet.Create("test.wallet", "pass", seed)
  if err != nil {
    log.Fatal(err)
  }
  addrs, err := w.GenAddresses(1)
  if err != nil {
    log.Fatal(err)
  }
  log.Printf("Address: %s", addrs[0])
  err = w.SendBitcoin(map[string]btcutil.Amount{
    "18mS21JLSWJcTwKV8ZEv5SvroKAqkbYfPy": btcutil.NewAmount(1.0),
  }, 6)
  if err != nil {
    log.Fatal(err)
  }
}

irc

$ go get -u github.com/d4l3k/go-electrum/irc

package main

import (
	"log"

	"github.com/d4l3k/go-electrum/irc"
)

func main() {
	log.Println(irc.FindElectrumServers())
}

License

go-electrum is licensed under the MIT license.

Made by Tristan Rice.

go-electrum's Issues

Incompatibility with btcsuite

Hi,

It seems that go-electrum/wallet does not build anymore with up to date btcsuite package:

go get
# github.com/d4l3k/go-electrum/wallet
../github.com/d4l3k/go-electrum/wallet/wallet.go:43:17: cannot use maddr.Address() (type "github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcutil".Address) as type "github.com/btcsuite/btcutil".Address in append:
    "github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcutil".Address does not implement "github.com/btcsuite/btcutil".Address (wrong type for IsForNet method)
        have IsForNet(*"github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcd/chaincfg".Params) bool
        want IsForNet(*"github.com/btcsuite/btcd/chaincfg".Params) bool
../github.com/d4l3k/go-electrum/wallet/wallet.go:80:43: cannot use amounts (type map[string]"github.com/btcsuite/btcutil".Amount) as type []*"github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcd/wire".TxOut in argument to w.wallet.CreateSimpleTx
../github.com/d4l3k/go-electrum/wallet/wallet.go:88:51: createdTx.MsgTx undefined (type *txauthor.AuthoredTx has no field or method MsgTx)
../github.com/d4l3k/go-electrum/wallet/wallet.go:124:12: cannot use addr.Address() (type "github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcutil".Address) as type "github.com/btcsuite/btcutil".Address in assignment:
    "github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcutil".Address does not implement "github.com/btcsuite/btcutil".Address (wrong type for IsForNet method)
        have IsForNet(*"github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcd/chaincfg".Params) bool
        want IsForNet(*"github.com/btcsuite/btcd/chaincfg".Params) bool
../github.com/d4l3k/go-electrum/wallet/wallet.go:140:15: cannot assign 1 values to 2 variables
../github.com/d4l3k/go-electrum/wallet/wallet.go:179:32: too many arguments in call to wallet.Open
    have (nil, *"github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcd/chaincfg".Params, walletdb.DB, walletdb.Namespace, walletdb.Namespace, *waddrmgr.OpenCallbacks)
    want (walletdb.DB, []byte, *waddrmgr.OpenCallbacks, *"github.com/btcsuite/btcwallet/vendor/github.com/btcsuite/btcd/chaincfg".Params)`llet/vendor/github.com/btcsuite/btcd/chaincfg".Params)`

Get Addresses from Master Public Key

Hey!

Great library! As I understand it, one would be able to get all the addresses from the Master Public Key. I took a quick look and from the looks of it, it doesn't seem possible to just do that by this library. Is this something you could add support for?

The idea is that I would just need the Master Public Key, and then be able to get all the addresses from that using this library. No need with anything private that is.

Thanks!

Wallet not working, log included

# github.com/d4l3k/go-electrum/wallet
../../github.com/d4l3k/go-electrum/wallet/wallet.go:80: cannot use amounts (type map[string]btcutil.Amount) as type []*wire.TxOut in argument to w.wallet.CreateSimpleTx
../../github.com/d4l3k/go-electrum/wallet/wallet.go:88: createdTx.MsgTx undefined (type *txauthor.AuthoredTx has no field or method MsgTx)
../../github.com/d4l3k/go-electrum/wallet/wallet.go:140: assignment count mismatch: 2 = 1
../../github.com/d4l3k/go-electrum/wallet/wallet.go:179: too many arguments in call to wallet.Open
	have (nil, *chaincfg.Params, walletdb.DB, walletdb.Namespace, walletdb.Namespace, *waddrmgr.OpenCallbacks)
	want (walletdb.DB, []byte, *waddrmgr.OpenCallbacks, *chaincfg.Params)

Is your library ready to use for production?

I'm planning to build an application with following features in it.

1. Will have an electrum wallet setup
2. User can create multiple wallets
3. User can create multiple addresses
4. User can generate Seed of their wallets
5. User can send BTC to other
6. User can view transaction history

I want to confirm if I can use this library for these features or not. As it states that the project is still under progress, I would like to know which features have been completed successfully.