beber89

Verifying my Blockstack ID is secured with the address 1DkrieQuUHrV4WZdNYqi1nCk7NVgwhh5V6 https://explorer.blockstack.org/address/1DkrieQuUHrV4WZdNYqi1nCk7NVgwhh5V6

beber89

// Connect connects node to remote server via TCP
func (nd *Node) Connect() bool {
	// connect to this socket
	nd.ws = js.Global().Get("WebSocket").New(fmt.Sprintf("ws://%s:%d/ws", nd.toIP, nd.toPort))

	nd.ws.Call("addEventListener", "open", js.FuncOf(func(this js.Value, args []js.Value) interface{} {
		return nil
	}))
	nd.ws.Call("addEventListener", "message", js.FuncOf(func(this js.Value, args []js.Value) interface{} {
		message := args[0].Get("data").String()

beber89

// Node represents a user in the network
//  toIP is IP address of server to connect to
//  toPort is Port address of server to connect to
//  response is value unassignable by user, only read
type Node struct {
	toIP                   string
	toPort                 uint16
	response               string
	ws                     js.Value
	newTransactionCallback func(string)

beber89

type Blockchain struct {
	chain []Block
}

func listener(blkchn *Blockchain, msg string) {
	// mining happen creating new block
	// string payload shall be converted to transaction struct
	var trMsg TransactionMessage
	trMsg.Deserialize(msg)
	var blk Block

beber89

func (blk *Block) hashValid() bool {
	hash := blk.hash
	// put in mind Little Endian
	// converting the 8 most significant bytes of hash to one number int
	hashAsInt := uint64(0)
	for i := uint8(1); i <= uint8(8); i++ {
		hashAsInt = uint64(hash[32-i])<<((8-i)*8) + hashAsInt
	}
	diff := (uint64(1)<<63)>>(blk.difficulty-1) - 1
	return hashAsInt <= diff

beber89

func (blk *Block) doHash() {
	type toBeHashed struct {
		id            uint64
		lastBlockHash [32]byte
		nonce         uint64
		payload       Transaction
		difficulty    uint8
		timestamp     uint64
	}
	h := sha256.New()

beber89

// Block is the building entity for the blockchain
type Block struct {
	id            uint64
	lastBlockHash [32]byte
	nonce         uint64
	payload       Transaction
	difficulty    uint8
	timestamp     uint64
	hash          [32]byte
}

beber89

type Transaction struct {
	From   string  `json:"from"`
	To     string  `json:"to"`
	Amount float64 `json:"amount"`
}

beber89

var wg sync.WaitGroup

func main() {
	wg.Add(1)
	web.RegisterCallbacks()
	wg.Wait()
}

beber89

var NotifyListeners func()

// Wallet is the interface struct to the blockchain for the user
type Wallet struct {
	username string
	chain    *Blockchain
}

// NewWallet creates a Wallet struct
func NewWallet(username string) Wallet {