arweave

Arweave Go SDK

Golang Client to interact with the Arweave Blockchain.

Usage

Wallet

In the current version, you can load the Arweave wallet file created from the Arweave server or the plugin.

// create a new wallet instance
w := wallet.NewWallet()
// extract the key from the wallet instance
err = w.LoadKeyFromFile("./arweave.json")
if err != nil {
	//...
}

You can directly load the key by using it's filepath or pass it as an array of bytes using LoadKey([]byte).

With the wallet struct, you can sign and verify a message:

// sign the message "example"
msg := []byte("example")
sig, err := w.Sign(msg))
if err != nil {
	//...
}
err = w.Verify(msg, sig)
if err != nil {
	// message signature is not valid...
}
// message signature is valid

API

You can call all of the Arweave HTTP api endpoints using the api package. First you must give it the node url or IP address.

ipAddress := "127.0.0.1"
c, err := api.Dial(ipAddress)
if err != nil {
	// problem connecting
}

To call the endpoints, you will need to pass in a context.

c.GetBalance(context.TODO(), "1seRanklLU_1VTGkEk7P0xAwMJfA7owA1JHW5KyZKlY")

Transactions

To create a new transaction, you will need to interact with the transactor package. The transactor package has 3 main functions, creating, sending and waiting for a transaction.

	// create a new transactor client
	ar, err := transactor.NewTransactor("127.0.0.1")
	if err != nil {
		//...
	}

	// create a new wallet instance
	w := wallet.NewWallet()
	// extract the key from the wallet instance
	err = w.LoadKeyFromFile("./arweave.json")
	if err != nil {
		//...
	}
	// create a transaction
	txBuilder, err := ar.CreateTransaction(context.TODO(), w, "0", []byte(""), "1seRanklLU_1VTGkEk7P0xAwMJfA7owA1JHW5KyZKlY")
	if err != nil {
		//...
	}
	
	// sign the transaction
	txn, err := txBuilder.Sign(w)
	if err != nil {
		//...
	}

	// send the transaction
	resp, err := ar.SendTransaction(context.TODO(), txn)
	if err != nil {
		//...
	}

	// wait for the transaction to get mined
	finalTx, err := ar.WaitMined(context.TODO(), txn)
	if err != nil {
		//...
	}
	// get the hash of the transaction
	fmt.Println(finalTx.Hash())

If you enjoy the library, please consider donating:

• Arweave Address: pfJXiTwwjQwSJF9VT1ZK6kauvobWuKKLUzjz29R1gbQ
• Ethereum Address: 0x3E42b8b399dca71b5c004921Fc6eFfa8dDc9409d