0

I'm trying to send testnet with bitcoinjs, but when I go to broadcast the hex, it gives me an error code that says "fee is too high: 12372928". Now, from my understanding, the fee is the input - output. However, even if I increase the output to match the wallet's balance, I get the same exact error message. Here's my code:

        this.setState({
            address: 'mphWVWbPgGKuaMpSpGNA3Ffrpva5cRChqP',
            privateKey: 'cW6dLEqkk2HAbQTSJaHnn4w3kd2iJfhBREccEE3vzrq8kcVE5TqS',
        });      
}

createTransaction = (e) => {
    e.preventDefault()
    const {address, privateKey} = this.state;
    var hashURL = `https://api.blockcypher.com/v1/btc/test3/addrs/${address}`


        axios.get(hashURL).then((response) => {
            this.setState({
                hash: response.data.txrefs[0].tx_hash
            })
        }).then((result) => {

        var tx = new bitcoin.TransactionBuilder(testnet);

        var txId = this.state.hash;

        console.log(txId);

        tx.addInput(txId, 0)

        tx.addOutput(this.state.add, 1000000)

        var keyPair2 = bitcoin.ECPair.fromWIF(privateKey, testnet);

        tx.sign(0, keyPair2);
        console.log(tx.build().toHex());
        }
    )

}

Would there be a way to manually set the fee to always be something like .0001?

0

The miner fee will, by default, equal the inputs - outputs of your transaction.

I notice some problems with your code. You do not specify a change address to send the left-over amount. If I have an unspent output of 100 BTC and I want to send 10 BTC to someone else, I should have 1 input (the unspent output from the previous transaction) and 2 outputs (the receiver address and the change address). The inputs and outputs will look like this:

Inputs

  • Unspent output of 100 BTC

Outputs

  • Receiver address with 10 BTC
  • Change address (your BTC address) with 89.999 BTC

The fee will be 0.001 BTC since (in)(100) - (out)(10 + 89.999) = 0.001.

Hope I was able to help.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.