Set transaction inputs, outputs from UTXOs

[gedanziger]

Set transaction inputs as each of the UTXOs from step #24.

For each utxo i in the array transactionUtxos:

Follow this pseudocode:

const rawTransaction= new bitcoin.TransactionBuilder()
for (i = 0 : transactionUtxos.length):
  rawTransaction.addInput(transactionUtxos[i].txId, transactionUtxos[i].vout)

This generates the inputs. For the outputs, do the following:

Compute these amounts:

• amount - this is the transaction amount sent from the input field
• change - this is the change remaining. It is calculated by the sum of the the utxo amounts used in the transaction (transactionUtxos) - (amount + fee).
• fee - this amount is fixed to a constant FEE_AMOUNT that we define in the app

Represent all amounts in satoshi.

rawTransaction.addOutput('RECEIVE_ADDRESS', `amount`)
rawTransaction.addOutput('MY_ADDRESS', `change`)

Set the receive address to the one entered in the input field, and my address to the users own address.

[0xweb3builder]

@gedanziger Can you post details about FEE?

[0xweb3builder]

minor FEE and fixed fee will be used for all transactions?

[0xweb3builder]

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