Transfer Multiple addresses in a single BTC Test Network Transaction

The idea is to test receiving from multiple outputs in UTXO based blockchains.

Quickstart

Run npm install
Run npm run build
Run npm run start:prod
Create a new address (GET http://localhost:3000/createAddress)
Copy the address code and add it in app.service.ts in line 45.
Copy the secret wif and add it in app.service.ts in line 48.
Replace with your own addresses in app.service.ts lines 42 to 44.
Send some Bitcoin to your new generated address code and wait for it to confirm (https://testnet-faucet.mempool.co/)
Once confirmed copy the transaction hash and add it in app.service.ts in line 38.
If you modify the amount of outputs or inputs, be sure to update the fee in line 35 and change the amounts to send each output.
Call the sendMultiple endpoint (GET http://localhost:3000/createAddress) and copy the resulting raw transaction
Broadcast transaction to (https://live.blockcypher.com/btc-testnet/pushtx/)