Fold Frontend Take-Home Challenge

Welcome to the Fold Frontend Take-Home Challenge.

This project simulates a core part of the Fold app experience: sending Bitcoin and viewing past transactions. The goal is to see how you approach building features, solving coding problems, and iterating on an existing codebase.

Getting Started

• This project is scaffolded with basic routing and UI already in place.
• Preview works on Expo Go - no build steps needed.
• You'll be extending the existing app to support sending Bitcoin to another address and viewing a transaction history.
• You're encouraged to bring your own decisions to state management, user flow, and code structure.

Your Task

Implement the following two user stories:

1. As a user, I want to send Bitcoin to another address

• I should be able to enter a recipient's Bitcoin address, a BTC amount, and see the USD equivalent.
• The app should provide input validation where necessary
• When I submit the form, a new transaction should be added to the transaction list.
• Consider how this would work in a real app scenario.
• Make sure inputs and amounts are formatted correctly.

optional: You can use a regex or a BTC validation library if you'd like.

2. As a user, I want to see my transaction history in one place

• I should be able to view a list of all my past Bitcoin transactions I've sent or received.
• Create a reusable component that would handle display.
• You should see a mock of the transaction data in the component, feel free to add more data to the mock if needed.

Notes

• Feel free to add any libraries that you feel will help in your solution.
• Add unit tests where you feel appropriate - don't go crazy.
• Update the README to reflect any thoughts you might have (ex: what you would do if you had more time that sort of thing).

Bonus: Simulate a Real Blockchain Transaction

If you'd like to go further, feel free to mock a real testnet transaction using the Bitcoin Testnet API (like Blockstream or mempool.space). This isn't required - just a nice touch if you want to show real integration or async flow.

Previewing the App

You can run the app with:

npm install -g expo-cli
npm install
npm start

Submitting your Work

When you're done, please submit:

• Create a private repository on Github.
• Add Tiffany, Victor and Spencer as collaborators using these handles: tiffsaw, martins5225 and vineyardbovines.
• Any notes that you'd like to share in your README (ex: assumptions you made, tradeoffs or decisions and what you'd improve with more time).

Time Expectation

This challenge is designed to take around 2 hours. Focus on your best judgment, clean code, and a thoughtful implementation.