Chapter 10: Quick Answers
One-line summary: Every question you're too afraid to ask — answered fast.
"Do I need to know how to code?"
No. Full stop. Bob writes all the code. You describe what you want. That's the whole deal.
"Is this free?"
Yes. Building on testnet (the test environment) is completely free. You use test Bitcoin that costs nothing.
Real Bitcoin is only needed if you want to deploy to mainnet (the real Bitcoin network) — but for building, testing, and entering the competition, everything is free.
"What if Bob builds something wrong?"
Tell him what's wrong. He'll fix it. That's genuinely the whole process. "The button is the wrong color" → Bob fixes it. "The list isn't showing up" → Bob fixes it. No frustration required.
"Can I build with a friend?"
Yes! You can share your project folder or use GitHub (Bob can help set this up). Two people describing ideas and iterating together is actually a great way to build.
"What's OPWallet?"
A browser extension for Bitcoin. It lives in your Chrome or Brave browser like an ad blocker. You use it to connect to Bitcoin apps, send and receive test Bitcoin, and sign transactions. Think of it as your Bitcoin identity online.
"What's a smart contract?"
An app that runs on Bitcoin automatically without any company or person in the middle.
When you send a tip through a tip jar app, the smart contract handles it — no bank, no Venmo, no middleman. It just runs.
You don't need to understand how it works to build one. Bob handles that entirely.
"What's a 'transaction'?"
Any time something happens on Bitcoin — someone sends money, someone votes, someone mints an NFT — that's a transaction. It gets recorded on Bitcoin forever.
Think of it like a permanent receipt.
"What's localhost?"
"Localhost" means your own computer. When Bob says "your app is running at localhost:3000," it means open your browser and type localhost:3000 in the address bar. The app is running on your machine — just not on the internet yet.
"How long does it take to build something?"
Your first app: 30–60 minutes from "I have an idea" to "it's working on my screen."
After that, once you know how to talk to Bob effectively, you can build simple apps in under 20 minutes.
"Can I win money?"
Yes. There are weekly prizes for the best submissions. Exact amounts vary but they're real prizes worth competing for.
Winners are announced in the weekly Twitter/X Spaces. Even if you don't win your first week, submit anyway. Consistency gets noticed.
"What if I have no idea what to build?"
Go to Chapter 8. There are 20 ideas with ready-to-copy prompts. Pick one. Send it to Bob. You'll have something working within the hour.
"Is my app actually on Bitcoin?"
When you're on testnet: it's on a test version of Bitcoin. Perfect for building and experimenting.
When you deploy for real: yes. Your app is genuinely running on Bitcoin. That thing you described and Bob built — it's on the most secure network in the world.
That's not nothing.
"What if I get stuck and this guide doesn't help?"
Ask Bob. Seriously. Tell him exactly where you are and what's confusing. He'll help you get unstuck.
The OP_NET Discord community is also a great place to ask — builders there love helping newcomers.
#One Last Thing
You made it through the whole guide. Now close it and go build something.
The best way to learn is by doing. Your first conversation with Bob is 30 seconds away.
Go.
Good luck. We mean it. You've got this.
Ready to test your knowledge?
20 questions covering everything from vibecoding basics to shipping a complete dApp.