Skip to main content
NullGraph runs on Solana devnet, a test network where you can experiment without using real money. To interact with the platform, you’ll need a browser wallet configured for devnet and some test tokens.
This guide uses Phantom, the most popular Solana wallet. NullGraph supports any Solana-compatible wallet, but Phantom offers the best user experience.

​
What You’ll Need

  • A desktop or laptop computer (Phantom is available on Chrome, Firefox, Brave, Edge)
  • 5 minutes of setup time
  • No prior crypto experience required

​
Install Phantom Wallet

​
Switch to Devnet

By default, Phantom connects to Solana mainnet (the real network). NullGraph uses devnet (a test network).

​
Get Devnet SOL

SOL is Solana’s native cryptocurrency, used to pay transaction fees. On devnet, SOL has no real-world value—you can get it for free.

​
Get Devnet BIO Tokens

BIO tokens are used for bounty rewards on NullGraph. On devnet, these are test tokens.
Devnet BIO tokens are project-specific test tokens. You’ll need to mint them yourself or receive them from the NullGraph team. Check the project’s Discord or documentation for the BIO token mint address and distribution method.

​
Connect to NullGraph

​
Understanding Transaction Costs

Every interaction with NullGraph requires a small transaction fee in SOL: Rent: Solana charges rent for data storage. If you close an account later, you get this SOL back. Total for 10 transactions: ~0.15 SOL (plenty of buffer with 1-5 SOL from the faucet)
BIO tokens are only required for creating bounties (you escrow the reward amount). Submitting NKAs and claiming bounties doesn’t require BIO—you earn BIO by claiming bounties.

​
Security Best Practices

Protect Your Recovery Phrase
  • Never type it into a website or app
  • Don’t store it in email, cloud storage, or screenshots
  • Don’t share it with anyone—not even “support” teams
Verify Connections
  • Always check the URL before connecting: nullgraph.vercel.app
  • Phantom shows which site is requesting connection
  • Disconnect from sites you don’t recognize (Settings → Trusted Apps)
Review Transactions
  • Phantom shows transaction details before you approve
  • Check the program address matches NullGraph’s program ID
  • Don’t approve transactions you don’t understand
Use Devnet for Testing
  • Devnet tokens have no real value
  • Perfect for learning without financial risk
  • Experiment freely!
If you move to mainnet later, your devnet wallet address stays the same, but your balances are separate. Never send real SOL or tokens to a devnet address.

​
Troubleshooting

“Insufficient SOL for transaction fee” error You’ve run out of devnet SOL. Return to the Solana faucet and request more. “Transaction rejected” or “User rejected the request” You clicked “Reject” in Phantom. Try the action again and click “Approve.” BIO tokens don’t appear in Phantom Manually add the token:
  1. Open Phantom
  2. Click Manage Token List → Add Token
  3. Paste the BIO mint address
  4. Click Add
Phantom shows “Mainnet” at the bottom You’re on the wrong network. Click the network selector and switch to Devnet. “Program error” or “Invalid account data” when submitting The NullGraph program might not be initialized. Contact the team or check the deployment status. Wallet won’t connect to NullGraph Try these steps:
  1. Refresh the NullGraph page
  2. Disconnect Phantom (Settings → Trusted Apps → NullGraph → Remove)
  3. Reconnect using the Connect Wallet button
  4. Clear browser cache and try again

​
Next Steps

Now that your wallet is set up:

Submit Your First NKA

Turn your null results into on-chain assets

Explore the Dashboard

Browse existing NKAs and protocol stats

Create a Bounty

Post a bounty for the null result you need

Claim Bounties

Submit your NKAs to earn BIO tokens

​
Common Questions

Do I need a Phantom wallet specifically? No. NullGraph works with any Solana wallet (Solflare, Backpack, etc.). Phantom is recommended for beginners. Can I use a mobile wallet? Phantom has a mobile app, but NullGraph is optimized for desktop browsers. Mobile support may vary. Is devnet safe to use? Yes. Devnet is a separate test blockchain. No real money is involved. Your mainnet funds are not at risk. Can I switch between devnet and mainnet? Yes, but don’t use NullGraph on mainnet unless you’re interacting with a mainnet deployment. The program ID is different. What if I lose my recovery phrase? You lose access to your wallet permanently. There’s no “forgot password” option in crypto. Always back up your recovery phrase. How do I get more devnet SOL? Use the Solana faucet as many times as needed. It’s free and unlimited. Can I send devnet tokens to someone else? Yes, but they also need to be on devnet. Devnet and mainnet are separate networks—tokens can’t cross over.