Bridge from USDC
Convert USDC from Solana or Base to USDB on Spark
Trade BTC for USDB
Swap your BTC for USDB instantly
Bridge from USDC
The fastest way to get USDB is bridging USDC from another chain.1
Go to the USDB Bridge
Navigate to usdb.flashnet.xyz/bridge
2
Select source chain
Choose Solana or Base as your source chain
3
Connect your wallet
Connect the wallet holding your USDC (Phantom, Coinbase Wallet, etc.)
4
Enter amount
Enter the amount of USDC you want to bridge
5
Enter your Spark address
Paste your Spark wallet address (starts with
sp1...)6
Confirm and bridge
Approve the transaction in your wallet. USDB arrives in ~1-2 minutes.
Supported Source Chains
| Chain | Token | Bridge Time |
|---|---|---|
| Solana | USDC | ~1-2 minutes |
| Base | USDC | ~1-2 minutes |
Bridge fees vary by route and network conditions. The bridge UI shows exact fees before confirmation.
What You Need
Before getting USDB, make sure you have:A Spark wallet
A Spark wallet
You need a Spark wallet to receive USDB. Use any Spark-compatible wallet like Xverse.
USDC or BTC
USDC or BTC
Either USDC on Solana/Base (for bridging) or BTC on Spark (for swapping).
After You Get USDB
Once you have USDB in your Spark wallet, you can:- Earn rewards: Hold USDB to earn BTC rewards (3.5-6% APY)
- Earn Flashpoints: Accumulate points that boost your rewards
- Trade: Swap back to BTC anytime
- Transfer: Send USDB to any Spark address, free and instant