How to Bridge to Katana: Assets, vbTokens & Steps
Robert Harris
To bridge to Katana, use the official Katana bridge at app.katana.network: deposit a supported asset (USDC, USDT, WETH/ETH, or WBTC) and it arrives on Katana as a 1:1 vbToken that also earns yield. Katana is an Ethereum Layer-2 (chain ID 747474) that uses ETH for gas and is connected through Polygon’s AggLayer shared bridge. This guide walks through how bridging works, what vbTokens are, and how to do it safely.
Key takeaways
- Bridge through the official Katana bridge (app.katana.network) — Katana is connected via Polygon’s AggLayer.
- Supported assets are USDC, USDT, WETH/ETH, and WBTC; you receive 1:1 vbTokens (vbUSDC, vbUSDT, vbETH, vbWBTC).
- vbTokens are backed 1:1 by the underlying asset, which VaultBridge puts to work in low-risk Morpho vaults on Ethereum.
- Holding vbTokens idle does not auto-compound — deploy them in lending or liquidity pools to capture the boosted yield.
- You pay gas in ETH, and you should always confirm the chain ID is 747474 before approving anything.
What you need before bridging
- An EVM wallet such as MetaMask. Add Katana first — see our Katana Network setup guide (chain ID 747474, RPC, explorer).
- A supported asset on Ethereum: USDC, USDT, WETH/ETH, or WBTC.
- A small amount of ETH for gas on both Ethereum and Katana.
How to bridge to Katana, step by step
- Go to the official Katana app at app.katana.network and open the Bridge.
- Connect your EVM wallet and confirm you are bridging from Ethereum to Katana (chain ID 747474).
- Select a supported asset (USDC, USDT, WETH/ETH, or WBTC) and enter an amount.
- Approve the token, then confirm the bridge transaction and pay the ETH gas.
- Wait for the bridge to finalize. On Katana you receive the matching vbToken (for example vbUSDC or vbETH).
- Put your vbTokens to work in a lending market or liquidity pool to earn the boosted yield.
What are vbTokens?
When you bridge through Katana, you do not receive a plain wrapped asset — you receive a vbToken (vbUSDC, vbUSDT, vbETH, vbWBTC). Each vbToken is backed 1:1 by your deposit, and VaultBridge deploys that underlying asset into low-risk, high-liquidity Morpho vaults on Ethereum. The yield those vaults generate is harvested and returned to Katana as real-yield incentives. The full mechanism is in our VaultBridge and AUSD guide.
One important detail: an idle vbToken sitting in your wallet does not compound on its own. To capture the boosted yield, supply it to a lending market or a liquidity pool on Katana.
Supported bridge assets
| Deposit asset | You receive on Katana |
|---|---|
| USDC | vbUSDC |
| USDT | vbUSDT |
| WETH / ETH | vbETH |
| WBTC | vbWBTC |
How the Katana bridge works
Katana is an Ethereum Layer-2 that uses an OP-stack base with Polygon’s AggLayer shared bridge and validity proofs. The AggLayer bridge contract handles interoperability between Ethereum, Katana, and other AggLayer-connected chains, while VaultBridge — built by Polygon Labs’ AggLayer team — is the piece that turns bridged deposits into yield-bearing vbTokens. To withdraw, you bridge vbTokens back the same way and redeem the underlying asset on Ethereum.
Bridge safely
- Only bridge from the official app (app.katana.network). Bookmark it; do not follow links from DMs.
- Confirm the destination chain ID is 747474 before approving.
- Remember Katana is an Ethereum Layer-2, not a Solana chain — see Is Katana on Solana? for red flags.
- Start with a small test amount the first time.
New to the chain entirely? Start with What is Katana? Want to put bridged assets to work? See the Katana staking guide.
Frequently asked questions
How do I bridge to Katana?
Use the official bridge at app.katana.network: connect an EVM wallet, pick a supported asset (USDC, USDT, WETH/ETH, WBTC), confirm the destination is Katana (chain ID 747474), approve, and pay ETH gas. You receive a 1:1 vbToken on Katana.
What tokens can I bridge to Katana?
USDC, USDT, WETH/ETH, and WBTC are supported, and you receive vbUSDC, vbUSDT, vbETH, or vbWBTC in return.
Do vbTokens earn yield automatically?
No. vbTokens are backed by assets earning in Morpho vaults on Ethereum, but an idle vbToken in your wallet does not compound. Supply it to a lending market or liquidity pool on Katana to earn the boosted yield.
What does it cost to bridge to Katana?
You pay network gas in ETH on both Ethereum and Katana. There is no separate token to buy just to bridge.