How to bridge assets from Ethereum (Base) to Cosmos using Kepler or Leap Wallet
April 27, 2025
Bridging assets
Penumbra is a fully private, end-to-end encrypted blockchain built using the Cosmos stack.
This guide walks users through how to bridge assets that are within the Ethereum ecosystem on Base, into Penumbra, using a Cosmos wallet like Keplr or Leap.
What You’ll Need to Get Started
Before you begin, make sure you have the following:
CoinBase Wallet Installed and funded with:
ETH on Base - for covering gas fees
Keplr or Leap Wallet These are Cosmos-native wallets that support IBC. You’ll use either one to receive assets on the Cosmos side and route them into Penumbra.
Why Bridge to Penumbra?
Penumbra is a fully private shielded zone that enables:
Encrypted transactions
Private staking and governance
A privacy-preserving DEX with no MEV risk
Once your assets are in Penumbra, you can transact, stake, swap, or LP without revealing your wallet balances or activity.
Step-by-Step: Bridge assets from Base to Penumbra
Select your Base wallet and approve the connection
2. Choose the Asset and Networks
Select your token or asset and their best route. For instance, USDC.
Confirm Base as the source network
Choose Osmosis or another supported Cosmos chain as the destination network (you’ll later move this into Penumbra)
Enter the amount that you want to bridge and click Send.
Click “Set Destination Address”.
3. Connect Your Cosmos Wallet (Keplr or Leap)
Select Keplr (or Leap)
Click “Connect Wallet”.
Enter your password and unlock
4. Review and Confirm
Review the transfer details (amount, source chain, destination chain)
Click “Confirm”
5. Sign and Wait for Confirmation
Approve the transaction in your wallet to confirm
Wait for the bridge to confirm transfer by completing the process successfully.
Check that the funds have been received on your Keplr or Leap wallet balance
6. Move Assets into Penumbra
Once funds are received on the Cosmos chain (e.g., Osmosis), you can transfer them into Penumbra using Prax Wallet. From there, they become shielded and private. This guide takes you through how to create your Prax wallet and bridge funds from the Cosmos to Penumbra.
Shielded Assets on Penumbra
Once your funds land in Penumbra:
They are fully shielded by default. This means that no one would be able to track your activity and what you choose to do with your assets within the network.
Your transactions, balances, and liquidity positions are end-to-end encrypted
You can stake, swap, and LP privately, without exposing any data on-chain
What Makes Penumbra Unique
Default Privacy Every transaction is encrypted
MEV Protection Shielded order flow and LP privacy
Cross-Chain Interoperability Connects to 110+ IBC chains
No opt-in privacy It’s built-in, not bolted on
TLDR: Bridge into Privacy in Minutes
Ensure you have your ETH and Keplr or Leap wallet ready
Move USDC from Ethereum to a Cosmos wallet like Keplr or Leap
Route funds into Penumbra’s wallet, Prax Wallet, to shield them
Enjoy private staking, swapping, trading and governance
