USDC Migration Guide
USDC Migration on Sei: USDC.n to USDC
Overview
On Sei Mainnet, there are currently two types of USDC:
USDC.n: The IBC-enabled version of USDC, issued by Circle on the Noble chain and bridged to Cosmos-based chains like Sei.
USDC: Native USDC on Sei is the official version of USDC directly issued by Circle to Sei via CCTP
Both are usable today, but USDC is becoming the new standard across the Sei DeFi ecosystem.
Understanding the difference
Origin
Native USDC on Sei
Bridge from Noble
Bridging Method
Circle CCTP
IBC
Cross-Chain Support
Native CCTP support (Ethereum, Solana, etc.)
Limited to Cosmos IBC chains
Ecosystem Preference
Preferred
Deprecated
Why migrate to USDC?
Protocols on Sei (including Yei Finance) are adopting USDC as the primary stablecoin because of its:
USDC is issued directly by Circle, ensuring official backing and credibility.
It uses the ERC-20 standard, fully compatible with Sei’s EVM infrastructure.
USDC supports native cross-chain transfers via Circle’s CCTP.
It has stronger oracle, analytics, and developer tooling support.
Integrating USDC into DeFi protocols is simpler and safer.
USDC will be the default and supported stablecoin as Sei moves to EVM-only.
How to migrate?
You can migrate to native USDC using the following three methods:
Method 1:
Swap on YeiSwap.
Visit YeiSwap to convert assets into USDC directly on Sei.
Method 2:
Use YeiBridge to migrate.
Visit YeiBridge to send your USDC.n to another chain (such as Avalanche, Arbitrum) as USDC.
Bridge USDC back to Sei as native USDC.
Make sure you have enough assets (such as AVAX or ETH) on the destination chain to cover transaction fees.
Method 3:
This method is better for large amounts, offering zero slippage from Sei back to Noble (as of July 24, 2025). It leverages CCTP but requires additional setup, such as configuring a Keplr wallet.
Use CCTP via Skip:Go Bridge to Bridge Out.
Transfer USDC onto your Keplr wallet.
Option 1: Send USDC.n from your Sei EVM wallet to your Keplr wallet.
Go to https://app.sei.io/ and link your Cosmos wallet to retrieve your EVM address.
Option 2: Import the private key from your Sei EVM wallet into Keplr wallet.
Navigate to Skip:Go Bridge.
Visit Skip:Go Bridge, and bridge USDC from Sei-EVM to Noble.
Send USDC from Noble to your desired EVM chain.
Make sure the bridge uses CCTP before confirming the transaction to avoid slippage.
Wait for the bridge process to complete.
Check your destination wallet to ensure the USDC has arrived.
Frequently Asked Questions
Q: Do I have to migrate?
A: Migration is strongly recommended. As Sei transitions to an EVM-only architecture, USDC.n will have fewer use cases and reduced support across the ecosystem. Yei Finance will disable deposits and borrowing for USDC.n on Sep 1, 2025.
Q: Is USDC.n going away?
A: Once Sei completes the SIP-3 transition, Cosmos-native assets will no longer be supported. For more details, see: https://blog.sei.io/sip-3-update-sei-moves-toward-evm-only-architecture.
Summary
USDC is the official stablecoin standard on Sei.
Migrating ensures access to better DeFi opportunities, seamless cross-chain transfers, and long-term ecosystem support.
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