Action required: IBC assets on Sei will become inaccessible If you hold USDC.n (USDC via Noble), USDT.kava (Kava USDT), Wormhole-bridged tokens, or any other IBC asset on Sei, you must swap, migrate, or bridge out before the governance proposal to disable inbound/outbound IBC transfers passes and is activated to avoid permanent loss of access. After this, Sei will no longer support IBC bridging of assets from Cosmos-based chains to and from Sei Network. Consult the SIP-03 Migration Guide for the full list of affected assets, required actions, and supported routes. For USDC.n specifically, see: Holders of USDC.n Need to Swap or Migrate.
This page documents Sei’s EVM feature support. Each row shows whether a capability works as on standard Ethereum, behaves differently in a documented way, or is not available on Sei.Standard EVM tooling — viem, wagmi, ethers, Foundry, Hardhat — works on Sei for all rows marked Supported. Where Sei differs from Ethereum, the difference is noted so you can account for it in your application.
These capabilities are Sei-specific and have no standard Ethereum equivalent. They are exposed through @sei-js packages layered on top of standard EVM tooling.
Feature
Notes
Sei precompiles (staking, governance, distribution, oracle, P256, JSON, CosmWasm bridge)
EVM contracts at deterministic addresses. ABIs and contract addresses are exported from @sei-js/precompiles for use with any standard EVM library.
Returns IAVL tree proofs, not Ethereum Merkle Patricia Trie proofs. The method itself works, but the proof format is incompatible with standard Ethereum MPT verifiers. See State Proofs.
