SIP-03: Sei Address Association
After the SIP-03 upgrade, native Cosmos addresses sei1... will stop working. To keep access to your 
SEI funds and stake, you need to associate your EVM address 0x... with the matching Cosmos address on-chain.
The Sei team provides an end-to-end migration helper at dashboard.sei.io/evm-upgrade — try it first if you prefer a one-click flow that works with most wallets.
SEI onlyThis page only handles association for the native SEI token. For USDC
, USDT
, ATOM, WBTC and other IBC-bridged assets, follow the official Sei migration guide — each token has its own bridge / swap route.
- Step 2Gas + association
- Step 3Transfer from Cosmos
Connect your EVM wallet
Use the same wallet that should receive the tokens after association. Any EVM wallet with an injected provider works: MetaMask, Compass, Rabby, Tangem, Trust Wallet, OKX, etc.
MetaMask
Keplr
Rabbyand most other walletsSei is moving from a Cosmos stack to a pure EVM (SIP-03). After the upgrade, native Cosmos addresses sei1... and Cosmos transactions will stop working. To preserve access to funds, you need to perform a one-time on-chain association linking your EVM address 0x... with the matching Cosmos address sei1.... Any outgoing EVM transaction triggers this — the protocol publishes the pubkey and registers the link automatically.
Details: docs.sei.io/learn/sip-03-migration