Cosmos SDK (Deprecated)

IBC is disabled on Sei in both directions Proposal #121 passed on July 31, 2026 and disabled outbound IBC transfers. Inbound IBC was already disabled by Proposal #116 and Proposal #120. No asset can be bridged into or out of Sei over IBC. If you hold USDC.n (USDC via Noble), USDT.kava (Kava USDT), ATOM, WBTC, or any other IBC asset on Sei, it can no longer be redeemed on its origin chain. The balance still exists on Sei and can still be transferred within Sei. See the SIP-03 Migration Guide for what changed, the full list of affected assets, and what remains possible.

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Cosmos-SDK

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Deprecation NoticeCosmos SDK and CosmWasm functionality is being deprecated in favor of EVM-only. For more details, see SIP-3 and Proposal 99.In addition, Proposal 115 disables CosmWasm code uploads (MsgStoreCode) and contract instantiations (MsgInstantiateContract) chain-wide. No new CosmWasm contracts can be deployed; only execute and query against pre-existing contracts remain available via the CosmWasm precompile.IBC is now disabled in both directions. Proposal 116 and Proposal 120 set the ibc module’s InboundEnabled parameter to false, and Proposal 121 set OutboundEnabled to false on July 31, 2026. No asset can be bridged into or out of Sei over IBC, and IBC assets already on Sei can no longer be redeemed on their origin chain. See the SIP-03 Migration Guide for the full explanation and the list of affected assets.

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