BigONE to Discontinue SEI Mainnet Support and Migrate to EVM Network

Dear BigONE users,

According to the official announcement from the Sei (SEI) project team, support for the SEI native mainnet will be discontinued, and only the EVM network will continue to be supported. To ensure the security of user assets, BigONE will take the following measures:

• BigONE has disabled the deposit service for the SEI mainnet. Assets deposited through the mainnet will not be credited, and may be permanently lost. Please do not attempt to deposit to the SEI mainnet address.
• For users holding SEI mainnet tokens, BigONE will assist in migrating assets to the SEI-EVM network. No action is required on your part during this process.
• Deposits and withdrawals on the SEI EVM network remain unchanged. Please ensure you select the correct network type: SEI-EVM.

Kind Reminder:
1. Please do not deposit to the SEI mainnet address to avoid potential loss of funds.
2. If you have any questions or encounter issues, please contact the BigONE customer service team for assistance.

BigONE, more than just asset security.

Regards,
BigONE Team
12 May 2026