This is a general announcement. Products and services referred to here may not be available in your region.
Dear Clients,
Sei (SEI), Cosmos (ATOM), Polygon (POL), and Base will undergo network upgrades or hard forks. To support these upgrades, XCoin will suspend deposits and withdrawals for all token(s) on the relevant networks according to the schedule below:
| Network | Upgrade Type | Block Height / Time | Estimated Upgrade Time | Deposits & Withdrawals Suspension Time |
| Sei (SEI) | Network Upgrade | Block height 208,377,745 |
Between 2026-05-19 16:00 and 21:30 (UTC), subject to the block height |
2026-05-19 14:00 (UTC) |
| Cosmos (ATOM) | Network Upgrade | Block height 31,201,200 | 2026-05-20 14:45 (UTC) | 2026-05-20 13:00 (UTC) |
| Polygon (POL) | Network Upgrade & Hard Fork | Block height 87,218,600 | 2026-05-21 14:00 (UTC) | 2026-05-21 12:00 (UTC) |
| Base | Network Upgrade & Hard Fork | - | 2026-05-21 18:00 (UTC) | 2026-05-21 16:00 (UTC) |
Please note:
- Trading of token(s) on the aforementioned networks will remain available during the network upgrades and hard forks.
- Deposits and withdrawals for token(s) on the aforementioned networks will be reopened once the upgraded networks are deemed to be stable. No further announcement will be posted.
- The estimated upgrade time for Sei (SEI) may vary significantly. The actual upgrade time shall be subject to the block height of 208,377,745.
- For fund safety, please avoid depositing or withdrawing token(s) on the aforementioned networks during the upgrade period.
For more information, please refer to the Official resources from the project teams: Sei、Cosmos、Polygon、Base.
Thank you for your support to our platform.
XCoin Team
May 19, 2026