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Seoul Desk: Upbit Pauses SEI Rails as Korean Won Liquidity Briefly Walls Off From a Network Upgrade HONG KONG — A routine maintenance notice out of Seoul is the kind of operational footnote that nudges Asia-Pacific liquidity desks before it nudges anyone else.
Upbit, the largest cryptocurrency venue in South Korea and one of the deepest won-denominated order books on the planet, said it will pause Sei (SEI) deposits and withdrawals from 09:00 UTC on May 19 to accommodate a scheduled upgrade of the Sei mainnet.
For regional traders, that is the relevant detail.
Korean retail flow into Sei has been one of the more durable bid sources for the high-throughput Layer-1 since its listing cycle began, and the Upbit KRW pair routinely carries a meaningful share of the token's global spot turnover.
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