South Korean crypto exchange Upbit has added B3 to its Korean won market, giving local traders direct access to the Base-linked token.
Trading was first scheduled for 13:45 KST on May 7, before Upbit moved the start time to 14:00 KST.
B3 is a layer-3 blockchain built on Base, the Ethereum layer-2 network developed with the OP Stack. The Upbit listing gives the token access to one of Asia’s most active retail crypto markets.
Exchange sets early trading limits
Upbit said deposits and withdrawals will only support B3 through the Base network. The exchange also asked users to confirm the contract address before sending funds. Deposits through unsupported networks may face a long refund process.
The exchange placed normal controls on early trading. Buy orders were restricted for about five minutes after launch. Upbit also limited low-price sell orders and restricted non-limit order types for about two hours.
Upbit warned, “If a certain level of liquidity is not secured after the commencement of deposit and withdrawal services, the start of trading support may be postponed.” The notice shows the exchange kept room to adjust trading if market depth was weak.
B3 joins recent Upbit listing wave
The listing comes after several Upbit market additions drove fresh attention to selected tokens. As crypto.news reported yesterday, Dogwifhat rose after Upbit added WIF trading pairs against KRW, $BTC, and $USDT on May 6. The report also noted that new listings can expose traders to fast price swings.
Earlier, crypto.news reported that Centrifuge jumped more than 180% after Upbit announced trading support. Another report said Internet Computer added about $100 million in market value after Upbit opened ICP trading against KRW, $BTC, and $USDT.
These cases show why new KRW pairs draw close market attention. They create direct local currency access and can bring sudden liquidity from South Korean retail traders.
OP Stack link adds market context
B3’s Base and OP Stack link also fits a wider infrastructure trend at Upbit. Crypto.news reported this week that Upbit partnered with Optimism to build GIWA Chain, an Ethereum layer-2 network using the OP Stack.
That report said GIWA Chain will let Upbit run its own infrastructure under Optimism’s self-managed enterprise setup. The exchange will operate its own sequencer, which controls transaction ordering and collects network fees.
The B3 listing is separate from GIWA Chain, but both relate to OP Stack-based blockchain activity. For traders, the listing places B3 inside South Korea’s won market while giving Base-linked layer-3 projects more visibility.
