South Korea’s dominant crypto exchange Upbit added BTC and USDT trading pairs Friday for four tokens already on its Korean won market — ETHGas (GWEI), Biconomy (BICO), Bubblemaps (BMT), and Nillion (NIL) — triggering immediate price and volume spikes that illustrated the outsized market weight Upbit’s structural decisions continue to carry.

Trading for all eight new pairs went live at 16:00 Korea Standard Time (4:00 AM ET) after a three-hour postponement from the originally scheduled 13:00 KST (midnight ET) open. GWEI posted the sharpest gain among the four — up 11.75% on global exchanges following the announcement — while BICO climbed 7.35%, BMT rose 7.48%, and NIL added 5.11%.

What Today’s Expansion Actually Is

Before reading the price reaction as a signal about these tokens specifically, the mechanics matter. Friday’s event was not a first-time Upbit debut for any of the four assets. BICO, BMT, NIL, and GWEI already traded against the Korean won on Upbit’s KRW market. What Upbit added Friday were BTC and USDT pairs — eight new trading routes that open global crypto liquidity rather than to domestic fiat alone.

The distinction is consequential. A KRW-only listing makes a token accessible to South Korean retail investors trading in their domestic currency but creates limited surface area for international arbitrage. Adding BTC and USDT pairs integrates those tokens into the global order flow and makes it much easier for international traders to exploit any price gap between Upbit and other venues — a gap that frequently opens when Korean retail demand drives KRW prices above global equivalents.

The full roster of new pairs: BICO/BTC, BICO/USDT, BMT/BTC, BMT/USDT, NIL/BTC, NIL/USDT, GWEI/BTC, and GWEI/USDT. For deposits, BICO, NIL, and GWEI run on the Ethereum network; BMT runs on Solana. Upbit did not add KRW pairs for any of the four — meaning Korean fiat-to-token entry already existed, and Friday’s addition was strictly about deepening international liquidity.

A Deliberate 2026 Expansion Strategy

Friday’s additions are the latest installment in a pattern Upbit has been running throughout 2026. The exchange added BTC and USDT pairs for CFX in July 2026, did the same for CAP earlier in August, and has now extended the same treatment to four more tokens in a single batch. Read alongside the other listings, the cadence looks less like opportunistic expansion and more like a systematic effort to upgrade the international trading infrastructure around assets already in Upbit’s KRW ecosystem.

That framing matters because it places Friday’s price spikes in a different context than a standard first-listing pump. When a token receives its first listing on a major exchange, demand is genuinely new — the listing creates access that did not previously exist. When Upbit adds BTC and USDT pairs to a KRW-listed token, demand from Korean retail is already present; the new pairs primarily create arbitrage routes and open the asset to global market makers. The price response is real — GWEI’s 24-hour trading volume rose 197.7% to $11.1 million, BICO reached $34.5 million in volume (up 46.7%), BMT hit $12 million (+25.7%), and NIL reached $14.6 million (+21.4%) — but its structural cause is liquidity internationalization rather than purely new speculative interest.

What These Four Projects Actually Do

Upbit’s selection spans a cross-section of Ethereum infrastructure — which matters both for understanding the fundamentals and for correcting a significant error in early coverage of this listing event.

Biconomy (BICO) provides the middleware that makes decentralized applications usable without forcing users to hold ETH for gas fees. Its core product is ERC-4337 account abstraction infrastructure: specifically, the paymaster and bundler components of the standard that Vitalik Buterin and co-authors proposed in 2021 and deployed on Ethereum mainnet in March 2023. When a user interacts with a dApp built on Biconomy’s stack, their request is packaged as a “UserOperation,” routed through Biconomy’s off-chain relayer and bundler, and validated against a paymaster contract that covers the gas cost on their behalf. The dApp developer pays Biconomy; the end user sees a gasless experience. The practical effect is friction-free onboarding — no ETH required, no failed transactions from insufficient gas — which matters most during the onboarding phase where user attrition is highest.

Bubblemaps (BMT) is an on-chain analytics and data visualization platform. Its primary product maps token supply distribution — reading publicly available wallet balances and transaction histories from blockchain nodes, then clustering wallets by shared transaction patterns (same exchange deposit address, same funding source, or direct wallet-to-wallet connections). The output is an interactive bubble visualization that shows what percentage of a token’s supply sits in connected clusters, enabling analysts to identify concentrated insider wallets, whale accumulation, or coordinated distribution schemes before they become apparent in price. Bubblemaps has been used to investigate insider trading allegations on the Polymarket prediction platform. The company was founded in 2022 in Levallois-Perret, France, and raised $3.2 million in seed funding.

Nillion (NIL) operates what it calls the world’s first “Blind Computer” — a decentralized network designed to process sensitive data without exposing it to any single party. The underlying mechanism combines multi-party computation (MPC) and fully homomorphic encryption (FHE): data is split into fragments using a Linear Secret Sharing Scheme (LSSS) and distributed across separate nodes; each node computes on its own fragment without being able to reconstruct the original data; results are reassembled only after computation completes. The network runs on a dual-architecture: NilChain handles coordination and consensus; Petnet orchestrates the privacy-preserving computation layer. In January 2026, Nillion launched “Nillion 2.0,” migrating to an Ethereum-integrated architecture from a Cosmos-based Layer 1 and introducing “Blacklight,” a community verification layer that requires node operators to stake 70,000 NIL. By the time of Friday’s listing, over 111,000 users were running applications on the Blind Computer, with more than 636 million documents stored and 1.4 million inference examples logged on mainnet.

ETHGas (GWEI) is a blockspace infrastructure protocol, not a liquid staking product. This matters because some initial coverage of Friday’s Upbit listing misidentified GWEI as “Ether.fi Staked Gwei” — a liquid staking token tied to the Ether.fi protocol. That description is factually wrong: GWEI is the governance token of ETHGas, a separate project with a different technical focus and no connection to Ether.fi.

What ETHGas actually builds is infrastructure for making Ethereum blockspace predictable and tradeable. Under the current mempool model, every user and protocol competes blindly to get transactions included in the next block, with fees spiking sharply during congestion. ETHGas turns blockspace into a tradeable asset: validators and builders pre-commit to including specific transactions, creating a form of blockspace futures that eliminates the uncertainty of mempool auctions. GWEI token holders stake their tokens for veGWEI (vote-escrowed GWEI) and vote on protocol parameters, treasury decisions, and smart contract upgrades. Longer staking lockups confer proportionally more voting power. ETHGas launched the GWEI token generation event in late January 2026.

Does the Upbit Effect Still Move Markets?

The volume data from Friday confirms that Upbit’s structural decisions — even for pair additions rather than fresh listings — retain the capacity to move tokens across global markets. GWEI’s nearly 200% volume spike is the clearest example: a token whose trading was previously confined to Korean won now attracted $11.1 million in 24-hour volume on international pairs within hours of the announcement.

That said, the history of Upbit listing-day moves should calibrate expectations. Research from late 2025 documented a consistent pattern in that cycle: announcement triggers a sharp price spike, trading volume floods in over the first 24 to 48 hours, and then the market retreats — often fully — once the initial speculative wave clears. The June 2026 nine-token Upbit rollout showed the same divergence: PEAQ rose 21.9% while GRAM fell 2.75%; the reaction was selective, not uniform. The most recent six-token batch from early August 2026 showed the same bifurcation: one token surged while another fell sharply, forcing Upbit to cut its minimum sell price before launch — a concrete illustration that listing proximity to the Upbit brand carries no guarantee of positive price action.

Tokens that consolidate above their pre-listing price tend to have active development pipelines, growing user bases, and use cases that generate organic demand beyond exchange-driven speculation. By that measure, the four projects listed Friday occupy different positions: Biconomy’s ERC-4337 infrastructure is directly on Ethereum’s roadmap for mainstream dApp onboarding; Nillion’s Blind Computer has verifiable on-chain traction with over 111,000 users; Bubblemaps has built a genuine practitioner audience among on-chain analysts; ETHGas is earlier-stage, making a bet on a future Ethereum congestion cycle that validates demand for blockspace commitments.

Is There a Question Readers Should Also Ask About Timing

South Korean crypto markets are operating under an unusual constraint heading into the second half of 2026. Finance Minister Koo Yun-cheol confirmed on the floor of the National Assembly’s Finance and Economy Planning Committee in July 2026 that the 22% crypto gains tax — composed of a 20% national levy and a 2% local surcharge — will take effect on January 1, 2027, with no further delay. The tax applies to gains exceeding ₩2.5 million (approximately $1,690 at current exchange rates) annually, which at current Korean retail participation levels would affect most active traders.

That deadline creates a structural incentive for Korean retail holders to evaluate their positions before year-end. For tokens that have gained significantly in the KRW market, the period between now and December 31, 2026 represents a window during which holding decisions will be shaped by tax optimization logic rather than purely by fundamental conviction. Whether Friday’s Upbit BTC/USDT pair expansion for these four tokens affects that calculus — by giving Korean holders better global price discovery and exit liquidity — is the practical question that frames this listing event beyond its listing-day price move.

The People Power Party introduced a crypto tax abolition bill in March 2026, creating legislative uncertainty about whether the deadline will hold. But Finance Minister Koo’s floor statement and the Democratic Party’s position make the January 2027 date the planning assumption for now.

Upbit’s KFI fine from 2025 — ₩35,200,000,000 (approximately $23.8 million at today’s rate of approximately ₩1,477 per dollar) for AML and KYC violations — remains in appeal before Seoul’s Administrative Court, where the business suspension portion was overturned in April 2026; the KFIU is now appealing that reversal. The fine does not affect Upbit’s trading operations or listing authority, but it provides context for understanding that South Korea’s largest crypto venue operates inside a compliance environment that regulators are actively monitoring.

Exchange rate as of August 21, 2026; conversions are approximate.

Frequently Asked Questions

What is the “Upbit effect,” and does it still work?

The “Upbit effect” describes the sharp price and volume spikes that typically follow a Upbit listing announcement, driven by South Korean retail investors — sometimes called “ants” — flooding newly accessible assets. Research from 2025 found the pattern was losing staying power: tokens surge on listing day but frequently give back gains as speculative demand clears without sustained organic buyers. Friday’s session confirmed the mechanism is still active — GWEI volumes nearly tripled and price gained 11.75% — but whether these four tokens hold above their pre-announcement levels depends on fundamental demand, not listing proximity.

How is GWEI (ETHGas) different from liquid staking tokens like Ether.fi’s eETH?

GWEI and Ether.fi’s eETH are entirely different products. GWEI is the governance token of ETHGas, a blockspace infrastructure protocol that aims to make Ethereum transaction execution predictable by turning blockspace into a committable, tradeable asset — a structural alternative to the current mempool auction system. ETHGas has no connection to Ether.fi. Ether.fi’s eETH and weETH are liquid restaking tokens that represent staked ETH and accrue validator rewards. The two tokens have different technical functions, different value drivers, and different risk profiles.

What are the tax implications for South Korean holders trading these tokens on Upbit?

South Korea’s 22% crypto gains tax — 20% national plus 2% local, on annual gains exceeding ₩2.5 million (approximately $1,690) — is scheduled to take effect on January 1, 2027. Under current law, a Korean investor who sells these tokens at a profit on or after that date will owe tax on gains above that threshold. The deadline creates a year-end decision window for holders: gains realized in 2026 calendar year are not taxable; gains realized in 2027 are. The law remains subject to a pending PPP abolition bill, but the current planning assumption is that the January 2027 date holds.

Does Biconomy (BICO) make transactions genuinely free for users?

Biconomy’s account abstraction infrastructure does not make transactions free — it shifts who pays the gas fee. Under the ERC-4337 standard, Biconomy’s paymaster contract covers Ethereum gas costs on behalf of the user, and the dApp developer pays Biconomy for that service. From the user’s perspective, the experience is gasless; from the developer’s perspective, gas is an operational cost built into the dApp’s budget. The key benefit is onboarding friction reduction: users can interact with Ethereum dApps without holding any ETH, which removes one of the most significant barriers to mainstream dApp adoption.

TechTimes does not provide investment advice. The information in this article is for informational purposes only. Cryptocurrency markets are highly volatile; always conduct independent research before making investment decisions.