Coinone Review 2027: Fees, Volume and Safety

Coinone was founded in 2014 by Cha Myung-hun, a well-known white-hat hacker, who still leads the company. It was among the first Korean exchanges and has always emphasised security and technology. The game company Com2uS Holdings became a major shareholder in 2021 and 2022.

In terms of volume Coinone has long held a single-digit share of the Korean market. That makes it a distant third, though well ahead of the remaining two won exchanges. The company opened one of the first physical customer centres for a crypto exchange in Seoul, a sign of its early focus on service.

Korean law requires each exchange to partner with a bank that issues real-name accounts to its customers. In November 2022 Coinone switched from a traditional agricultural bank to KakaoBank, the mobile bank used by a large part of the Korean population, especially younger people.

The change made opening an account far easier. A customer who already banks with KakaoBank can link the account in minutes on a phone. Coinone's user numbers rose after the move, though its share of trading volume has remained modest.

To use the won market, you need a KakaoBank account in your own name, Korean identification and a domestic phone number.

• Won-quoted spot trading in a few hundred coins.
• A simple and a professional trading screen.
• Staking services, branded Coinone Plus, with daily rewards on supported coins and flexible withdrawal.
• Recurring purchase tools for regular investing.
• An API for automated trading.

There are no futures or margin products, as domestic exchanges may not offer crypto derivatives to retail investors.

Staking has been one of Coinone's distinguishing features. Rewards come from the networks of the coins involved, and the exchange keeps a commission. Korean regulators have reviewed deposit-style and staking products at exchanges, so the range of supported assets can change.

In 2023 Korean prosecutors charged former Coinone employees responsible for listings, together with brokers, with taking bribes worth billions of won in return for listing certain tokens on the exchange. Courts handed down prison sentences. The investigation showed that dozens of coins had been listed in exchange for payments and that some were then manipulated by market makers.

The case drew particular attention because one of the tokens involved was linked to a notorious kidnapping and murder in Seoul that arose from a dispute over investment losses.

Coinone dismissed the employees, apologised, announced a full review of the affected listings and tightened its procedures, including a channel for reporting misconduct. The industry's joint body later adopted common listing standards for all won exchanges.

The episode matters to investors for a general reason. A listing on a regulated exchange is not a judgment on a token's quality. Small tokens can be listed for poor reasons and pumped by insiders. The warning labels and review notices that Korean exchanges now publish deserve attention.

Registration is done in the app. You verify your identity with your Korean ID and mobile phone, link your KakaoBank real-name account and complete a customer risk assessment. Non-residents cannot use the service.

Crypto deposits and withdrawals are subject to the travel rule. Transfers above the threshold can be sent only to approved exchanges or to personal wallets that you have registered and verified.

Customer support is available by chat, phone and at the physical centre.

Strengths:

• Easy onboarding through KakaoBank.
• A clean, well-designed app.
• Flexible staking services.
• A sound security history.

Weaknesses:

• Higher standard fee than the leaders.
• Thinner liquidity in most coins.
• The legacy of the listing bribery case.
• Spot trading only, for Korean residents only.

Coinone suits Korean residents who already use KakaoBank and want a simple way to start, and investors who value its staking service. Some traders use it for coins that are not listed on Upbit or Bithumb, or to take advantage of price differences between exchanges.

For active trading in major coins, the two larger exchanges offer better prices and lower fees.

Upbit handles well over half of Korean volume and has the deepest books. Bithumb is the clear second and competes on fees and listings. Coinone trails both in liquidity. Its advantages lie in onboarding, design and staking. Many Korean investors keep a main account at one of the leaders and a secondary account at Coinone.

The dominance of the top two has been a topic of debate among Korean policymakers, who worry about concentration. Smaller exchanges such as Coinone have argued for rules that would level the field, for example by allowing a customer to use more than one bank.

• Compare prices across exchanges before large trades.
• Be cautious with tokens under investment warning or listed on a single domestic exchange.
• Read the terms of staking, including how quickly you can withdraw.
• Register your personal wallet in advance if you plan to move coins off the exchange.
• Keep records for tax purposes, as taxation of crypto gains has been scheduled and postponed more than once.

Given the events of 2023, a short guide to checking a token is in order.

• Look at where else it trades. A token listed on only one exchange in the world depends entirely on that venue.
• Check circulating supply against total supply. Large locked allocations may be released later and sold.
• See who the market makers are, if disclosed, and whether volume looks organic.
• Read the exchange's own disclosure page for the token, which Korean rules now require.
• Be wary of sudden price surges on no news.

None of this needs special tools, and ten minutes of checking can prevent an expensive mistake.