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OSL Japan Co., Ltd. — Japan crypto-asset exchange operator overview

Confidence: Likely Updated 2026-05-18 Review by 2026-08-08 Sources 7 Machine-translated Original (JA)
#fintech#jp-crypto-exchange#vasp
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This entry sits under exchanges index. Read it with FSA crypto-asset exchange registration system — number system / Local Finance Bureau jurisdiction / registration requirements for adjacent context and Japan Financial Regulation — Legal Framework for Tokens, Crypto Assets, and Payments for the broader system boundary.

FSA registration number Director-General of the Kanto Local Finance Bureau 第00023号 · JVCEA member #1028 (Type I) · registration date 2020-09-23

1. Corporate entity & shareholders

  • Trade name: OSL Japan Co., Ltd. (former name: CoinBest Co., Ltd.)
  • English notation: OSL Japan Limited
  • Established: 2017年8月25日
  • Head office: Kabutocho No. 2 Heiwa Building 4F, 2-9-8 Nihonbashi Kabutocho, Chuo-ku, Tokyo
  • Capital: 9億3,316万円 (including capital surplus; from the company overview as of 2026-05-18)
  • Corporate number: 3010001185935
  • Parent company: OSL Group Limited (HKEX-listed, ticker 863.HK). The company professes itself to be the only digital-asset trading-platform enterprise listed on the Hong Kong Stock Exchange.

2. Licensing & registration status

  • Crypto-asset exchange business: Director-General of the Kanto Local Finance Bureau 第00023号 (registration date 2020-09-23)
  • JVCEA member: Type I member #1028 (crypto-asset exchange business only)
  • No public record of electronic-payment-instruments business or financial-instruments business could be confirmed (not disclosed)

The Hong Kong parent OSL Group holds Type 1・4・7・9 licenses from the HK SFC as well as AMLO (Anti-Money Laundering and Counter-Terrorist Financing Ordinance) registration, and the Japanese subsidiary functions as one base of the group’s Asia expansion.

3. Handled currencies

  • Number of handled symbols: 5 symbols (confirmed from the 2026-05-18 closing-price list)
  • Symbols: BTC (Bitcoin), ETH (Ethereum), ADA (Cardano), DAI (stablecoin), ETC (Ethereum Classic)
  • Characteristics: The number of symbols is at the lowest level in the industry. It is among the smallest class of the 30 社-plus VASPs in Japan. Handling DAI (a Maker-family stablecoin) is distinctive, and it also offers a dedicated service for large-lot DAI transactions. Altcoins are few.

4. Scope of business

  • Sales counter (principal trading): Offers buying and selling of BTC・ETH・ADA・DAI・ETC. In the closing-price list, the exchange (order-book trading) column is ”-”, and the provision of order-book trading cannot be confirmed.
  • OSL Japan Prime (OTC service for corporates・large lots): A dedicated OTC (Over The Counter) trading service for corporate and large-lot clients. It provides dedicated customer support (Japanese, English, and Chinese), preferential fees based on monthly trading volume, security via IP whitelisting, and expanded withdrawal-limit accommodation.
  • Deposit channels: Bank transfer (see the FAQ for details). Public information on convenience-store deposit and quick deposit cannot be confirmed (not disclosed).
  • Margin trading・derivatives・lending・NFT: No public information on provision.
  • Smartphone app: Provides an iOS / Android compatible app.

5. Market share & trading volume

  • Disclosed trading volume and account numbers cannot be confirmed (not disclosed).
  • Given a composition of 5 handled symbols and a sales counter only, it is positioned as a niche specializing in corporate and large-lot clients rather than mass retail acquisition.
  • The OTC Prime service appeals to scale as a parent group, claiming “cumulative group trading volume of over 1,000 億 US dollars since establishment in 2018 年” (figures for the Japanese subsidiary alone are not disclosed).
  • Competitive positioning: niche (institutional・large-lot focused). Its market segment differs from that of the major domestic spot retail players (bitFlyer, Coincheck, GMO Coin, etc.) (the OTC layer is Domestic crypto-asset market maker / OTC desk industry overview, and Hong Kong SFC VASP licensing regime — VATP regime + licensed CEX overview is the parent’s home-jurisdiction license).

6. History & major incidents

Year/MonthEvent
2017-08-25CoinBest Co., Ltd. established
2020-09-23Obtained crypto-asset exchange operator registration (第00023号) from the Financial Services Agency (Kanto Local Finance Bureau). One of the early cases of a Hong Kong-based group obtaining FSA registration in Japan
2022-08Ran a CoinBest 5 th-anniversary campaign (capital 5 億3,500万円, URL: coinbest.com era)
2023Collaborated on hometown-tax NFT return gifts with Numata City, Gunma Prefecture (in partnership with Furusato Choice)
2025-02-06CoinBest, under OSL Group Limited, renamed to “OSL Japan Co., Ltd.” The corporate site was also unified to osl.com/jp/
2025-02-10Held a Japan-market strategy briefing (announced via PR TIMES)
2025-11-28Change of Representative Director. Yang Chao (Wilson Yang) stepped down, and Takashi Yoshikawa became Representative Director and President
2025-125 th anniversary of starting regulatory-compliant business as the OSL group (group-wide. The Hong Kong SFC license was obtained around 2020-12 )

No public record of administrative dispositions, hacks, or large-scale system failures could be confirmed.

7. Strategic developments

  • OSL Group publicly announced a strategic shift from an “exchange” to a “stablecoin trading and settlement platform” in 2025 年. The Japanese entity has indicated a direction of conforming to this group strategy (from the 5 th-anniversary CEO message of 2025-12 ).
  • Group-wide, it holds or is applying for over 50 licenses in over 10 regions (as of 2025-12 ).
  • No public disclosure of specific new services or capital measures in Japan (as of 2026-05-18) could be confirmed.
  • It continues to post “hometown-tax NFT” terms, and collaboration with the public sector also continues.
  • Representative Director and President: Takashi Yoshikawa (assumed office 2025年11月28日)
  • Former Representative Director and President: Yang Chao (Wilson Yang) (until 2025年11月27日)
  • OSL Group CEO: Kevin Cui (Cui Song) (issued the 5 th-anniversary statement of 2025-12 as group CEO)

Sources