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

ConfidenceLikelyUpdated2026-07-29Review by2027-01-29Sources7Machine-translatedOriginal (JA)

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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). Its official site emphasizes its status as a listed digital-asset platform (retrieved 2026-05-18); this entry does not validate an exclusivity claim.

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)

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

  • Supported assets: The official closing-price list retrieved on 2026-05-18 showed BTC, ETH, ADA, DAI, and ETC. Availability changes, so this entry does not fix a total or domestic rank.

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 and large lots): The official page retrieved on 2026-05-18 described OTC service for corporate and large-lot clients, multilingual support, and security features. Because pricing and trading conditions can change, the current official page takes precedence.
  • Deposit channel: Bank transfer as described in the official FAQ. Use the live FAQ for other conditions.
  • Smartphone app: Provides an iOS / Android compatible app.

5. Market share & trading volume

  • The OSL Japan corporate and product materials reviewed on 2026-07-29 contain no Japan-subsidiary trading-volume or account-count figures comparable across firms. This entry does not infer a market rank or scale. For the OTC context, see JP crypto market maker / OTC layer.

6. History & major incidents

The table below is based on OSL Japan’s company profile and disclosures, the FSA register, and the FSA’s published administrative action. The June 2024 business-suspension and business-improvement orders were issued to CoinBest before its trade-name change and remain part of the current legal entity’s history. ^[Sources: https://www.osl.com/jp/cms/company; https://www.fsa.go.jp/menkyo/menkyoj/kasoutuka.xlsx; https://www.fsa.go.jp/news/r5/sonota/20240614-2/20240614.html.]

Year/Month Event
2017-08 CoinBest Co., Ltd. established
2020-09-23 Registered by the FSA (Kanto Local Finance Bureau) as a crypto-asset exchange service provider, No. 00023
2024-06-14 The Kanto Local Finance Bureau issued CoinBest a business-suspension order and a business-improvement order
2025-02-06 CoinBest, under OSL Group Limited, renamed to “OSL Japan Co., Ltd.” The corporate site was also unified to osl.com/jp/
2025-11-28 Change of Representative Director. Yang Chao (Wilson Yang) stepped down, and Takashi Yoshikawa became Representative Director and President

Apart from the June 2024 administrative action, this review did not identify public-source material showing a hack or large-scale system failure within the primary sources checked here.

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 ).
  • For the Japanese entity, this entry records only dated official disclosures and does not infer group application counts or undisclosed measures.
  • 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

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