Japan sanctioned seven crypto exchanges and suspended two operators

Japan’s Financial Services Agency imposed administrative actions on seven cryptocurrency exchanges on March 8, 2018, ordering FSHO and Bit Station to suspend exchange business from March 8 through April 7 and directing five other operators to improve their operations.

The coordinated measures were a consequential test of Japan’s exchange-registration framework after the January theft from Coincheck. They showed that registration, or permission to keep operating while an application was pending, did not end supervisory scrutiny. The regulator was examining how exchanges governed themselves, protected customers, managed systems and separated customer assets—not merely whether their websites could process trades.

Two exchanges were ordered to stop

The one-month suspensions applied to FSHO and Bit Station. The FSA’s English institutional summary says both were found, through on-site inspections, to have violated the Payment Services Act principally in relation to user protection.

The underlying Japanese notices add important limits. FSHO was a transitional operator covered by the act’s supplementary provisions, and the regulator cited violations including user-protection requirements. Bit Station had the same transitional status; the FSA cited violations of provisions governing customer-asset management and user-protection measures.

Contemporaneous Reuters reporting attributed a more specific Bit Station finding to the regulator: a senior employee had used customers’ bitcoin for personal purposes, and the company had offered to withdraw its registration application. Reuters also reported that FSHO had not adequately checked large transactions or determined whether suspicious-transaction reports were required. Those specifics are attributable contemporaneous reporting, not wording reproduced in the FSA’s short central notices.

A suspension was not a permanent license revocation. On March 8, the defined order ran through April 7. The event-day record did not establish whether either company would later obtain registration or resume normal service.

Five improvement orders widened the message

Coincheck, Tech Bureau, GMO Coin, Bicrements and Mr. Exchange received business-improvement orders rather than the same one-month shutdown.

The FSA said Coincheck had serious problems in its management and internal-control structures. Tech Bureau lacked effective system-risk management and adequate customer-service systems. GMO Coin lacked an effective system-risk management framework. Bicrements had not conducted internal audits and had problems involving segregation of customer assets and required books and records. Mr. Exchange’s operating structure was judged problematic as its business and roster of supported virtual currencies expanded.

These were not interchangeable allegations. The seven actions formed one supervisory sweep, but the regulator identified operator-specific weaknesses. Nor did every order allege theft, insolvency or market manipulation. The common thread was that rapid growth had outpaced controls expected under the Payment Services Act.

Reuters reported that five of the seven operators were unregistered businesses permitted to continue while applications were reviewed; GMO Coin and Tech Bureau were registered. That distinction mattered institutionally. Japan’s framework had created a transitional population, and March 8 demonstrated that pending status was conditional rather than a safe harbor from enforcement.

Why March 8 mattered

The measures moved Japan’s crypto policy from licensing architecture toward active supervision. For customers, the immediate effect was clearest at FSHO and Bit Station, where exchange operations were ordered halted for a fixed period. For the other businesses, the orders demanded changes to governance, controls or systems without declaring that all activity must cease.

The development also exposed a limit in treating “regulated” as a binary label. A registered venue could still have deficient systems; an application-pending venue could still be operating; and an administrative order could range from remediation to temporary suspension.

No venue-level trading dataset in the cited record isolates the market effect of the March 8 actions. Reuters observed a short-lived bitcoin move, but a continuous global asset traded across many exchanges while other regulatory and bankruptcy-related news was circulating. This reconstruction therefore makes no price, percentage-return, volume or causal market claim.

What is firmly established for March 8, 2018 is the regulatory action itself: seven named exchanges were sanctioned, two received time-bounded suspensions, and Japan signaled that customer protection and operational controls would be tested in practice.