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Bitbank Warns of Account Suspensions for Transactions Related to Polymarket

Bitbank cautions users about account suspensions tied to transactions with Polymarket, citing local gambling laws as a concern.

Mercation Admin
June 15, 2026 2 min read
Bitbank Warns of Account Suspensions for Transactions Related to Polymarket

Bitbank, a prominent cryptocurrency exchange in Japan, has alerted its users about potential account suspensions resulting from transactions involving Polymarket and similar prediction market platforms. The exchange cautioned that utilizing these services for profit could infringe upon local gambling regulations.

On June 15, Bitbank issued this warning without citing specific regulatory directives, emphasizing that the action stems from its internal compliance protocols designed to meet legal obligations.

Potential Reasons for Account Suspension

Bitbank explained that prediction markets enable users to trade based on future events, such as elections and sports outcomes. However, engaging with these platforms from Japan for financial gain may pose legal challenges, particularly given their operations outside the country.

The exchange highlighted Polymarket as an example of such services that include betting components. In the warning, Bitbank stated,

"If deposits or withdrawals are confirmed from prediction market services or services suspected of such connections, we may take measures to suspend the account,"
urging users to be cautious and avoid illegal activities.

Consequences of Account Suspension

Users who face account suspension will lose access to several functions, including:

  • logging into their accounts;
  • depositing or withdrawing cryptocurrencies;
  • withdrawing Japanese yen;
  • trading crypto assets.

Bitbank also clarified that it will not be responsible for any losses clients might incur due to these suspensions, stating,

"Even if a client suffers losses as a result of account suspension measures, the company bears no responsibility,"
reinforcing its position on compliance.

Polymarket's Regulatory Landscape

Polymarket's documentation indicates that Japan is a restricted jurisdiction for accessing its platform, which is linked to compliance with sanctions, local financial laws, prediction market regulations, and anti-money laundering measures. In May, reports surfaced that Polymarket was considering entering the Japanese market, aiming for regulatory approval by 2030, although stringent local betting laws may hinder these ambitions.

Global Scrutiny of Prediction Markets

Bitbank's warning coincides with heightened scrutiny of prediction markets worldwide. Earlier this year, Portugal's regulator ordered Polymarket to halt operations following significant betting activity during the presidential elections. Similarly, Spain temporarily suspended the platform for lacking gambling licenses, and Indonesia enacted comparable restrictions at that time.

In May, Polymarket's Vice President of Software Development, Josh Stevens, dismissed speculation regarding obligatory verification for all users, indicating the platform's ongoing navigation through regulatory challenges.