Bitbank warns users of account suspensions for Polymarket-linked transfers in Japan

Japanese cryptocurrency exchange Bitbank published a compliance notice on June 15 warning users that transactions linked to Polymarket could trigger account suspensions or restrictions. The exchange cited Japan's gambling laws as the basis for the policy, marking one of the first instances of a regulated exchange explicitly screening for prediction-market activity. Bitbank did not specify how it would identify Polymarket-linked transfers or whether the restrictions apply to deposits, withdrawals, or both. The notice targets users accessing prediction market platforms from Japan, flagging such activity as a compliance risk under the exchange's policies.