Bitbank warns Polymarket-linked transfers may trigger account suspensions in Japan
Japan’s Bitbank said it may restrict accounts that make deposits or withdrawals tied to prediction market services, including Polymarket. The exchange linked the risk to Japan’s gambling laws and “potential conflicts,” saying Polymarket-linked activity could be treated as gambling when used for financial gain.
Bitbank noted that affected users could lose access to key functions: account logins, crypto deposits and withdrawals, yen withdrawals, and trading. It also said it would not be liable for damages caused by any suspension.
The notice did not cite a specific government order. However, it signals rising compliance concerns as Japan has not issued clear guidance on prediction markets. It follows broader scrutiny of Polymarket, including reports of it being restricted in Japan’s access policy and ongoing regulatory focus in South Korea and the US.
For traders, the key impact is operational friction for Japan-based participants: Bitbank may limit or suspend Polymarket-related transfers. This can reduce liquidity and add short-term volatility around prediction-market narratives and related meme sentiment.
Neutral
Bitbank’s warning is more about operational access risk than direct token-level fundamentals. In the short term, Polymarket-linked flows to and from Bitbank could face account restrictions, which may reduce liquidity into Japan-based prediction-market activity and create temporary volatility around related narratives.
However, the event does not clearly target a specific crypto asset or trigger a broad market repricing. With no cited government directive and no explicit new Japanese guidance, traders are more likely to treat it as exchange-by-exchange compliance friction. Over the longer term, sentiment impact depends on whether other venues follow Bitbank’s approach and whether regulators issue clearer rules. Net effect on prices of the mentioned cryptocurrencies is therefore likely limited, keeping the overall impact neutral.