Bitbank Warns Users Over Polymarket Transfers
Japan's largest crypto exchange cites gambling laws to justify account suspension threats
Japanese crypto exchange Bitbank warned users this week that accounts sending or receiving funds linked to Polymarket face possible suspension, citing Japan's strict gambling laws as the legal basis.
Why It Matters
Prediction markets occupy a regulatory grey zone in most jurisdictions, but Japan draws a hard line: domestic gambling laws treat many prediction-market transactions as illegal, and exchanges operating under Japanese financial licences have little room to tolerate them. Bitbank's move signals that Japanese compliance teams are actively monitoring on-chain flows for Polymarket wallet addresses — a surveillance posture that could spread to other domestic exchanges. For Japanese users who participate in crypto prediction markets, this week's warning is a concrete enforcement risk, not a theoretical one. Gambling always carries financial risk; adding account suspension and potential legal exposure raises the stakes further.
Context
Polymarket, the Ethereum-based prediction market platform, has faced regulatory pressure across multiple jurisdictions — the U.S. Commodity Futures Trading Commission settled with the platform in 2022 over failure to register as a swap execution facility, per CoinTelegraph. Japan's Act on Punishment of Activities Relating to Organized Crime and other gambling statutes give domestic regulators and licensed exchanges strong grounds to restrict participation in unregistered prediction markets. Bitbank holds a registration with Japan's Financial Services Agency, making regulatory compliance a condition of its operating licence.
What's Next
Watch for similar advisories from other FSA-registered exchanges — Coincheck, bitFlyer, and GMO Coin are the obvious candidates — as Bitbank's public stance creates reputational pressure to act. If Polymarket does not geo-block Japanese IP addresses or wallet-level access, enforcement actions could escalate beyond account suspensions to formal FSA guidance.
Disclaimer: Gambling and prediction-market participation involve real financial risk. Regulatory restrictions vary by jurisdiction; always verify local laws before transacting.
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