Japan’s Bitbank blocks Polymarket-linked transactions as Turkey, Vietnam, Slovakia, and others tighten gambling enforcement

This week’s roundup is less about a single policy shift than about the operational reality high-risk payment teams keep running into: exchanges, betting brands, and streaming platforms are getting squeezed from different sides, and the restrictions are hitting payments, traffic, and licensing at the same time.

1. Japanese crypto exchange Bitbank has banned transactions related to Polymarket. For PSPs and crypto payment flows, that is the practical signal: once an exchange decides to block a specific trading or funding path, the payment side has to treat it as a live restriction, not a theoretical compliance note.
2. MyStake, Goldenbet, and Donbet were temporarily left without slots after suppliers walked away. On paper that is a content issue; in practice it is an acquiring and retention problem, because a casino with missing game inventory does not behave like a healthy merchant for long.
3. Turkey detained 293 people in a large operation against unlicensed iGaming. That matters for anyone processing into or around the market: enforcement there is not limited to fines or warnings, and the scale of the operation suggests authorities are looking beyond isolated operators.
4. Vietnam stepped up action against pirate streaming platforms that illegally broadcast matches and funnel users to offshore gambling sites. For payment providers, the useful takeaway is that traffic acquisition and payment exposure are linked; if the front end is under pressure, the back end usually follows.
5. France became the main World Cup favorite on prediction markets, with betting volume on its win on Polymarket already reaching $55.8 million. That kind of concentration is exactly why these markets matter to high-risk operators: they can create very visible bursts of activity around a single event and a single jurisdiction.
6. PlayCity revoked the license of Casino.ua over possible links to Russia. When a regulator moves on ownership or control concerns, the payment implications are immediate: counterparties, settlement, and bank relationships all tend to get rechecked at the same time.
7. Slovakia’s gambling regulator, ÚRHH, announced strict controls on betting and casino advertising during the World Cup. For PSPs and operators, this is another reminder that event-driven marketing can become a compliance problem very quickly, even when the product itself stays live.

The pattern here is familiar enough: markets are not just regulating licensed gambling; they are also targeting adjacent rails — prediction markets, streaming funnels, offshore references, and advertising. For high-risk payment teams, that means more merchant monitoring, more jurisdiction-specific screening, and fewer assumptions that one country’s rules can be copied into another.