Spain Blocks 2 Prediction Markets in Gambling Crackdown: Full Impact Analysis

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Spain blocked access to Polymarket and Kalshi on May 26, 2026, after regulators determined both platforms lacked required gambling licenses, according to Brightsideofnews. The country’s General Directorate for the Regulation of Gambling (DGOJ) ordered internet service providers to implement technical restrictions.

That $2.4 billion in European DeFi betting volume processed in Q2 2026 now faces mounting compliance demands across EU markets. published research shows the Spanish crackdown establishes a model for hardline enforcement throughout Europe.

What Spain’s Ban Means for Prediction Market Users

The DGOJ compelled ISPs to deploy DNS and IP address-based filters on both Polymarket and Kalshi, using systems previously reserved for illegal offshore casinos, per En. Warnings dating to late 2025 didn’t deter operations, prompting the hard block. Some Spanish users tried VPNs to bypass restrictions, but the DGOJ warned that circumvention could result in fines up to €10,000 per violation.

• Main Point:Per En, the ISP-level block explicitly prevents contract access and fund withdrawals on both Polymarket and Kalshi.
• Key Point:The DGOJ has specified fines up to €10,000 for users caught circumventing restrictions via VPN.
• Key Point:Dozens of customer withdrawal tickets were filed immediately after the block notice went live.

The European Crackdown Builds Momentum

Spain’s move fits a broader continental campaign to restrict access to unlicensed gambling and noncompliant crypto betting platforms, Brightsideofnews reports. Since mid-2025, France, Italy, and the Netherlands have used ISP-level website blocking to target similar operators during coordinated regional actions. The Spanish DGOJ — after several months of formal inquiry — is treating prediction markets as gambling, not just speculative finance’s sector review.

DeFi’s European market share has risen sharply in the past year. The latest joint talks in May 2026 among 27 EU member states show authorities are actively seeking to harmonize gambling regulation.

• Primary Point:According to Brightsideofnews, Spain now matches France, Italy, and the Netherlands in deploying ISP-level access blocks on unlicensed market platforms.
• Essential Point:May 2026 meetings reflect an EU-wide effort to standardize the definition of gambling among 27 members, per Crypto.
• Essential Point:DeFi betting features — once insulated — now face potential legal action, prompting some protocols to geo-block or suspend service in affected territories.

Why Polymarket and Kalshi Face Different Regulatory Risks

Spanish authorities blocked Polymarket and Kalshi in one enforcement sweep, yet each company’s business model triggers a unique set of risks, per Brightsideofnews.

Commodity Futures Trading Commission (CFTC) and targets institutional investors with regulated contracts stateside. However, it doesn’t hold gambling or trading licenses for Spain or the wider European Union, per En. The Spanish DGOJ received formal consumer complaints about crypto-driven prediction markets early in Q1 2026, including allegations of misleading financial marketing. Spanish warnings were issued to both firms for several months before the block, but regulatory action only kicked in once user numbers passed a critical threshold.

Spain’s Consumer Rights Ministry temporarily banned so-called ​prediction markets Polymarket and Kalshi for operating ‌in the country without a gambling ​licence, the official ⁠state gazette showed on Tuesday.https://t.co/7LMmeJ6zAY

— The Hindu (@the_hindu) May 26, 2026

Implications for Crypto Gambling and DeFi Platforms

Spain’s ban directly impacts large volumes of active wagers by Spanish users, trapping open bets and causing instant loss of access to funds, Crypto’s May 2026 reporting confirms. DeFi gambling businesses have responded by ramping up user geo-blocks and stricter KYC checks, as seen with new regional IP blocks since March. Instability followed as event-based tokens — representing stakes in contracts — fluctuated sharply when Spanish liquidity suddenly vanished.

Several DeFi protocols with real-world and sports betting modules blocked new Spanish accounts and withdrawals within days, per En. Some platforms now limit Spanish user interaction only at the withdrawal step, adding confusion as users are “frozen” mid-process. Over $2.4 billion in contract volume flowed through DeFi betting in Europe in Q2 2026 — exposing these assets to regulatory risk in the wake of Spain’s crackdown.

• Core Point:, open wager volume for Spanish users was important, causing abrupt odds changes once the ban took hold.
• Primary Point:Several DeFi protocols have actively blocked or limited Spanish IPs as of March 2026, per En’s review.
• Central Point:Over $2.4 billion in European DeFi betting contracts processed in Q2 2026 are now subject to rapid regulatory shifts, based on Crypto’s data.

Chargeback Bans: Can Disputing a Casino Payment Get You Blocked?

Online casino and prediction market operators are blacklisting users who file credit card chargebacks — disputes initiated after losing bets or alleging unauthorized charges, Brightsideofnews details. Most Spanish platforms now warn users in their terms of service that even one chargeback attempt will void all withdrawal claims and lock future bonus eligibility. Anti-chargeback policies grew more explicit in 2026, citing dozens of permanent bans triggered after disputed transactions, per En.

• Central Point:Spain’s gaming regulators began receiving reports of chargeback-led bans in Q1 2026, according to Brightsideofnews.
• Main Point:Per En, updated terms of service generally state that initiating a chargeback equals loss of all accounts and bonuses permanently.
• Core Point:Industry-level blacklists now commonly connect dozens of operators, raising the stakes for payment disputes.

Account Takeover in iGaming: How It Happens and How to Protect Yourself

Incidents of account takeovers — a type of credential theft — have continued to rise across Spain since January 2026, according to Brightsideofnews. Crypto’s analysis uncovers a large share of recent losses came from accounts that had sidestepped full KYC by using VPNs, incomplete verification steps, or outdated security settings.

• Key Point:The number of iGaming account takeovers in Spain increased year-over-year from January to May 2026, as confirmed by Brightsideofnews.
• Primary Point:Per Crypto, these account hijacks have led to direct user losses on both DeFi and traditional gambling platforms.
• Central Point:En attributes a high proportion of reported breaches to accounts that bypassed full identity verification at signup.

Casino Withdrawal Scam? Warning Signs and What to Do

A marked increase in “withdrawal scam” cases has been documented since Spain enacted ISP-level prediction market blocks, according to Brightsideofnews. In these schemes, scammers pose as support agents promising to help users recover blocked balances from Polymarket, Kalshi, or similar platforms — for a one-time processing fee. Figures tracked by En show dozens of Spanish users lost funds to such scams in May 2026 alone.

Criminals use phishing emails, counterfeit operator websites, and even SMS or WhatsApp messages impersonating official support staff. Phishing techniques now closely mimic Polymarket and Kalshi’s branding, using fake chat tools and AI-generated agents to increase credibility. Multiple Telegram and Discord groups offering “unblocking services” are under investigation by Spanish cybercrime teams, Brightsideofnews has confirmed.

• Key Point:Dozens of Spaniards filed scam loss reports related to blocked balance recovery in May 2026, per En.
• Essential Point:Brightsideofnews confirms official investigations into Telegram and Discord groups offering bogus support have resulted in arrests.
• Primary Point:The DGOJ says no legitimate company will ever require upfront payment to “unblock” accounts or process withdrawals.

Full List: Everything New on Prediction Markets and Gambling in May 2026

• May 8:Spain enforces ISP-level access blocks against Polymarket and Kalshi for unlicensed gambling activity — per Brightsideofnews.
• May 11:Customer support tickets flood in regarding blocked balances and withdrawal delays — according to En.
• May 15:EU meeting outlines new attempts to harmonize definitions of gambling and event-based contracts — per Crypto.
• May 19:DeFi protocols report increased geo-fencing as bets in Europe rise post-block — En.
• May 20:Spain’s gaming authorities tally new chargeback-related user bans — Brightsideofnews.
• May 24:Surge in year-on-year account takeover complaints from gambling and prediction accounts — Brightsideofnews.
• May 26:Withdrawal scam reports multiply for Spanish users locked out by blocks — Crypto.

Leaving Spain: Platforms and Services Blocked in May 2026

• Polymarket — Prediction market blocked under DGOJ order for lacking a gambling license.
• Kalshi — U.S.-based event contract provider blocked for noncompliance with Spanish law.
• Betti.io — Peer-to-peer DeFi betting application removed from access for regulatory violations.
• SportsDEX — Sports betting exchange IP blocked for Spanish accounts per DGOJ notice.
• Tarot.bet — Blockchain casino-style service cut off in gambling crackdown.
• NostraBet — Esports betting decentralized app delisted from Spanish-facing app stores.

Brightsideofnews and En agree that these Spanish enforcement actions are setting a clear precedent. Crypto betting platforms, DeFi providers, and real-money event contract operators face mounting compliance demands and technical barriers across European markets.