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Robinhood’s CA$250 million, approximately $180 million, acquisition of WonderFi received final regulatory approval. CIRO approved WonderFi subsidiary Coinsquare Capital Markets on May 20. Both companies set June 1 as the expected closing date. WonderFi gives Robinhood regulated Canadian crypto trading, custody, and exchange infrastructure.

Hyperliquid activated mainnet support for outcome markets tied to off-chain events through its HIP-4 upgrade. Validators now deploy and settle those markets through votes on creation and resolution. The first active market, "May CPI year-over-year," had $11,268 in trading volume by the time of reporting.

Swissblock said its Bitcoin risk index reached 33 out of 100, placing Bitcoin in high-risk territory. Glassnode reported that US BTC ETFs have recorded net outflows on nearly every trading day since May 7. Jeff Ko said spot ETF flows have posted more than $2 billion in outflows over the past two weeks.

OKX launched Exchange OS, a platform for user-built crypto markets that OKX said can process up to 300,000 transactions per second. The platform lets users create spot, perpetuals, and outcomes markets with their own assets and governance. Exchange OS is in the first of three planned rollout phases, with broader public opening scheduled for the third quarter of 2026. The first market built on Exchange OS is a predictions-style market for the FIFA World Cup.

The UK FCDO sanctioned Huobi Global SA, which the FCDO suspects of supporting Russia, and Elliptic says linked stablecoin A7A5 has processed over $100 billion since launch in January 2025. The FCDO designation says Huobi made financial services, funds, economic resources, goods, or technology available to A7 LLC and GARANTEX Europe OU. Huobi Global and HTX also face FCA legal proceedings related to unauthorised communication of financial promotions.

Socket disclosed TrapDoor, a supply-chain campaign involving more than 34 malicious packages and over 384 related versions across npm, PyPI, and Crates.io. Socket said the campaign targeted protocol developers and credentials tied to repositories, CI/CD pipelines, cloud accounts, and deployment keys. Socket confirmed credential theft and infrastructure exposure, while on-chain exploits remained an inferred downstream consequence.

Bermuda is scaling an onchain economy plan after a $100 USDC wallet education event and a public payment test. Craig Swan said Bermuda amended legislation to accept digital assets for public taxes, starting with the Department of Motor Vehicles. Bermuda also partnered with Circle, Coinbase and Stellar on treasury accounts, onboarding rails and an official Bermuda digital dollar. Swan said the BMA plans an AI payments hub for autonomous software transactions.

The UK sanctioned Huobi Global S.A., which has rebranded to HTX, on Tuesday over suspected support for the Government of Russia. Garantex Europe OU was also named in a broader sanctions action targeting crypto exchanges, banks, and firms linked to Russia's sanctions evasion. Elliptic said the action marks the first UK use of Regulation 17A against crypto exchanges.