AgentCypher has launched Joker King, an autonomous AI-agent card battle game on Neo X with a US $25,000 seasonal prize pool paid out across multiple cycles. The first cycle runs from March 26 to April 3 and includes a US $5,000 pool, while matches are settled on-chain via smart contracts without human involvement during gameplay.

US authorities unsealed an indictment accusing Maryland resident Jonathan Spalletta of hacking Uranium Finance in April 2021 and stealing more than $54 million across two exploits. Prosecutors allege some of the funds were later used to buy collectibles such as Pokémon cards, antique Roman coins and fabric from the Wright brothers' plane, and say he faces charges that carry up to 30 years in prison.

Washington Attorney General Nick Brown filed a civil lawsuit against KalshiEx LLC this week in King County Superior Court, arguing the platform's event contracts qualify as illegal gambling under state law. The complaint focuses on binary contracts priced from $0.01 to $0.99 that pay $1 to winners and $0 to losers, and seeks an injunction, restitution, disgorgement, and per-violation civil penalties.

Bitdeer said its Norway unit has signed a build contract with Data Center Installations AS to convert the Tydal facility into a 180 MW AI co-location data center, with completion targeted for December 2026. The project is designed around Nvidia’s Vera Rubin GPU architecture and will use 100% carbon-free hydro power, immersion cooling, and heat reuse for nearby food production.

Aave Labs launched Aave V4 on Ethereum on March 30, 2026, introducing a modular "hub-and-spoke" design that centralizes liquidity while enabling separate spoke markets with distinct risk settings. The update aims to broaden supported collateral by containing insolvency risk within individual hubs, and new spoke deployments will initially be gated through DAO governance before any potential move toward permissionless creation.

On March 30 in Washington, a Chainalysis report said crypto transactions connected to buying low-cost military drones and parts can be traced across public blockchains. The analysis linked payments of $2,200 to $3,500 to specific drone-related listings on e-commerce platforms and noted pro-Russia groups have raised more than $8.3 million in crypto donations since 2022, while describing crypto as a secondary channel versus conventional payments.

On 30 March 2026, Universal Digital's USDU began trading on Crypto.com after being registered with the Central Bank of the UAE as a Foreign Payment Token. The USD-backed stablecoin operates under ADGM's FSRA licensing and CBUAE registration and is limited to institutional and professional users, not retail. USDU is an ERC-20 on Ethereum backed 1:1 by US dollar reserves held at Emirates NBD and Mashreq, with monthly attestations; as of late March 2026 its market cap was between $97.5 million and $98.8 million.

Canada's federal government introduced Bill C-25 on March 26, a proposal that would ban cryptocurrency donations across the political system as part of a wider election reform package. The measure would bar crypto contributions to parties, candidates, riding associations, leadership contestants, and third-party advertisers, citing traceability and foreign-interference risks. The bill has passed first reading and still needs to clear additional legislative steps to become law.