Coinfello launched March 30 at EthCC in Cannes, positioning itself as a self-sovereign AI agent platform built to automate on-chain actions while users keep custody of wallets and private keys. The web app uses delegated, user-defined permissions, human-readable transaction reviews, and smart accounts for automation, and it integrates with Metamask and other EVM wallets. Company executives say the product is aimed at retail users and developers now, with expectations for institutional adoption later.

Ripple Prime has expanded its Hyperliquid integration to support on-chain perpetual contracts for traditional commodities, enabling institutions to trade gold, silver, and oil-linked derivatives on-chain. The update adds support for "HIP-3 symbols" and follows Ripple Prime's initial Hyperliquid integration in February 2026.

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.