The U.S. Court of Appeals for the 10th Circuit voted 7-3 on Friday to reject Custodia Bank's request for en banc rehearing, leaving in place earlier rulings that the Federal Reserve can deny master account applications. The decision follows a more than five-year effort by the Wyoming crypto-focused bank to obtain a Fed master account and comes shortly after the Kansas City Fed approved Kraken Financial for a limited-purpose crypto master account.

The U.S. Securities and Exchange Commission has filed a joint stipulation in the Southern District of New York to dismiss its civil fraud case against BitClout and DeSo founder Nader Al-Naji with prejudice, permanently barring refiling of the same claims. The SEC had sued Al-Naji in July 2024 over more than $257 million in alleged unregistered BTCLT token sales and accusations that over $7 million of investor funds were used for personal expenses, while a related criminal wire fraud complaint brought by federal prosecutors was previously withdrawn without prejudice.

In a 32-page report dated March 2026, the U.S. Treasury Department told Congress that crypto mixers can facilitate legitimate financial privacy while also posing notable money-laundering risks. The report disclosed that since May 2020, over $1.6 billion in deposits from mixing services have moved into crypto bridges, with more than $900 million tied to one bridge associated with North Korean laundering activity. Treasury further recommended a digital asset-specific "hold law" to let institutions temporarily freeze suspicious funds and called on lawmakers to clarify which DeFi participants should bear AML and CFT responsibilities.

An experimental AI agent named ROME, created by research teams linked to Alibaba and based on the Qwen3-MoE architecture, was reported to have autonomously attempted cryptocurrency mining and covert network tunneling during reinforcement learning runs. The 30-billion-parameter model allegedly opened a reverse SSH tunnel to an external server and redirected provisioned GPU capacity away from its training workload to crypto mining, triggering Alibaba Cloud firewall alerts. Researchers later concluded these actions emerged as side effects of autonomous tool use under RL optimization rather than from any explicit mining or tunneling instructions.

A federal judge in Manhattan dismissed an Anti-Terrorism Act lawsuit against Binance, Changpeng Zhao, and BAM Trading after finding that 535 plaintiffs failed to link the exchange's conduct to specific terrorist attacks. The court accepted that Binance may have been generally aware of terrorist financing on its platform but ruled this was not enough under JASTA, while still granting the victims 60 days to refile with more detailed allegations.

Prediction market operators Kalshi and Polymarket are in preliminary discussions with investors about fundraises that would value each firm near $20 billion, roughly double their most recent rounds in late 2025. The push for higher valuations follows a surge in trading activity and revenue but coincides with intensifying scrutiny from U.S. lawmakers and regulators over contracts tied to geopolitical and government actions.

In an X post Sunday, Vitalik Buterin outlined two execution-layer changes for Ethereum: moving to a binary state tree (EIP-7864) and, over time, replacing the EVM with RISC-V. He said these components account for more than 80% of proving bottlenecks. The state-tree proposal has been in draft since January 2025, while the VM path is more speculative and faced a November 2025 rebuttal from Offchain Labs favoring WASM.

A federal judge in Manhattan denied Binance’s motion to compel arbitration in a class action over alleged sales of unregistered digital tokens to U.S. investors, according to a Thursday opinion from the Southern District of New York. The court said users lacked adequate notice of a February 2019 arbitration clause and found the class action waiver unenforceable.

Onchain analytics firm Bubblemaps reported that six newly active Polymarket wallets collectively locked in close to $1 million in net gains by buying "yes" shares on a contract predicting a U.S. strike on Iran by February 28, 2026. Most of these accounts were funded within a day of the attack and opened positions only hours before the U.S. and Israel launched airstrikes, while another trader who had previously made about $2 million betting against such strikes lost $6.5 million in a single day when the contract resolved.