U.S. federal prosecutors have charged 26-year-old Canadian citizen Nathan Gauvin with running an alleged $42 million fraud scheme linked to Gray Digital Capital Management and its Gray Fund products. According to an indictment in the Eastern District of New York, he is accused of using Discord to promote misleading crypto and traditional finance investments, diverting investor funds for personal expenses, and securing more than $800,000 in credit by misrepresenting his finances. Authorities say much of the money raised did not go into legitimate investment activity and was instead used to repay earlier investors and cover luxury spending. The SEC has filed parallel civil charges and the FBI has asked additional potential victims to come forward.

On December 3, Tajikistan's parliament approved amendments to the Criminal Code that introduce Article 253(2) to punish crypto mining operations using stolen electricity, according to a local media report. Offenders face fines ranging from $1,650 to $8,250 or prison terms of two to five years, which increase to five to eight years for cases deemed especially large in scale, and the bill will become law once President Emomali Rahmon signs it.

US spot Bitcoin ETFs posted a net outflow of $60.48 million on Monday, with BlackRock's IBIT taking in $28.76 million while GBTC and FBTC shed $44.03 million and $39.44 million respectively, according to SoSoValue. Spot Ethereum ETFs recorded a $35.5 million net inflow the same day. XRP ETFs have amassed more than $900 million since launching last month, including $38.04 million in inflows on Monday.

At the 2025 Blockchain Association Policy Summit in Washington, OCC Chief Jonathan Gould said digital asset firms seeking national trust bank charters should be evaluated under the same standards as traditional financial institutions, according to remarks at the event. He said the OCC has received about 14 charter applications since the start of the year and expressed confidence in the agency’s ability to supervise new entrants and activities.

Sony Bank will introduce a U.S. dollar-pegged stablecoin for American customers starting in fiscal 2026, Nikkei reported. The Sony banking unit plans to deploy the 1:1 USD stablecoin for payment and settlement operations across its gaming and anime divisions. The move could reduce credit card processing fees for customer subscriptions.

Yearn Finance's yETH product suffered an exploit on November 30, 2025, enabling unlimited token minting that drained Balancer pools. Attackers extracted approximately 1,000 ETH valued at $3 million and transferred the funds through Tornado Cash, according to blockchain journalist Colin Wu. The platform confirmed its V2 and V3 Vaults remained unaffected and operational.

CME Group suspended trading on its Globex platform following a cooling system malfunction at CyrusOne data centers. The outage affected futures and options contracts across equities, commodities, and cryptocurrencies. Support teams worked to resolve the technical issue as trading remained halted.

Ethereum co-founder Vitalik Buterin donated 128 ETH to Session, a privacy-focused encrypted messaging platform, on November 26, 2025. The contribution, valued at approximately $390,000, supports development of permissionless account creation and metadata privacy features. Session Technology Foundation President Alex Linton explained how the platform's decentralized architecture addresses privacy vulnerabilities without requiring phone numbers or centralized approval systems.

Spain's Sumar Parliamentary Group has submitted amendments to increase taxation on digital assets including Bitcoin and Ethereum. The proposal would shift crypto gains from the current savings tax rate capped at 30% to the general Personal Income Tax rate of up to 47%. The amendments, presented to the Congress of Deputies this month, also include provisions for a visual risk assessment system for cryptocurrency platforms.