Canada’s tax authority has stepped up crypto enforcement by focusing a probe on 2,500 Dapper Labs users linked to about C$72 million ($54 million) in suspected unpaid taxes, according to The Canadian Press. A court approved an “unnamed persons requirement” in September allowing officials to obtain user data. Despite recovering more than C$100 million through crypto audits over the past three years, the agency has not brought criminal charges in any crypto tax case since 2020.

State Representative Kyle Pierce filed House Bill 1042 on Thursday, requiring cryptocurrency exchange-traded fund options in Indiana's public retirement programs. The legislation also bars local governments from imposing unreasonable restrictions on digital asset activities, including self-custody, payments, and mining operations.

On-chain investigator ZachXBT reported on December 5 that a British individual allegedly connected to the $243M Genesis creditor Bitcoin theft may have been apprehended in Dubai. Approximately $18.58M in cryptocurrency has reportedly been seized and held in a single Ethereum wallet. Dubai authorities have not issued official confirmation of any arrest or seizure.

The International Monetary Fund published a comprehensive stablecoin assessment on December 5, 2025, warning that inconsistent national regulations are creating structural obstacles for oversight and cross-border payments. The fund called for harmonized definitions, uniform reserve requirements, and coordinated supervision as the market exceeds $300 billion. Divergent national frameworks allow issuers to operate from jurisdictions with lighter oversight while serving users in stricter markets, undermining authorities' capacity to monitor reserves and compliance.

The Commodity Futures Trading Commission has authorized spot cryptocurrency trading on federally regulated futures exchanges in the United States. Acting Chair Caroline Pham announced Thursday that registered exchanges can now list spot crypto products, according to guidance from the President's Working Group on Digital Asset Markets. The move follows coordination among U.S. regulators and marks a historic expansion of the agency's oversight to include direct asset purchases and sales.

Reform UK secured £9 million ($12 million) from British crypto investor Christopher Harborne, the largest single political donation by a living individual in UK history, Electoral Commission figures show. The contribution comes as the UK government examines potential restrictions on cryptocurrency donations to political parties over transparency and foreign interference concerns.

Strategy has set aside $1.44 billion in cash to cover dividend payments on preferred stock and interest obligations for at least 12 months, data show. The reserve represents a structural shift from the company's historical practice of channeling capital primarily into Bitcoin accumulation. Monthly BTC purchases dropped from 134,000 BTC in 2024 to 9,100 BTC in November 2025.

Polymarket has resumed operations in the United States following regulatory clearance from the Commodity Futures Trading Commission. The platform launched a phased rollout for waitlisted users, who can now access sports event contracts, with additional markets planned for future release. The approval follows a $1.4 million settlement in 2022 and the platform's $112 million acquisition of Florida-based derivatives exchange QCX in July 2025.

The U.S. Securities and Exchange Commission issued nine warning letters Tuesday to major ETF providers including Direxion, ProShares, and Tidal Financial, halting proposed funds designed to deliver three to five times daily returns on stocks and cryptocurrencies. The agency cited violations of Rule 18f-4, which limits a fund's value-at-risk exposure to 200% of its reference benchmark. ProShares withdrew several applications within one day of the letters being posted.