Italy's securities regulator CONSOB has set December 30, 2025 as the final deadline for crypto platforms to transition from domestic registration to the EU's Markets in Crypto-Assets regime. Firms that file for MiCA authorization before the cutoff may continue serving Italian clients provisionally until approval or until June 30, 2026. Platforms that do not seek authorization must cease operations, notify users, and return all funds by the deadline.

Ethereum validator participation fell to approximately 75% on December 4, 2025, after a bug in the Prysm consensus client disrupted node operations. The decline approached the two-thirds finality threshold required for network consensus. Engineers deployed an emergency workaround using a startup flag, and participation rates returned to normal levels within hours.

21Shares has launched a leveraged exchange-traded fund for Sui on Nasdaq, trading under the ticker TXXS. The fund offers 2x daily exposure to the Layer-1 blockchain asset. This marks the first leveraged ETF tied to the Sui ecosystem available on a major U.S. exchange.

BitMine has acquired approximately $150 million worth of Ethereum, increasing its total holdings to over 3% of the cryptocurrency's circulating supply. The purchase represents a contrarian move as most treasury firms have reduced ETH exposure amid market volatility. The company has stated its goal of controlling 5% of all circulating ETH.

Binance will remove FDUSD-denominated margin pairs from cross and isolated markets on December 11, 2025. Borrowing for these pairs ends December 8. The delisting affects over 20 tokens including PENGU, NOT, FLOKI, and ORDI, with all positions force-closed and orders canceled at implementation.

U.S. financial regulators are racing to implement the GENIUS Act by July 2025, following Congressional passage of the stablecoin legislation earlier this year. The law requires stablecoins to maintain 100% dollar backing and mandates annual audits for issuers exceeding $50 billion in market value. Multiple agencies including the Federal Reserve, FDIC, NCUA, and OCC are coordinating new licensing frameworks and oversight structures to meet the statutory deadline.

Britain has enacted the Property (Digital Assets etc) Act, officially recognizing cryptocurrencies and stablecoins as property under national law. The reform ends years of legal ambiguity by establishing clear rules for ownership disputes, insolvency proceedings, and inheritance cases involving digital assets.

Early December trading revealed institutional anxiety centered on potential MSCI index changes rather than Bitcoin's price movement. Public companies holding significant BTC reserves face possible exclusion from global indexes due to balance sheet concentration. This structural uncertainty created more concern among professional asset managers than short-term price fluctuations.

Bank of America has revised its digital asset guidance, now recommending wealth clients include crypto exposure as a standard portfolio component. The bank advises allocations between 1% and 4% based on individual risk tolerance, shifting from its earlier position that treated crypto as an optional consideration investors could disregard.