Vladimir Putin said the United States and Russia are discussing joint management of the Zaporizhzhia Nuclear Power Plant, claiming Washington is interested in using its electricity for Bitcoin mining. Ukraine and international bodies have rejected any arrangement excluding Kyiv as illegal.

Trust Wallet reported a security issue affecting its browser extension v2.68 on December 25 and urged users to disable it and update to v2.69. Hundreds of accounts saw unauthorized outflows totaling over $6 million across SOL, BTC, and EVM tokens. Funds moved through multiple addresses, while mobile-only users were not affected.

According to Binance exchange data, Bitcoin plunged to about $24,111 on the BTC/USD1 pair and snapped back to $87,000 within seconds, a dislocation isolated to USD1. Analysts say BTC is consolidating in a descending triangle below the 21MA, with a decisive breakout or breakdown needed to confirm the next direction.

On December 24, 2025, President Sadyr Japarov of Kyrgyzstan confirmed that the som-backed stablecoin KGST has been listed on the global crypto exchange Binance and operates on BNB Chain. The token, backed 1:1 by the national currency, is expected to support the country's cross-border payments and expand its footprint in the digital asset market, alongside a new gold-backed USD-pegged stablecoin USDKG.

Spain plans to apply the EU's DAC8 directive from January 1, 2026, requiring crypto exchanges and service providers to report user transactions and balances. The country also aims to complete implementation of the Markets in Crypto-Assets (MiCA) framework by July 2026, bringing standardized rules for token issuance, marketing, and stablecoins. These changes will tighten tax oversight and align Spain with broader European crypto regulation.

In VanEck's 2026 outlook, David Schassler argues that Bitcoin's current underperformance versus the Nasdaq 100 Index could set it up to be a leading asset next year. He links the recent downturn to softer risk appetite and temporary liquidity pressure, while colleague Matthew Sigel says the four-year cycle remains intact after an early October 2025 peak. Market expert Ruslan Lienkha expects macroeconomic factors and corporate treasury allocations to be key drivers for BTC and ETH in 2026, alongside wider institutional participation as regulation advances.

On December 18, 2025, Arkham Monitoring said BitMine's Ether purchases for the week reached at least $229.31 million, including a 30,075 ETH ($88.73 million) withdrawal from FalconX. The NYSE American–listed firm also said Monday it holds over 3.2% of ETH supply, while CoinGecko data shows 407,331 ETH added in the past 30 days.

At the ECB's final press conference on Thursday, Christine Lagarde said the digital euro is technically ready and now awaits decisions by the European Council and European Parliament. In September, Executive Board member Piero Cipollone called a rollout around mid-2029 "a fair assessment." Lagarde also said MiCA-compliant stablecoins can be supervised and regarded as safe.

Russian State Duma lawmaker Anatoly Aksakov has reiterated that payments inside Russia must be settled exclusively in rubles, rejecting any prospect of Bitcoin, Ethereum or other cryptocurrencies becoming legal tender. Under Russia's existing digital financial assets law, crypto is classified as property and may only be used for investment, even as the country leads Europe in crypto adoption and recorded $376.3 billion in transfers between July 2024 and June 2025. Lawmakers have proposed initiatives such as a national crypto bank and Russia legalized cryptocurrency mining on November 1, 2024, but authorities still oppose using crypto for payments.