On December 25, 2025, Blockstream CEO Adam Back argued that Bitcoin need not be redesigned to counter hypothetical quantum threats, saying Taproot's key tweak was recently proven post‑quantum secure. He suggested deprecating key‑path spends if CRQC ever emerged and criticized hash‑only formats, while BIP 360 advocates push stronger guarantees despite potential feature trade‑offs.

On December 25, a Bitcoin BTC/USD1 pair on Binance suddenly dropped by more than 70%, briefly trading below $25,000 before rebounding above $87,000. The move was described as a flash crash with low liquidity and potential large liquidations, while one DeFi researcher alleged manipulation without providing evidence. After the event, Bitcoin traded around $87,420.41 with a daily range between $86,411.80 and $87,956.88 and lower trading volumes.

In the last 12 hours, according to CoinGlass, Solana saw an 8,392% liquidation imbalance as $4.94 million in long positions were erased. SOL tested the $124.11–$125.42 death cross zone at $125.28 before sliding to $120.78, and it now trades at $121.43 with volume down 14.93% to $2.74 billion. RSI between 37 and 39 signaled mild oversold conditions, while short liquidations reached $58,170.

Binance founder Changpeng Zhao responded to a recent $50 million loss from an address poisoning scam within one hour by proposing real-time blacklist queries across the crypto industry. He believes coordinated blacklisting of wallets receiving such funds, supported by security alliances and better wallet design, could drastically reduce these attacks.

On December 24, 2025, Midnight developer Sebastien Guillemot said the team completed a key cryptographic step to enable direct interoperability between Ethereum and Cardano wallets. He cited support for Ethereum’s Keccak and Cardano’s Blake2b as the basis for a privacy-first layer that validates ownership without exposing user data.

According to market data, Solana's price has fallen 6.18% over the past 30 days and is showing a new death cross on the hourly chart as the 9-day and 26-day moving averages intersect. Trading volume rose 10.6% to $3.19 billion in the last 24 hours, yet SOL remains under pressure, slipping to $122.60 after an intraday high of $128.39. Analysts note that a potential Cardano-Solana bridge and Solana's strong revenue metrics could offer longer-term support despite the current downtrend.

Ethereum founder Vitalik Buterin has outlined why the network enforces a contract size limit as a defense against denial-of-service attacks. He noted that very large contracts are costly for nodes to store, transmit and process, and hinted that future upgrades such as an EIP-7864 unified binary tree could eventually enable unlimited contract sizes while still considering gas cost mechanics.

Shiba Inu is signaling a potential rebound as its hourly chart approaches a golden cross, with the 9-day and 26-day moving averages nearing convergence around $0.000007271. SHIB trades near $0.000007328 with a modest 0.38% daily gain, while 24-hour volume has climbed to $93.52 million amid ongoing volatility below the $0.00001 level and inconsistent token burns. Despite recent supply reductions via dead wallets, persistent sell-offs and bearish sentiment suggest a sustained rally may be difficult without a stronger catalyst from the current technical setup.

Cardano's Midnight (NIGHT) saw trading activity surge over the last 24 hours, with volume up more than 68% to $3.53 billion, according to CoinMarketCap. The token rose 3.15% to $0.06866, ranging between $0.06389 and $0.07, while sentiment gauges showed the Fear and Greed Index at 27 and RSI at 63.68.