On December 21, Dogecoin fell 1.52% to trade near $0.1296. Intraday charts show local support around $0.1287; failure to rebound by day's end could open a move toward $0.1250. On higher time frames, resistance at $0.1330 remains intact, with a possible slide to $0.12–$0.1250 or a late-month bounce toward $0.14.

Cardano (ADA) rebounded above its 20-day EMA, and CryptoCeek says a clean move past the 50-day SMA at $0.50 could pivot price action from consolidation toward $0.60–$0.70. The analyst also warns that a rejection near $0.50 may force a drop back below the 20-day EMA. Separately, Charles Hoskinson proposed an XRP-focused DeFi summit at the University of Edinburgh.

Dogecoin fell 1.21% over the past 24 hours to $0.1297, hovering near a key $0.128 support after a multi-year trendline break. On December 21, 2025, Ali Charts warned that sustained selling could open a move toward $0.090. House of Doge detailed 2025 milestones and payments plans slated to begin rolling out in Q1 next year.

On December 21 2025, Ethereum co-founder Vitalik Buterin used Farcaster posts to argue that prediction markets help counter extreme opinions and misinformation on emotionally sensitive topics. He responded to criticism of platforms like Polymarket, claiming that small markets on major events do not create harmful incentives and can offer more accurate risk signals than social media or headlines. While Buterin firmly opposed assassination markets, he suggested social norms, oracle design, and journalistic standards as ways to make such markets unworkable.

After reaching the $120,000-$125,000 range in October 2025 and then dropping to the mid-$80,000s, Bitcoin is trading around $87,700 as traders eye profit-taking into January. Historical monthly data show January has often delivered positive returns for BTC, with notable gains in 2020, 2023 and 2025, even though some past years posted steep losses. The analysis suggests that if BTC enters January below its 2025 high and under the $90,000 mark, the greater risk could be exiting too late rather than too early.

On Sunday, Bitcoin hovered near $88,000 into the weekly close as traders positioned for volatility. Some analysts outlined a relief rally toward $98,000–$100,000 and even $150,000 targets, while others warned of a slide toward the $70,000–$72,000 zone amid rising Binance inflows and a technical break below $90,000.

Meme coins have lagged the broader market recently, with sector-wide losses while Bitcoin holds firmer, pushing traders to look at presale opportunities. Three highlighted projects are Bitcoin Hyper, PEPENODE, and Maxi Doge, which combine meme appeal with specific utility such as a Bitcoin Layer 2, virtual mining, and trading competitions. Their presales have already raised millions of dollars and offer high advertised staking yields, aiming at investors positioning for potential 2026 gains.

Shiba Inu opened 2025 at $0.00002113 and held above $0.00001 for nine months, but on Oct. 10 it fell to $0.0000085 amid a flash crash. It is at $0.000007297, down 2.9% daily and 10.88% weekly; to erase a zero, SHIB must clear $0.0000095 and reclaim $0.00001 as support.