This week's cryptocurrency rollercoaster saw the crypto market cap plunge into the red on speculation that the highly anticipated Bitcoin ETF will once again be denied.

Despite the downturn, Bitcoin still dominates at 50% market share, Ethereum holds steady at 16%, and altcoins like Polygon surged over 80% this week.

NFT mania continues, with Bitcoin NFT trading volume breaking $881 million in December and SOL sales crushing ETH.

Other updates include MicroStrategy's $2.65 billion Bitcoin profit, IRS policy changes in 2024, crypto skeptic Jim Cramer’s comments, and Jupiter's airdrop.

While crypto expert Lyn Alden predicts $200k Bitcoin in 2024, this past week was a reminder of the volatility inherent in crypto as hopes for a Bitcoin ETF were dampened.

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