Bitcoin has surged to $81,000, marking a 7% increase over the past week, driven by strong institutional demand as spot Bitcoin ETFs recorded $1.16 billion in net inflows. Despite the price rally, derivatives markets show caution, with two-month Bitcoin futures trading at a 1% annualized premium, below the typical 4-8% range, indicating limited leverage among traders. On-chain activity presents a contrasting picture, with daily transfer volumes dropping 54% from three months ago to $4.1 billion, suggesting reduced retail participation. The options market remains slightly bearish, with the 30-day delta skew near neutral but not indicating significant upside momentum. This divergence highlights the reliance on institutional inflows to sustain Bitcoin's price strength amid subdued on-chain and derivative activity.