This candlestick chart visualizes Bitcoin’s daily price fluctuations from 2013 to 2021, with green and red bars indicating bullish and bearish trading days. Built with D3 v6, it uses `d3.scaleUtc` for the time axis and `d3.scaleLinear` for price, rendering SVG lines for high-low ranges and rectangles for open-close spreads. The chart includes rotated monthly tick labels and axis titles, drawing on historical cryptocurrency data sourced from Kaggle.