This example presents a pseudo-Sankey diagram visualizing the flow of Bitcoin transaction outputs, breaking down a total input into distinct output categories such as fees and transferred satoshis. Constructed entirely with hand-coded SVG paths and rectangles rather than a dynamic layout algorithm, the visualization manually positions colored flows and nodes to mimic a Sankey’s appearance. The code relies on D3 v5 only for basic SVG rendering, while all shapes and styles are defined statically in the HTML, with gradients and labels added via SVG definitions and text elements. The underlying data is sourced from a specific blockchain transaction broadcast on September 14, 2023.