Bitcoin developers have launched a visualization tool designed to show how entropy works and how randomness can be generated for Bitcoin private keys. The release, highlighted by Bitcoin News in a post on X, walks users through several sources of randomness, including true random number generators (TRNGs), pseudo-random number generators (PRNGs), rolling dice and flipping coins. The tool is aimed at making a technical part of Bitcoin security easier to understand, since private keys depend on strong, unpredictable randomness.