Explore the concept of randomness and its significance in a 28-minute conference talk from NorthSec. Delve into various types of randomness, including private, public, verifiable, distributed, and the absence of randomness. Examine use cases for each type and discuss potential problems and solutions. Learn about "drand," an open-source software for distributed randomness, and discover its applications in running personal networks or accessing high-quality public, verifiable, and distributed randomness. Gain insights into the League of Entropy, the main existing drand network, its uses, and the importance of treating public randomness as a public service.