Harnessing chaos in Cloudflare offices

LavaRand is a system that uses physical sources of entropy to enhance the security of the internet. Initially, it was based on lava lamps in Cloudflare's San Francisco office, but has since diversified with new sources such as double pendulums in London and mobiles in Austin. These installations provide unpredictable and visually appealing randomness that is harnessed by LavaRand to refresh the entropy pools of Cloudflare servers periodically. The drand protocol, developed by the League of Entropy, allows for distributed and verifiable public randomness, which can be used in applications ranging from online gaming to timelock encryption.