Linked drand nodes collectively produce publicly verifiable, unbiased, and unpredictable random values at fixed intervals using bilinear pairings and threshold cryptography.
LoTerra is connected to the Oracle (Terrand contract also built by LoTerra) which generates randomness to ensure the safety as well as the reliability of the draw
Terrand Oracle
You can add Terrand randomness and become a worker in a way to get rewards Become a worker