Distributed hash tables (DHTs) are usually used in the open networking environment. where they are vulnerable to Sybil attacks. Pebble-Rotating Game (PRG) mixes the nodes of the honest and the adversarial randomly. and can resist the Sybil attack efficiently. https://www.roneverhart.com/Starburst-Fruit-Chews-Candy-Fun-Size-Packs-Halloween-Mix-30-Piece-Bag/