  We present Elevator, a novel algorithm for hub samplingin peer-to-peer
networks, enabling the construction of overlays with atopology between a random
graph and a star network, and networksthat have both hubs and are resilient to
failures. Our approach emergesfrom principles of preferential attachment,
forming hubs spontaneously,offering an innovative solution for decentralized
networks that can benefituse cases requiring a network with both low diameter
and resilience tofailures.
