2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/31502The LOCKSS project has developed and deployed in a world-wide test a peer-to-peer system for preserving access to journals and other archival information published on the Web. It consists of a large number of independent, low-cost, persistent web caches that cooperate to detect and repair damage to their content by voting in "opinion polls." Based on this experience, we present a design for and simulations of a novel protocol for voting in systems of this kind. It incorporates rate limitation and intrusion detection to ensure that even some very powerful adversaries attacking over many years have only a small probability of causing irrecoverable damage before being detected.25 Pages, 10 figures. Extended version of conference paperDistributed, Parallel, and Cluster ComputingDigital LibrariesC.2.4; H.3.7; D.4.5text