Edge　storage　presents　a　viable　data　storage　alternative　for　application　vendors　(AVs),　offering　benefits　such　as　reduced　bandwidth　overhead　and　latency　compared　to　cloud　storage.　However,　data　cached　in　edge　computing　systems　is　susceptible　to　intentional　or　accidental　disturbances.　This　paper　proposes　a　decentralized　integrity　auditing　scheme　to　safeguard　data　integrity　and　counter　the　traditional　reliance　on　centralized　third-party　auditors　(TPA),　which　are　unfit　for　distributed　systems.　Our　novel　approach　employs　edge　servers　(ES)　as　mutual　auditors,　eliminating　the　need　for　a　centralized　entity.　This　decentralization　minimizes　potential　collusion　with　malicious　auditors　and　biases　in　audit　outcomes.　Using　a　strategic　game　model,　we　demonstrate　that　ESs　are　more　motivated　to　audit　each　other　than　TPAs.　The　auditing　process　is　addressed　as　a　Nash　Equilibrium　problem,　assuring　accurate　integrity　proof　through　incentives　for　ESs.　Our　scheme＇s　security　and　performance　are　rigorously　assessed,　showing　it　is　secure　within　the　random　oracle　model,　offers　improved　speed,　and　is　cost-effective　compared　to　existing　methods.　It　also　significantly　reduces　computational　and　communication　overhead.　©　2004-2012　IEEE.