Trustworthy Blockchain Gateways for Resource-Constrained Clients and IoT Devices

Resource-constrained blockchain clients and the Internet of Things (IoT) devices pose limitations in terms processing storing entire ledger mining blocks. Such rely on a view provided by full nodes acting as gateways. However, gateway sometimes can provide distorted that makes lightweight vulnerable to eclipse attack. When under such an attack, client cannot differentiate between forked legitimate leading fatal consequences huge losses incurred. In this paper, we propose data attestation solution employs validators attest responses reported gateways nodes. We leverage smart contracts give confidence they are unable validate it from network themselves. The system governs process comprises submitting requests, approving them, recording response validators, manage payments. Clients can, thereafter, their feedback about validator/gateway performance form reputation score. present proposed architecture describe its implementation Ethereum network. evaluate with respect functionality testing, cost execution, security analysis developed contracts. make our code testing scripts publicly available.