Details

Autor(en) / Beteiligte

• Lee, Minghao
• Ma, Binhao
• Han, Di
• Wang, Dejun
• Meng, Bo

Titel

ISTVP: Independent single transaction verification protocol for light node using fraud proofs without collaborator

Ist Teil von

• IET blockchain, 2024-06, Vol.4 (2), p.209-221

Ort / Verlag

Wiley

Erscheinungsjahr

2024

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Most blockchain users run light nodes on mobile devices. Due to limited storage and computation, light nodes cannot perform transaction validation. This shortage makes opportunities for malicious nodes to produce blocks containing invalid transactions, which results in the loss of funds for light nodes. Fraud proofs play a significant role in ensuring transaction security for light nodes. However, existing fraud proof schemes require honest collaborators and the processing of entire blocks. To address these limitations, Independent Single Transaction Verification Protocol for Light node Using Fraud Proofs without Collaborator called ISTVP is proposed that enables light nodes to independently verify transactions and generate fraud proofs without relying on collaborators or processing the entire block. To support ISTVP, SVST is introduced, an efficient block structure for single‐transaction verification. SVST not only efficiently indexes historical transaction outputs to improve verification efficiency, but also significantly reduces the storage requirements for verifying transactions to O(h+logn)${\mathrm{O}}( {{\mathrm{h}} + \log {\mathrm{n}}} )$. Furthermore, the authors analyze the security of ISTVP and demonstrate that it satisfies both persistence and liveness, while maintaining the level of security of full node. We present SVST, a block extension architecture designed to enhance the efficiency of transaction history retrieval and reduce storage requirements for transaction validation. By leveraging SVST, we introduce ISTVP, a high‐level verification protocol tailored for light nodes. ISTVP enables light nodes to independently verify transactions without the need for collaborators and eliminates the need to process the entire block for fraud proofs generation. Our proposed solution offers light nodes the level of security of full nodes while requiring significantly less storage capacity, which significantly contributes to enhancing of the entire blockchain network.