PRETRUST: A Framework for Fast Payments in Blockchain Systems

TL;DR

PRETRUST is a blockchain framework designed to enable fast, secure payments by using guarantee mechanisms, sharding, and trusted execution environments to improve efficiency and scalability.

Contribution

It introduces a novel framework combining guarantee mechanisms and sharding with trusted execution environments for efficient blockchain payments.

Findings

Achieves faster transaction processing through guarantee-based verification.

Ensures security while scaling out payment capacity.

Demonstrates effectiveness in various transaction scenarios.

Abstract

In this study, we propose PRETRUST, a new framework to address the problem of the efficiency of payment process based on blockchain systems. PRETRUST is based on the thoughts of consortium chains, supporting fast payments. To make parties address transactions efficiently and scale out the capacity, the main strategy is based on the guarantee mechanism and shard technology with a random arrangement of transactions and consensus groups. In PRETRUST, the guarantee process replaces the verification of a transaction on-chain to realize the optimization of efficiency. And the model of a trusted execution environment is utilized in the interactions between PRETRUST and public systems. Throughout the paper, we discuss several transaction scenarios and analyze the security, which shows that PRETRUST can guarantee security.