# Smart Contracts for Multiagent Plan Execution in Untrusted Cyber-physical Systems

## TL;DR

This paper proposes using smart contracts to ensure reliable plan execution in untrusted multi-agent cyber-physical systems, enhancing robustness against faults and malicious behavior.

## Contribution

It introduces a generic architecture that integrates intelligent planning-based CPS with smart contracts to secure multi-agent plan execution.

## Key findings

- Smart contracts prevent plan failures due to malicious agents.
- The architecture ensures proper action ordering in distributed environments.
- Enhances trustworthiness of multi-agent cyber-physical systems.

## Abstract

Intelligent Cyber-physical systems can be modelled as multi-agent systems with planning capability to impart adaptivity for changing contexts. In such multi-agent systems, the protocol for plan execution must result in the proper completion and ordering of actions in spite of their distributed execution. However, in untrusted scenarios, there is a possibility of agents not respecting the protocol either due to faults or due to malicious reasons thereby resulting in plan failure. In order to prevent such situations, we propose to implement the execution of agents through smart contracts. This points to a generic architecture seamlessly integrating intelligent planning-based CPS and smart-contracts.