Centralised instant messaging platforms face significant challenges including censorship, data security concerns, and service outages, prompting a shift towards decentralised alternatives. Blockchain-based decentralisation offers solutions to these issues by enhancing privacy, reducing censorship risks, and enabling user governance. OpenChat, a decentralised messaging platform built on the Internet Computer (ICP) blockchain, aims to revolutionise digital communication by offering a secure and censorship-resistant chat experience. Leveraging ICP's infrastructure, OpenChat provides real-time communication capabilities while maintaining the benefits of decentralisation. Governed by its users through a decentralised autonomous organisation (DAO), OpenChat ensures user autonomy and data security, with plans to introduce end-to-end encryption and innovative tokenization systems. As a fully decentralised platform, OpenChat seeks to address the shortcomings of centralised messaging apps and pave the way for the future of online communication.