Phala aims to become the privacy protection infrastructure of Web3.0. It is developed based on Substrate and implements confidential smart contracts through the TEE blockchain architecture, which can provide privacy computing services for the Polkadot ecosystem.
Phala is Polkadot's private computing infrastructure. Phala Network is a private computing parachain on Polkadot. Based on a pow-like economic incentive model, Phala releases the privacy computing power of countless CPUs and applies it to the Polkadot parachain, thereby serving other applications such as Defi and data services on Polkadot. The Phala-based applications pLibra and Web3 Analytics have received web3 foundation grants.

PHA is the platform's native utility token and has the following use cases:
Trusted computing resources: use PHA tokens to purchase trusted computing resources (such as trusted computing power, on-chain computing and storage resources and off-chain storage).
Data Exchange Fee: Phala provides a contract-based data exchange infrastructure for standardizing data collection, analysis, and transaction protocols. Utilizing Phala's protocol, a confidential but trustworthy transaction ecosystem is established for buyers and sellers.
Security guarantee: Gatekeeper must stake a certain amount of PHA tokens, which may be punished for misbehavior.
Governance: Holders with a certain amount of PHA can join Phala DAO to participate in community governance.

Project Introduction

Phala Network is a cloud computing service that provides privacy protection. It provides computing power comparable to existing cloud services and protects the privacy of hosting programs.

Phala Network consists of two types of nodes:
TEE (Trusted Execution Environment) workers are responsible for executing cryptographic contracts. TEEs and tamper-resistant processors are accessed in a permissionless manner. Most personal computers are capable of connecting to Phala and running TEE nodes. This is what keeps it decentralized and ensures that Phala remains a smooth operation and free from censorship.
Gatekeeper runs the nodes that maintain the Phala blockchain. They must always be online to manage the miners' keys, as key custodians are needed to run crypto contracts. Gatekeeper can verify that worker hardware and software are unmodified and secure, can handle worker rotation and replication factoring, and can manage its state by recording inputs and outputs to maintain order status without revealing content.