VSkill - v1

About the Project

VSkill (VeriSkill) is a decentralized platform for verifying skills. It leverages blockchain technology to create a transparent and trustworthy system for skill verification. The platform involves three key roles:

1. Users: Submit evidence to be verified.
2. Verifiers: Stake money to become verifiers, review evidence, and decide on skill verification.
3. Owner: Can modify submission fees and supported skills for verification.

Built With

• Solidity
• OpenZeppelin
• Foundry
• IPFS
• Chainlink (Price Feed, VRF, Automation)

Features

• Staking mechanism for verifiers
• Reputation system for verifiers
• Incentive mechanism to encourage correct verifications
• IPFS integration for evidence submission
• NFT minting for verified skills
• Random assignment of evidence to verifiers using Chainlink VRF
• Automated evidence distribution and status checking using Chainlink Automation
• Real-time USD/ETH price conversion using Chainlink Price Feed

Architecture

VSkill consists of several key modules that work together to create a decentralized skill verification platform:

1. Staking Module:

   • Manages verifier staking and reputation
   • Handles incentive distribution

2. User Module:

   • Manages user evidence submission
   • Tracks evidence status

3. User NFT Module:

   • Mints NFTs for verified skills

4. Distribution Module:

   • Uses Chainlink VRF for random assignment of evidence to verifiers

5. Verifier Module:

   • Manages verifier feedback submission
   • Handles evidence re-distribution in case of conflicting opinions

Getting Started

Prerequisites

• Foundry
• Git
• CMake

Installation

1. Clone the repository:

   git clone https://github.com/cqlyj/VSkill
   

2. Navigate to the project directory:

   cd VSkill
   

3. Install dependencies:

   make install
   

4. Build the project:

   make build
   

Usage

1. Start a local Ethereum node:

   anvil
   

2. Deploy the contracts you want to interact with(You can find the commands in the Makefile):

   make deploy-/*THE CONTRACT YOU WANT TO INTERACT*/
   

3. Interact with the contracts using the provided scripts in Makefile.

Testing

VSkill includes a comprehensive test suite to ensure the reliability and correctness of the smart contracts.

To run the tests:

forge test

For more verbose output:

forge test -vv

Deployment

To deploy VSkill to a testnet or mainnet:

1. Set up your environment variables:

   cp .env.example .env
   

   Edit .env and add your RPC URL and private key.

2. Run the deployment script:

   make deploy-/*THE CONTRACT YOU WANT TO DEPLOY*/
   

Make sure to configure the Chainlink oracles and other necessary parameters after deployment.

zkSync local node instructions

In case you want to deploy to the layer 2 zkSync local network, you can follow the instructions in file zksync-node-instructions.md.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contact

Luo Yingjie - luoyingjie0721@gmail.com