Veridy Marketplace

Veridy is a decentralized data marketplace, where users can sell data to be bought with USDT by people, companies and other third parties. This repository contains of the core smart contract of the Veridy marketplace, as well as the deployment and test scripts.

Overview

Veridy utilises Tether WDK for its wallet infrastructure. This allows easy onboarding for both newcomers and crypto-native users. On Veridy, users can sell many types of data (including tabular, image, audio and many others...) to those who are in need of specific, domain-focused data for their research, work, and such other activities.

How It Works

flowchart LR
    subgraph sell ["👤 Seller"]
        direction TB
        S1[📁 Upload Data] --> S2[🏷️ Set Price & Metadata]
    end

    subgraph market ["🏪 Marketplace"]
        direction TB
        M1[📋 Listings] --> M2[💰 USDT Escrow]
    end

    subgraph buy ["👥 Buyer"]
        direction TB
        B1[🔍 Browse & Select] --> B2[📥 Receive Data]
    end

    sell -->|"createListing()"| market
    market -->|"purchaseListing()"| buy
    buy -.->|"USDT Payment"| market
    market -.->|"acceptPurchase()"| sell

flowchart LR
    A[📁 List Data] --> B[💵 Buyer Pays]
    B --> C[💰 Escrow]
    C --> D{Accept?}
    D -->|Yes| E[✅ Complete]
    D -->|No/Timeout| F[↩️ Refund]

Quick Start

# Build
forge build

# Test
forge test

# Format
forge fmt

Setup (one-time)

Import your deployer account into Foundry's secure keystore:

cast wallet import deployer --interactive

Deploy to Sepolia

forge script script/DeployVeridyMarketplace.s.sol:DeployVeridyMarketplace --rpc-url sepolia --account deployer --broadcast

Deploy to Arbitrum

forge script script/DeployVeridyMarketplace.s.sol:DeployVeridyMarketplace --rpc-url arbitrum --account deployer --broadcast

Local Development

Start Anvil and deploy with mock USDT:

# Terminal 1
anvil

# Terminal 2
forge script script/DeployVeridyMarketplace.s.sol:DeployVeridyMarketplaceLocal \
  --rpc-url http://localhost:8545 --broadcast

Contract Architecture