DataXchange

Overview

DataXchange is PRIV Protocol's data marketplace, enabling privacy-preserving transactions between data sellers and buyers.

┌──────────────────────────────────────────────────────────────────┐
│                        DataXchange                                │
├──────────────────────────────────────────────────────────────────┤
│                                                                   │
│   Sellers                     Marketplace                Buyers   │
│   ┌───────┐                  ┌──────────┐              ┌───────┐ │
│   │ Users │ ──Anonymized───> │ Listings │ ──PRIV───>  │ dApps │ │
│   └───────┘    Data          └──────────┘   Tokens    └───────┘ │
│                                   │                              │
│                                   ▼                              │
│                              ┌──────────┐                        │
│                              │ Revenue  │                        │
│                              │ (95%)    │                        │
│                              └──────────┘                        │
│                                   │                              │
│                                   ▼                              │
│                              Seller Wallet                       │
│                                                                   │
└──────────────────────────────────────────────────────────────────┘

Key Features

How It Works

For Sellers

1. Collect data via the PRIV plugin or SDK
2. Anonymize and encrypt using PRIV tools
3. List on marketplace with price and metadata
4. Receive PRIV when data is purchased

For Buyers

1. Browse listings by category and quality
2. Preview samples before purchasing
3. Pay with PRIV tokens
4. Download data with access key

Data Categories

Pricing

Fee Structure

Price Discovery

Prices are set by sellers based on:

• Data volume: More data points = higher value
• Data quality: Completeness, accuracy, freshness
• Data uniqueness: Rare behaviors command premiums
• Market demand: Popular categories have higher demand

Quality Standards

All listings must meet minimum requirements:

Quality Score

Listings receive a quality score (0-100):

Quality Score = Data Completeness (40%)
              + Time Coverage (20%)
              + Anonymization Level (20%)
              + Buyer Ratings (20%)

Privacy Guarantees

For Sellers (Data Subjects)

• Anonymization: All wallet addresses are hashed
• K-Anonymity: Data grouped with k-1 similar users
• Differential Privacy: Statistical noise prevents identification
• Consent: Explicit opt-in required for marketplace

For Buyers

• Verified Data: Quality checked before listing
• Clear Schemas: Know exactly what you're buying
• Sample Data: Preview before purchase
• Refund Policy: Disputes for low-quality data

Use Cases

Research

Academics and analysts purchase data for:

• Market structure analysis
• User behavior studies
• Protocol comparison research

Product Development

dApps use data to:

• Understand user journeys
• Identify feature gaps
• Benchmark against competitors

Trading Strategies

Quantitative traders analyze:

• Whale activity patterns
• Sentiment indicators
• Early trend signals

Advertising

Advertisers access:

• Audience segments
• Interest profiles
• Engagement patterns

Smart Contract

DataXchange is powered by an on-chain marketplace contract:

interface IDataXchange {
    function createListing(bytes32 dataHash, uint256 price, ...) external;
    function purchase(uint256 listingId) external returns (bytes32 accessKey);
    function withdrawEarnings() external;
}

Smart Contract Documentation

Getting Started

• Sell Data - List your data on the marketplace
• Buy Data - Purchase datasets for your project
• API Reference - Integrate programmatically

FAQs

Is my identity revealed when I sell data?

No. Your wallet address is hashed before data is listed. Buyers cannot identify individual sellers.

What if buyers receive low-quality data?

Buyers can open disputes. If validated, they receive refunds. Sellers with repeated issues are removed.

How quickly do I receive payment?

Payments are instant on-chain. Withdraw to your wallet anytime.

Can I see who buys my data?

No. Buyer identities are also anonymized to protect their research interests.

What data should I NOT sell?

Never include private keys, seed phrases, passwords, or personally identifiable information.

Next Steps

• Listing Data - Create your first listing
• Purchasing Data - Buy data for your project
• Seller Guide - Best practices for sellers