Contract Interaction

Arthur Labs has designed its smart contract infrastructure to seamlessly bridge the gap between Web2 and Web3 technologies. When users interact with our marketplace through the frontend interface, they're simultaneously engaging with both our centralized database and decentralized smart contracts. This dual architecture ensures both user-friendly experiences and blockchain-backed security.

Our smart contracts are deployed on EVM-compatible networks, making them accessible and verifiable through blockchain scanners like Etherscan. Each listing, purchase, and transaction generates both a database entry for quick access and retrieval, and a blockchain record for permanent verification.

Database Management Integration

Our database architecture serves as the primary interface layer, storing user profiles, listing details, and transaction metadata in a format optimized for rapid querying and display. When a seller creates a listing, the core information is first stored in our database, enabling quick searches and filtered views that would be costly to perform directly on the blockchain.

However, every critical transaction also triggers smart contract interactions. The database references these blockchain transactions through their unique hashes, creating a verifiable link between our user-friendly interface and the immutable blockchain records.

Our Smart Contract Architecture

At its core, our smart contract system consists of three main components: Commerce Contracts, Factory Contracts, and a series of supporting interfaces that ensure seamless interaction between components. Let's explore each in detail.

Contracts Implemented in the Marketplace

These contracts form the backbone of our marketplace's transaction system. They manage the actual exchange of goods and services between parties.

Sell Contracts

The SellContract is our primary mechanism for listing items on the marketplace. Each contract instance represents a unique product or service offering, containing:

• Detailed product information (title, description, image references)
• Pricing structures including base price and optional upcharges
• Shipping methods and associated costs
• Quantity tracking
• Time validity controls

When sellers create listings through our interface, a SellContract is deployed with their specified parameters. The contract maintains the core business logic while our database handles the user-friendly presentation layer.

Purchase Contracts

PurchaseContracts are generated when buyers initiate transactions. These contracts manage:

• Escrow of payment funds
• Delivery verification
• Buyer information (encrypted on-chain)
• Transaction status tracking

The PurchaseContract works in conjunction with our database to provide real-time updates while ensuring all critical transaction data is permanently recorded on the blockchain.

Payment Proxy Contracts

PaymentProxy contracts serve as secure intermediaries for financial transactions. They:

• Hold funds in escrow
• Release payments based on delivery confirmation
• Handle dispute resolution scenarios
• Maintain transaction records

This system ensures that funds are only released when all parties fulfill their obligations, providing security for both buyers and sellers.

Factory Contracts

Factory contracts streamline the deployment of new contracts and ensure consistency across the platform.

Sell Contract Factory

The SellContractFactory deploys new SellContracts with standardized parameters and security checks. It:

• Validates listing parameters
• Manages contract deployments
• Tracks all created listings
• Enforces platform standards

Purchase Contract Factory

This factory manages the creation of PurchaseContracts when buyers initiate transactions. It:

• Validates purchase parameters
• Calculates final prices including extras
• Deploys new PurchaseContracts
• Links contracts to the appropriate SellContract

Payment Proxy Factory

The PaymentProxyFactory creates and manages PaymentProxy contracts for each transaction. It:

• Deploys standardized payment contracts
• Manages escrow deployments
• Links payment contracts to purchases
• Tracks transaction status

Open Source Commitment

All our smart contracts are open source and available for public audit. This transparency allows other developers to:

• Verify our security measures
• Understand our implementation
• Build compatible systems
• Contribute improvements

Our contracts follow EIP standards where applicable, ensuring compatibility with the broader Ethereum ecosystem while maintaining our specialized functionality for commerce applications.

Future Development

We continue to enhance our smart contract infrastructure with:

• Cross-chain compatibility
• Gas optimization improvements
• Enhanced privacy features
• Additional contract templates

For technical details and implementation examples, visit our GitHub repository or review our deployed contracts on blockchain scanners.