Smart Contract Reference Documentation¶

Overview¶

The Gemforce platform is built on a sophisticated smart contract architecture using the Diamond Standard (EIP-2535) for upgradeable contracts. This documentation provides comprehensive reference material for all smart contracts in the system.

Architecture Overview¶

The Gemforce smart contract system consists of:

• Diamond Contracts: Core proxy contracts implementing EIP-2535
• Facets: Modular contract implementations providing specific functionality
• Libraries: Shared utility code for common operations
• Interfaces: Standard interfaces for contract interaction
• Tokens: ERC20, ERC721, and ERC1155 token implementations
• Utilities: Helper contracts for access control and security

Contract Categories¶

Core Diamond System¶

• Diamond - Main diamond proxy contract
• DiamondFactory - Factory for diamond deployment
• IdentityFactory - Identity contract factory

Business Logic Facets¶

• CarbonCreditFacet - Carbon credit management
• MarketplaceFacet - NFT marketplace operations
• MultiSaleFacet - Multi-token sales
• TradeDealManagementFacet - Trade deal lifecycle
• TradeDealOperationsFacet - Trade deal operations
• IdentityRegistryFacet - Identity management
• TrustedIssuersRegistryFacet - Trusted issuer management

Token Management Facets¶

• GemforceMinterFacet - Token minting functionality
• CollateralTokenFactoryFacet - Collateral token creation
• FeeDistributorFacet - Fee distribution logic

Utility Facets¶

• SVGTemplatesFacet - Dynamic SVG generation
• DiamondCutFacet - Diamond upgrade functionality
• DiamondLoupeFacet - Diamond introspection
• OwnershipFacet - Contract ownership management

Core Interfaces¶

• IDiamond - Diamond standard interface
• IMarketplace - Marketplace interface
• ITradeDeal - Trade deal interface
• ICarbonCredit - Carbon credit interface
• IIdentity - Identity interface
• IVariablePrice - Variable Price interface (Added based on mkdocs.yml warning)

Libraries¶

• DiamondLib - Diamond pattern utilities
• CarbonCreditLib - Carbon credit utilities
• TradeDealLib - Trade deal utilities
• MultiSaleLib - Multi-sale utilities

Getting Started¶

For Developers¶

1. Start with the Diamond documentation to understand the core architecture
2. Review the Interfaces to understand contract APIs
3. Examine specific Facets for functionality you need to integrate
4. Check Libraries for utility functions

For Integrators¶

1. Review the Integrator's Guide
2. Examine relevant interface documentation
3. Check deployment procedures in Deployment Guides: Multi-Network Deployment
4. Review security considerations in each contract's documentation

Security Considerations¶

All contracts implement: - Reentrancy protection using OpenZeppelin's ReentrancyGuard - Access control through role-based permissions - Input validation and sanitization - Event logging for transparency and monitoring

Gas Optimization¶

The contracts are optimized for gas efficiency through: - Diamond pattern for reduced deployment costs - Packed structs for storage optimization - Batch operations where applicable - Efficient algorithms in libraries

Upgrade Patterns¶

The Diamond Standard enables: - Modular upgrades through facet replacement - Backward compatibility maintenance - Gradual feature rollouts - Emergency upgrade procedures

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For detailed information about each contract, click on the links above or navigate through the documentation sections.