Real Estate Contract

Detailed Technical Documentation for Real Estate Contract

The Real Estate Contract in our asset tokenization platform is designed to manage real estate assets, particularly complex properties like buildings with multiple units or apartments. The contract structure involves a main contract for the entire property and subcontracts for individual units. This document outlines the technical, mathematical, and structural aspects of the Real Estate Contract.

Overview of Real Estate Contract Structure

1. Main Contract and Subcontracts:

   • The main contract represents the entire property, including shared areas and rights (e.g., rooftop rights).

   • Each apartment or unit within the property is represented as a subcontract, linked to the main contract.

   • The main contract can have 1-10,000 tokens, representing ownership shares in the entire property.

   • Subcontracts for individual units also hold 100-10,000 tokens, each signifying a portion of that specific unit.

2. Complex Property Structure:

   • Struct ComplexProperty to encapsulate the main property and its sub-properties (units).

   • Mapping from token IDs to ComplexProperty for tracking and management.

Contract Functions and Operations

pragma solidity ^0.8.0;

// RealEstateToken contract imported or defined in the same file

contract RealEstateComplex is RealEstateToken {
    
    struct ComplexProperty {
        Property mainProperty;
        Property[] subProperties;
    }

    mapping(uint256 => ComplexProperty) public complexProperties;

    event ComplexPropertyTokenized(address indexed to, uint256 indexed tokenId, uint256 totalTokensMinted);

    function mintComplexProperty(ComplexProperty memory newComplexProperty, address to) external onlyOwner {
        uint256 totalTokens = 0;

        // Minting process for the main property
        _mintProperty(newComplexProperty.mainProperty, to);
        totalTokens += newComplexProperty.mainProperty.numOfTokens;

        // Minting process for each sub-property (unit)
        for (uint256 i = 0; i < newComplexProperty.subProperties.length; i++) {
            _mintProperty(newComplexProperty.subProperties[i], to);
            totalTokens += newComplexProperty.subProperties[i].numOfTokens;
        }

        complexProperties[_tokenIdCounter.current()] = newComplexProperty;
        emit ComplexPropertyTokenized(to, _tokenIdCounter.current(), totalTokens);
    }

    function _mintProperty(Property memory property, address to) private {
        properties[_tokenIdCounter.current()] = property;
        _mint(to, _tokenIdCounter.current(), property.numOfTokens, "");
        _tokenIdCounter.increment();
    }

    function getComplexProperty(uint256 tokenId) external view returns (ComplexProperty memory) {
        return complexProperties[tokenId];
    }

    // Additional functions specific to complexes
}

Key Features and Mathematical Considerations

• Tokenization of Complex Properties: The minting function handles the tokenization of both the main property and its sub-properties. The total number of tokens minted is a sum of tokens for the main property and each unit.

• Property-to-Token Mapping: Establishes a clear relationship between properties and their representative tokens, enabling easy tracking and management.

• Event Emission: The ComplexPropertyTokenized event logs crucial details like the tokenId and the total tokens minted for transparency and tracking.

Conclusion

The Real Estate Contract structure is tailored to manage complex real estate properties effectively within the asset tokenization platform. By differentiating between the main property and individual units through a main contract and subcontracts, the system offers a nuanced and detailed approach to real estate asset management. This structure not only simplifies the ownership representation of complex properties but also enhances the clarity and efficiency of transactions within the real estate market on the blockchain.