MLM & Blockchain Development with PHP and React

I'm in need of skilled developers for a comprehensive MLM website integrated with Blockchain technology.

Key Features:
- User Management: The website should allow for easy management of users, including tracking of their activities and rewards.
- Sales Tracking: We need a robust system that can track sales data and generate reports for analysis.
- Payment Integration: It should support various payment gateways for seamless transactions.
- Blockchain Integration: We're looking to implement Blockchain technology with the following functionalities:
- Smart Contracts: Implement automated contracts that execute when predefined conditions are met.
- Transaction Ledger: A transparent transaction ledger that records all transactions.
- Token Creation: Develop a unique token system for secure transactions within the MLM network.

Ideal Skills:
- Strong PHP development experience
- Proficiency in Blockchain technology
- Previous experience with MLM website development
- Payment gateway integration expertise
- Knowledge of creating smart contracts

Please submit your portfolio along with the estimated cost and timeline for this project.