What chain is Propy on?

I'm curious to know what blockchain platform does Propy utilize for its real estate transactions? Given the numerous blockchain networks available, it's essential to understand the technology foundation upon which Propy builds its decentralized ecosystem. Is Propy leveraging the capabilities of a well-established blockchain like Ethereum, or have they chosen a lesser-known yet promising alternative? The choice of blockchain significantly impacts the speed, scalability, and security of the platform, making it a crucial aspect to consider for both investors and users alike.