What network is Propy Coin on?

Could you please elaborate on the underlying network that Propy Coin operates on? I'm curious to understand the technological backbone that supports this cryptocurrency and its transactions. As a practitioner in the field of cryptocurrency and finance, I'm always interested in exploring the different platforms and frameworks that underpin these digital assets. Could you provide some insights into the network's scalability, security features, and transaction speed, as these factors are crucial for the adoption and usability of any cryptocurrency? Thank you for your time and consideration in addressing this query.