If you look at the manifesto, in phase II you will see involves a decentralized compute network overlayed with a privacy focused crypto-currency.
You definitely need to create your own network protocol. You can't just request arbitrary Bitcoin node to perform specific computation just for you.
To save time and energy, almost thinking instead of developing my own crypto currency, might be best to just use bitcoin instead. What do you think?
There are some project claim to create decentralized AI. I expect most of them are either buzzword, centralized or mere theory, but you might want to research about those project.