Polkadot

This track covers the network, not the runtime: what the Relay Chain provides, what a parachain receives, what access to that security costs, and how chains talk over XCM.

It runs alongside the Substrate track, which supplies its technical substance. Both converge on a shared capstone: an application chain genuinely operated.

The track where you learn not to produce your own security — and to know exactly what you are borrowing.