Polkadot - #DOTUSDT

Relay Chain: Polkadot’s “heart,” helping to create consensus, interoperability and shared security across the network of different chains;
Parachains: independent chains that can have their own tokens and be optimized for specific use cases;
Parathread: similar to parachains but with flexible connectivity based on an economical pay-as-you-go model;
Bridges: allows parachains and parathreads to connect and communicate with external blockchains like Ethereum.