360 Tech Engineering

Feb 5, 2021 · Blockchain

Polkadot Overview: Architecture, Relay Chain, Parachains, Transaction Lifecycle, and NPoS Mechanism

This article explains Polkadot's cross‑chain solution by describing its relay‑chain and parachain architecture, the five‑stage transaction lifecycle, the nominated proof‑of‑stake (NPoS) validator selection process, and the growing ecosystem that enables interoperable blockchain applications.