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Polkadot

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description Polkadot Overview

Polkadot is a multi-chain blockchain framework that allows different blockchains (Parachains) to share the same security and infrastructure. It was designed with interoperability as a core principle, enabling seamless communication between different chains. Developers can build specialized blockchains for specific use cases while remaining connected to the broader Polkadot ecosystem. Its Relay Chain provides the consensus and security, while Parachains provide the diverse functionality of various dApps.

help Polkadot FAQ

What is the Relay Chain's role in Polkadot?

Polkadot's Relay Chain provides shared security and coordinates connected parachains rather than hosting every application directly. Validators stake DOT on the Relay Chain and validate the network's consensus and parachain proofs.

How do parachains differ from ordinary blockchains connected by a bridge?

A Polkadot parachain is designed to connect to the Relay Chain as part of the same multi-chain system, with shared security and native cross-chain messaging options. A conventional bridge between Ethereum and another chain generally introduces a separate bridge contract and its own security assumptions.

What is DOT used for in the Polkadot network?

DOT is used for staking, governance, and purchasing or allocating network coretime under Polkadot's current terminology. It is therefore more than a transaction token, although its practical role depends on the network version and governance rules in use.

How does Polkadot's Nominated Proof-of-Stake system work?

In NPoS, validators secure the Relay Chain while nominators support validator candidates with their DOT stake. Polkadot's support documentation distinguishes the Relay Chain validators from collators, which produce blocks for individual parachains.

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