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Relay Chain

The security and coordination layer of Polkadot

What is Relay Chain?

The central chain in the Polkadot network responsible for securing all connected parachains and enabling cross-chain communication. The Relay Chain doesn't run smart contracts or applications itself — it's purely infrastructure. Validators stake DOT to secure the Relay Chain, and that security is shared across every parachain. Think of it as the foundation that makes the entire multi-chain architecture possible.

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In plain words

"The foundation and security system of a building — it doesn't run the businesses inside, but it keeps them all safe and connected."

How it works

Key takeaways

  • Core coordination layer of the network

  • Validators secure all connected parachains

  • Handles cross-chain message passing

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Real-world example

Polkadot's Relay Chain doesn't run smart contracts or DeFi. It validates blocks for all parachains, ensuring they share the same security guarantee.

Related terms

Parachain

Application-specific blockchain connected to Polkadot

Polkadot (DOT)

Multi-chain protocol for blockchain interoperability

On-Chain Governance

Token-holder voting on protocol decisions

Staking

Locking tokens to earn rewards and secure networks

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