Chainlink CCIP - Cross-Chain Interoperability Protocol

Chainlink CCIP is a blockchain interoperability protocol that enables developers to build secure applications that can transfer tokens, messages (data), or both tokens and messages across chains.

Given the inherent risks of cross-chain interoperability, CCIP features defense-in-depth security and is powered by Chainlink's industry-standard oracle networks which have a proven track record of securing tens of billions of dollars and enabling over $14 trillion in onchain transaction value.

CCIP's robust security framework is built upon several core components:

  • Proven Decentralized Architecture: CCIP leverages the same highly reliable infrastructure as Chainlink Data Feeds, which has enabled trillions in transaction value across hundreds of DeFi applications. Cross-chain transactions are validated by multiple decentralized oracle networks (DONs).
  • Rate Limiting: To mitigate risk, CCIP includes a rate limiting feature. This allows owners to establish and configure policies for Cross-Chain Tokens, which are then enforced on both the source and destination chains.
  • Timelocked Upgrades: All on-chain, security-critical configuration changes and core infrastructure upgrades must pass through a Role-based Access Control Timelock contract. This process provides a review period during which CCIP node operators can veto the upgrade, or, in time-sensitive situations, explicitly approve it.
  • High-Quality, Sybil-Resistant Node Operators: The system is secured by the same globally distributed, security-reviewed, public node operators that secure other Chainlink services, validate leading blockchain networks, and operate traditional Web2 infrastructure. Each independent CCIP node is run by a distinct organization with extensive DevOps expertise and rigorous private key management security practices.

To understand how Chainlink CCIP works, refer to the architecture section. If you are new to using Chainlink CCIP, read these guides before you deploy any contracts that use CCIP.

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