Chainlink CCIP Release Notes

Chainlink CCIP is publicly available on ZKsync mainnet and testnet.

• Mainnet lane details
• Testnet lane details

Chainlink CCIP is publicly available on Metis mainnet and testnet.

• Mainnet lane details
• Testnet lane details

Chainlink CCIP is publicly available on Blast mainnet and testnet.

• Mainnet lane details
• Testnet lane details

Chainlink CCIP is publicly available on Mode mainnet and testnet.

• Mainnet lane details
• Testnet lane details

Chainlink CCIP is publicly available on Gnosis mainnet.

• Mainnet lane details

Chainlink CCIP is publicly available on Celo mainnet and Alfajores testnet.

• Mainnet lane details
• Testnet lane details

Chainlink CCIP is publicly available on the Polygon Amoy testnet.

• Testnet lane details

Chainlink CCIP is now Generally Available (GA) on mainnet and testnet.

To support your development and implementation needs, we encourage you to reach out to our team of experts for guidance and support. For expert advice, visit the Chainlink CCIP Contact form.

Additionally, the Chainlink CCIP local simulator is available to enhance your development workflow with CCIP. This tool allows you to simulate Chainlink CCIP functionality locally within your Hardhat and Foundry projects. The simulator is designed so you can test your contracts locally and transition smoothly to test networks without any modifications.

Chainlink's CCIP now supports WETH (Wrapped Ether) transfers through the Lock and Unlock token mechanism.

This feature allows CCIP to securely lock tokens on the source blockchain and subsequently release an equivalent amount of tokens on the destination blockchain, facilitating seamless cross-chain transfers of WETH. The introduction of this mechanism enables WETH transfers across several key lanes.

For a specific lane configuration, see the Supported Networks page. For more detailed information about the Lock and Unlock mechanism and its applications, read the Token Pools page.

The maximum gasLimit that you can set for CCIP messages on mainnet has been increased to 3,000,000 gas units. The change has been documented in the Service Limits page.

CCIP v1.0.0 is no longer supported on mainnet. You must use the new router addresses listed in the CCIP v1.2.0 configuration page.

Chainlink CCIP is publicly available on Wemix and Kroma for both mainnet and testnet. See the Supported Networks page for network details.

CCIP v1.0.0 is no longer supported on testnet. You must use the new router addresses listed in the CCIP v1.2.0 configuration page.

CCIP v1.0.0 has been deprecated on mainnet. You must use the new router addresses listed in this page before March 31st, 2024. Please note that there is no change to the router interface. The CCIP v1.0.0 mainnet routers will continue to function in parallel until March 31st, 2024, but we highly recommend switching to the v1.2.0 routers as soon as possible. If you currently use CCIP v1.0.0, use the @chainlink/contracts-ccip npm package version 0.7.6. To migrate to v1.2.0, use version 1.2.1 of the npm package or later. Please refer to the release notes for a comprehensive overview of the enhancements and new features in v1.2.0.

• There is no change to the router interface, but you must use the new router addresses listed in the CCIP v1.2.0 configuration page.
• USDC transfers are currently supported on several lanes. See the the Supported Networks page to get a specific lane's token addresses and rate limits.
• The message sequencing process is simplified in CCIP message handling by removing the strict sequencing flag from the extraArgs field in CCIP messages.
• The gas limit and maximum message data length for CCIP messages have been adjusted on mainnets. These changes are detailed in the Service Limits documentation.
• To interact with CCIP v1.2.0, use the @chainlink/contract-ccip npm package.

Chainlink CCIP is publicly available on Arbitrum Sepolia. See the CCIP testnet configuration page for more information.

CCIP v1.0.0 has been deprecated on testnet. You must use the new router addresses listed in the CCIP v1.2.0 configuration page before January 31st, 2024. Please note that there is no change to the router interface. The CCIP v1.0.0 testnet routers will continue to function in parallel until January 31st, 2024, but we highly recommend switching to the v1.2.0 routers as soon as possible. If you currently use CCIP v1.0.0, use the @chainlink/contracts-ccip npm package version 0.7.6. To migrate to v1.2.0, use version 1.2.1 of the npm package or later.

• There is no change to the router interface, but you must use the new router addresses listed in the CCIP v1.2.0 configuration page. USDC transfers are currently supported on several lanes. See the the Supported Networks page to get a specific lane's token addresses and rate limits.
• We've simplified the message sequencing process in our CCIP message handling by removing the strict sequencing flag from the extraArgs field in CCIP messages.
• The gas limit and maximum message data length for CCIP messages have been adjusted on testnets. These changes are detailed in the Service Limits documentation.
• To interact with CCIP v1.2.0 , use the @chainlink/contract-ccip npm package.

Arbitrum Goerli is no longer supported. Arbitrum Sepolia support will be added at a later date.

Chainlink CCIP is publicly available on the BNB Chain and Base mainnets. See the supported networks page for more information.

Chainlink CCIP is publicly available on Arbitrum Mainnet. See the CCIP testnet configuration page for more information.

Chainlink CCIP is publicly available on the BNB Chain and Base mainnets. See the supported networks page for more information.

Chainlink CCIP is publicly available on the following testnet chains:

• Ethereum Sepolia
• Optimism Goerli
• Avalanche Fuji
• Arbitrum Goerli
• Polygon Mumbai

See the supported networks page for more information.

Chainlink CCIP is available in early access on the following mainnet chains:

• Ethereum Sepolia
• Optimism Goerli
• Avalanche Fuji
• Arbitrum Goerli
• Polygon Mumbai

See the supported networks page for more information.