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Chainlink CCIP Release Notes

Chainlink CCIP is GA - 2024-04-24

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.

Support for WETH transfers and gas limit mainnet increase - 2024-04-11

WETH and support of Lock and Unlock mechanism

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:

  • Ethereum Mainnet to/from Arbitrum Mainnet.
  • Ethereum Mainnet to/from Optimism Mainnet.
  • Arbitrum Mainnet to/from Optimism Mainnet.

For a specific lane configuration, go to the Mainnet Supported Networks page. For more detailed information on the Lock and Unlock mechanism and its applications, read the Token Pools section.

Gas limit increase on mainnet

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.

v1.0.0 deprecated on mainnet - 2024-04-01

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.

Wemix and Kroma - 2024-03-11

Chainlink CCIP is publicly available on Wemix and Kroma for both mainnet and testnet.

v1.0.0 deprecated on testnet - 2024-02-07

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.

v1.2.0 release on mainnet - 2024-01-15

  • 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.

  • Added support for USDC transfers. USDC transfers are currently supported on the following lanes:

    • From Ethereum Mainnet to Avalanche Mainnet.
    • From Ethereum Mainnet to Arbitrum Mainnet.
    • From Ethereum Mainnet to Base Mainnet.
    • From Ethereum Mainnet to Optimism Mainnet.
    • From Optimism Mainnet to Base Mainnet.
    • From Optimism Mainnet to Ethereum Mainnet.
    • From Avalanche Mainnet to Ethereum Mainnet.
    • From Base Mainnet to Arbitrum Mainnet.
    • From Base Mainnet to Optimism Mainnet.
    • From Base Mainnet to Ethereum Mainnet.

    Refer to the Supported Networks 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 mainnets. These changes are detailed in the Service Limits documentation.

  • To interact with CCIP v1.2.0 , use the @chainlink/contract-ccip npm package.

Arbitrum Sepolia - 2023-12-15

Chainlink CCIP is publicly available on Arbitrum Sepolia.

See the CCIP testnet configuration page for more information.

v1.2.0 release on testnet - 2023-12-08

  • 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.

  • Added support for USDC transfers. USDC transfers are currently supported on the following lanes:

    • From Optimism Goerli to Avalanche Fuji.
    • From Optimism Goerli to Base Goerli.
    • From Avalanche Fuji to Optimism Goerli.
    • From Avalanche Fuji to Base Goerli.
    • From Base Goerli to Optimism Goerli.
    • From Base Goerli to Avalanche Fuji.

    Refer to the Supported Networks 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 - 2023-11-17

Arbitrum Goerli is no longer supported.

Arbitrum Sepolia support will be added at a later date.

New mainnets - 2023-09-27

Added BNB and Base mainnets:

  • BNB mainnet.
  • Base mainnet.

See the supported networks page for more information.

New mainnet - 2023-09-21

Added Arbitrum mainnet:

  • Arbitrum mainnet.

See the supported networks page for more information.

New testnets - 2023-08-25

Added BNB and Base testnets:

  • BNB testnet.
  • Base Goerli.

See the supported networks page for more information.

Testnet GA release - 2023-07-20

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.

Mainnet Early Access - 2023-07-17

Chainlink CCIP is available on the following networks:

  • Ethereum mainnet.
  • Optimism mainnet.
  • Avalanche mainnet.
  • Polygon mainnet.

See the supported networks page for more information.

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