Chainlink CCIP Release Notes

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.