Release Notes - Stablecoins - 2025

2025 release notes for Stablecoins.

September 2025

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2025.09.25

Added support for CCTP V2 on the Ink blockchain.

Documentation additions

Added a quickstart to showcase how to transfer USDC on Ink:

• Quickstart: Set up and transfer USDC on Ink

Documentation updates

Updated the following documentation to reflect support for Ink mainnet and testnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces
• CCTP Block Confirmations
• CCTP Fees

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2025.09.23

Added support for CCTP V2 on the Plume mainnet.

Documentation additions

Added a quickstart to showcase how to transfer USDC on Plume:

• Quickstart: Set up and transfer USDC on Plume

Documentation updates

Updated the following documentation to reflect support for Plume mainnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces
• CCTP Block Confirmations
• CCTP Fees

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2025.09.17

Added support for CCTP V2 on the XDC mainnet.

Documentation additions

Added a quickstart to showcase how to transfer USDC on XDC:

• Quickstart: Set up and transfer USDC on XDC

Documentation updates

Updated the following documentation to reflect support for XDC mainnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces
• CCTP Block Confirmations
• CCTP Fees

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2025.09.16

• Added support for USDC on the HyperEVM blockchain.
• Added support for CCTP V2 on the HyperEVM blockchain.

Documentation additions

Added a quickstart to showcase how to transfer USDC on HyperEVM:

• Quickstart: Set up and transfer USDC on HyperEVM

Documentation updates

Updated the following documentation to include USDC contract addresses for HyperEVM mainnet and testnet:

• USDC Contract Addresses

Updated the following documentation to reflect support for HyperEVM mainnet and testnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces
• CCTP Block Confirmations
• CCTP Fees

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2025.09.04

• Added support for USDC on the Plume blockchain.
• Added support for CCTP V2 on the Plume testnet.

Documentation updates

Updated the following documentation to include USDC contract addresses for Plume mainnet and testnet:

• USDC Contract Addresses

Updated the following documentation to reflect support for Plume testnet:

• CCTP EVM Contracts and Interfaces
• CCTP Supported Chains and Domains

August 2025

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2025.08.26

• Added support for USDC on the XDC blockchain.
• Added support for CCTP V2 on the XDC Apothem testnet.

Documentation updates

Updated the following documentation to include USDC contract addresses for XDC mainnet and testnet:

• USDC Contract Addresses

Updated the following documentation to reflect support for XDC Apothem testnet:

• CCTP EVM Contracts and Interfaces
• CCTP Supported Chains and Domains

July 2025

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2025.07.24

• Added support for CCTP V2 on the Sei mainnet.
• Updated CCTP V2 Fast Transfer fee and standard message attestation time for Codex.

Documentation additions

Added the following Quickstart to showcase how to transfer USDC on the Sei testnet:

• Quickstart: Set up and transfer USDC on Sei

Documentation updates

Updated the following documentation to reflect support for Sei:

• CCTP Overview
• CCTP EVM Contracts and Interfaces
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP Fees

Updated the following documentation to reflect updates to Codex:

• CCTP Block Confirmations
• CCTP Fees

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2025.07.23

Added support on CCTP V2 for USYC transfers between Ethereum and BNB Smart Chain.

Documentation updates

Updated documentation to reflect support for USYC transfers between Ethereum and BNB Smart Chain using CCTP V2:

• CCTP V2 Supported Chains and Domains
• CCTP V2 Block Confirmations

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2025.07.10

• Added support for USDC on the Sei mainnet and testnet.
• Added support for CCTP V2 on the Sei testnet.
• Added support for CCTP V2 Standard Transfer fee switch.

Documentation updates

Updated the following documentation to reflect support for USDC on Sei and CCTP V2 on Sei testnet:

• USDC Contract Addresses
• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces

Updated the following documentation to reflect support for the CCTP V2 Standard Transfer fee switch, including an explainer, a new getMinFeeAmount function, and a new security audit, respectively:

• CCTP Standard Transfer Fee Switch
• CCTP EVM Contracts and Interfaces
• CCTP FAQ

June 2025

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2025.06.27

Added support for CCTP V2 on the Polygon PoS mainnet.

Documentation updates

Updated the following documentation to reflect support for Polygon:

• CCTP Overview
• CCTP EVM Contracts and Interfaces
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP Fees

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2025.06.26

Added support for CCTP V2 on the Unichain mainnet.

Documentation updates

Updated the following documentation to reflect support for Unichain mainnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces
• CCTP Fees

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2025.06.24

Added support for CCTP V2 on the Codex mainnet.

Documentation updates

Updated the following documentation to reflect support for Codex mainnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces
• CCTP Fees

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2025.06.20

Added support for CCTP V2 on the Solana mainnet.

Documentation updates

Updated the following documentation to reflect support for Solana mainnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces
• CCTP Solana Programs and Interfaces
• CCTP Fees

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2025.06.13

Added support for CCTP V2 on the OP Mainnet.

Documentation updates

Updated the following documentation to reflect support for OP Mainnet:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces

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2025.06.12

• Added support for USDC on the Ripple Ledger (XRPL).
• Added a Quickstart for USDC on XRPL, featuring a script that demonstrates how to set up a USDC trustline, and prepare the wallet to receive USDC.

Documentation updates

Updated the following documentation to reflect support for XRPL:

• USDC Contract Addresses - Mainnet
• USDC Contract Addresses - Testnet

Documentation additions

Added the following documentation to reflect support for XRPL:

• Quickstart: Set up a USDC trustline on XRPL

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2025.06.10

• Added support for CCTP V2 on the following chains: Unichain Sepolia, Solana Devnet, Polygon PoS Amoy.
• Added a new CCTP V2 endpoint that retrieves both Fast and Standard Transfer fees, and deprecated the endpoint that retrieves Fast Transfer fees only.

Documentation updates

Updated the following documentation to reflect support for Unichain Sepolia testnet:

• CCTP EVM Contracts and Interfaces
• CCTP Supported Chains and Domains

Updated the following documentation to reflect support for the Solana Devnet:

• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP Solana Programs and Interfaces

Updated the following documentation to reflect support for the Polygon PoS Amoy testnet:

• CCTP EVM Contracts and Interfaces
• CCTP Supported Chains and Domains

API additions

Added the following CCTP V2 API endpoint:

• GET /v2/burn/USDC/fees/:sourceDomainId/:destDomainId

API updates

Deprecated the following CCTP V2 API endpoint:

• GET /v2/fastBurn/USDC/fees/:sourceDomainId/:destDomainId

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2025.06.09

• Added support for USDC and CCTP V2 on the Codex mainnet and testnet.
• Added support for CCTP V2 on the OP Sepolia testnet.

Documentation updates

Updated the following documentation to reflect support for Codex chain and OP Sepolia testnet:

• USDC Contract Addresses
• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces

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2025.06.03

• Added support for USDC bridge-to-native upgrade on World Chain.
• Added support for CCTP V2 on World Chain mainnet and Sepolia testnet.

Documentation updates

Updated the following documentation to reflect support for World Chain:

• USDC Contract Addresses
• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces

May 2025

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2025.05.13

• Added support for USDC bridge-to-native upgrade on Sonic.
• Added CCTP V2 support for Sonic.

Documentation additions

Added the following documentation on Sonic support:

• Quickstart: Set up and Transfer USDC on Sonic

Documentation updates

Updated the following documentation to reflect support for Sonic:

• USDC Contract Addresses
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces

March 2025

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2025.03.27

The following Circle Products have been renamed:

Previous Product name	New Product name
Cross-Chain Transfer Protocol	CCTP

This name change is part of a broader effort to simplify and align our product naming, creating a more unified developer experience across the Circle platform.

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2025.03.26

Added support for CCTP V2 on the Linea mainnet.

Documentation updates

Updated the following documentation to reflect CCTP V2 support on the Linea mainnet:

• CCTP Supported Chains and Domains
• CCTP EVM Contracts and Interfaces

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2025.03.21

Added support for CCTP V2 on the Linea Sepolia testnet.

Documentation updates

Updated the following documentation to reflect CCTP V2 support on the Linea Sepolia testnet:

• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces

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2025.03.17

Added support for USDC on the Linea blockchain.

Documentation updates

Updated the following documentation to include USDC contract addresses for Linea:

• USDC Contract Addresses

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2025.03.11

Added CCTP V2 support, featuring Fast Transfer mode, to the following mainnets:

• Avalanche
• Base
• Ethereum

Documentation additions

• Added the CCTP V2 white paper URL to the CCTP Getting Started page.
• Added CCTP V2 fast transfer support to the CCTP Sample App.

Documentation updates

Updated the following documentation to reflect CCTP V2 support on the newly added mainnets:

• CCTP Overview
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces
• CCTP Fees
• CCTP FAQ

February 2025

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2025.02.28

Documentation updates

Removed the Ecosystem Catalog. For sample apps, visit the Sample Projects page.

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2025.02.21

Documentation updates

Added CCTP V2 fast transfer support to the CCTP Quickstart:

• Quickstart: Transfer USDC on testnet from Ethereum to Avalanche

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2025.02.11

Added support for CCTP V1 on the Unichain blockchain.

Documentation updates

Updated the following documentation to reflect CCTP V1 support on Unichain:

• CCTP Overview
• CCTP Supported Blockchains V1
• CCTP Block Confirmations V1
• CCTP EVM Contracts and Interfaces V1
• CCTP Chain Domains V1

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2025.02.04

Launched CCTP V2, featuring Fast Transfer mode, on the following testnets:

• Avalanche Fuji
• Base Sepolia
• Ethereum Sepolia

Documentation additions

Added the following documentation to reflect support for CCTP V2:

• CCTP API Hosts and Endpoints
• CCTP Supported Chains and Domains
• CCTP Fees

Documentation updates

Updated the following documentation to reflect CCTP V2 support:

• CCTP Overview
• CCTP Message Passing
• CCTP Supported Chains and Domains
• CCTP Block Confirmations
• CCTP EVM Contracts and Interfaces
• CCTP limits for burning and minting
• CCTP Message Format
• CCTP FAQ

API additions

Added the following CCTP V2 API endpoints:

• GET /v2/publicKeys
• GET /v2/messages/:sourceDomainId
• POST /v2/reattest/:nonce
• GET /v2/fastBurn/USDC/allowance
• GET /v2/fastBurn/USDC/fees/:sourceDomainId/:destDomainId

January 2025

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2025.01.30

Added a Quickstart for USDC on Aptos, featuring a web app that demonstrates how to transfer USDC.

Documentation additions

• Quickstart: Set up and transfer USDC on Aptos

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2025.01.23

Launched the Paymaster solution.

Documentation additions

Added the following documentation to support the Paymaster launch:

• Paymaster Overview
• Quickstart: Circle Paymaster
• Paymaster Addresses and Events

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2025.01.09

Added support for CCTP V1 on the Aptos blockchain.

Documentation additions

Added the following documentation to reflect CCTP V1 support on Aptos:

• CCTP Aptos Packages and Interfaces
• Quickstart: Transfer USDC on testnet between Aptos and Base using CCTP V1

Documentation updates

Updated the following documentation to reflect CCTP V1 support on Aptos:

• CCTP Overview
• CCTP Message Passing V1
• CCTP Supported Blockchains V1
• CCTP Block Confirmations V1
• CCTP Chain Domains V1

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2025.01.07

Added support for USDC on the Aptos mainnet.

Documentation updates

Updated the following documentation to include USDC contract addresses for Aptos:

• USDC Contract Addresses