If you’re planning to transfer USDC cross-chain, first check whether your wallet or cross-chain tool has integrated CCTP V2. According to the schedule announced by Circle, the old CCTP V1 will gradually reduce its burn limits starting October 31, and its contracts are scheduled to be paused on December 1, 2026. Apps that still call the old contracts will no longer be able to transfer USDC through this legacy route.

Migration requires app providers to update their contracts and APIs; V2 is not backward-compatible. For ordinary users, check the migration announcements from the tools you use and confirm that both the source and destination chains you plan to use are supported. If you’re unsure, check with official support first, then make a small test transfer.

Don’t interpret the retirement of the legacy route as meaning that all USDC needs to be converted. This change concerns cross-chain infrastructure and does not mean that the USDC in your wallet needs to be exchanged. If a migration page asks you to hand over your recovery phrase, leave immediately.

Cross-chain transfers still carry risks involving contracts, addresses, and delivery. A small test transfer cannot eliminate these risks.

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