Circle makes CCTP V2 canonical; V1 deprecation begins with 10-month transition period

Circle/CCTP / Circle Payments Network

Circle announced that CCTP V2 is now the canonical version of the protocol. CCTP V1 entered a deprecation period of approximately 10 months, with manual phase-out scheduled to begin on July 31, 2026. The change solidifies CCTP V2 as the long-term standard for cross-chain USDC transfers.

• CCTP V2 designated as canonical protocol with V1 entering planned deprecation.
• 10-month transition window allows applications time to migrate from V1 to V2.
• Manual phase-out of V1 begins July 31, 2026.