According to ME News, on August 29 (UTC+8), Circle announced that the cross-chain transfer protocol CCTP V1 (Legacy) will be gradually deprecated starting October 31, 2026, and fully discontinued on December 1, 2026. Applications still routing USDC through CCTP V1 contracts must initiate migration immediately. Circle stated that CCTP V2 will be the only recommended pathway, supporting standard and fast transfer modes, programmable composability features such as Hooks, and future integrations with additional blockchains. Circle has published a migration guide blog, urging developers to update their contracts and routing logic in advance to avoid disruptions in cross-chain USDC transfers. (Source: ODAILY)
Circle announces the deactivation of CCTP V1 in December 2026 and urges users to migrate to V2.
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Summary
Circle announced on August 29 that the Cross-Chain Transfer Protocol (CCTP) V1 will be phased out starting October 31, 2026, and fully deactivated on December 1, 2026. Developers are encouraged to migrate to CCTP V2, which supports fast transfers, Hooks, and future chain integrations. Circle has published a migration guide to assist with updating contracts and routing. On-chain data reveals increasing demand for efficient cross-chain USDC solutions. Traders monitoring altcoins to watch should track USDC activity as the migration progresses.
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