Odaily Planet Daily reports that Circle has announced that the cross-chain transfer protocol CCTP V1 (Legacy) will be gradually phased out starting October 31, 2026, and fully discontinued on December 1, 2026. Applications still routing USDC through CCTP V1 contracts must initiate migration immediately. Circle states 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.
Circle to Deprecate CCTP V1 by December 1, 2026, Urges Migration to V2
KuCoinFlashShare
Summary
Circle announced on-chain that the Cross-Chain Transfer Protocol (CCTP V1) will be deprecated starting October 31, 2026, and fully shut down by December 1, 2026. Developers are encouraged to migrate to CCTP V2, which supports standard and fast transfer modes, Hooks, and future chain integrations. A migration guide is available to assist with updating contracts and routing before the protocol update deadline.
Source:Show original
Disclaimer: The information on this page may have been obtained from third parties and does not necessarily reflect the views or opinions of KuCoin. This content is provided for general informational purposes only, without any representation or warranty of any kind, nor shall it be construed as financial or investment advice. KuCoin shall not be liable for any errors or omissions, or for any outcomes resulting from the use of this information.
Investments in digital assets can be risky. Please carefully evaluate the risks of a product and your risk tolerance based on your own financial circumstances. For more information, please refer to our Terms of Use and Risk Disclosure.