Mantle, the Layer 2 network positioning itself as a premier distribution layer between traditional finance and on-chain liquidity, has officially migrated its Super Portal from LayerZero to Chainlink’s Cross-Chain Interoperability Protocol (CCIP). The upgrade affects the native MNT token, which underpins an ecosystem valued at over $2.5 billion, and is designed to bring the highest level of institutional-grade security to every cross-chain transfer.
The migration, co-developed with centralized exchange Bybit, replaces the legacy LayerZero OFT standard with Chainlink’s Cross-Chain Token (CCT) standard. Mantle’s review of its cross-chain infrastructure concluded that CCIP’s defense-in-depth architecture—featuring 16 independent, security-reviewed node operators, a decentralized oracle network, native rate limits acting as circuit breakers, and SOC 2 Type 2 compliance—met its heightened security requirements. This move follows a growing industry trend of protocols hardening their bridges in response to billions lost from cross-chain exploits.
During the transition, the Super Portal will be temporarily suspended from approximately July 9 to July 15, 2026, though the window may slightly extend to ensure a complete and secure migration. No action is required from users: existing MNT on Ethereum and Solana remains unaffected, and all transfers will resume automatically once the Portal is back online. The upgrade grants Mantle full autonomy over its smart contracts and token pool, and sets the foundation for expanding MNT interoperability to additional chains in the future.
“As tokenized financial assets move from concept to scale, the infrastructure that carries them across chains cannot be an afterthought,” said Emily Bao, Key Advisor at Mantle. “Deprecating our legacy bridging solution and migrating the Super Portal to Chainlink CCIP brings every MNT cross-chain transfer in line with the security standards of the world’s largest financial institutions.”
Johann Eid, Chief Business Officer at Chainlink Labs, noted the industry’s broader recognition that secure-by-default infrastructure is critical for institutional adoption. Mantle’s strategy aligns with its vision of a full-stack real-world asset (RWA) layer, supported by bedrock liquidity and partnerships with leading issuers like Ethena and Ondo.
