In the current blockchain world, fragmentation is a major challenge. The independence of each chain makes cross-chain asset and data transfer complex and inefficient, resulting in high costs and delays for developers and users. In the update of Season 7, OP Superchain places "Interoperability" as the core pillar of its superchain product vision, aiming to solve this issue.

With Superchain's interoperability, assets and data can be easily transferred across chains. Developers can fully utilize the resources of the entire superchain, while chain deployers can enjoy the massive network effects brought by the superchain. Such a unified and scalable ecosystem will continuously create new scenarios and drive blockchain innovation and development.

Breaking Fragmentation: Superchain Advantages

Ethereum and its Layer 2 ecosystem face fragmentation challenges. In the traditional blockchain model, assets and data often need to be transferred across chains through Ethereum Layer 1, a process that is both expensive and slow. Meanwhile, developers need to "cold start" their projects on expensive and complex multi-chain infrastructure, and users face fragmented and chaotic user experiences.

However, by implementing native inter-chain interoperability, Superchain breaks this fragmented situation, allowing assets and data to flow across chains while improving developers' resource utilization efficiency. Mint Blockchain, as a member of Superchain, is actively promoting this innovation, helping users enjoy a smoother and more efficient cross-chain experience.

How Does Superchain Work?

OP Superchain is an integrated multi-chain network structure composed of multiple Layer 2 networks built on OP Stack. OP Superchain provides stronger scalability, low latency, and higher transaction throughput, with each chain sharing the same security model and governance mechanism, enabling low-cost cross-chain communication and core interaction functions such as asset swapping.

OP Interop is an on-chain interoperability function based on the OP Stack technical framework, providing the ability to read messages and transfer assets across the superchain through low-latency, secure message passing. Superchain is built on an interoperability protocol and implements a single mesh network with complete dependencies. Superchain Interop includes protocol-layer messaging and Superchain ERC20 token standards. Once Superchain Interop goes live, it will achieve 2-second cross-chain settlement, minimize fragmentation, unify liquidity, and maximize capital efficiency and utility.

Universal Interoperability Standards

Superchain's multi-chain architecture requires advanced technical capabilities to ensure a secure communication layer within the platform. This layer will consist of a message passing protocol, Superchain token standard, interoperability fault proof mechanism, and a set of interoperable chains.

• Message Passing Protocol allows the creation and sending of cross-chain messages. Completing a cross-chain message requires two events: an initiating transaction on the source chain and an executing transaction on the target chain.
• SuperchainERC20 is the universal token standard for OP Stack — a minimal extension of the ERC20 standard that enables tokens to be fungible and movable across Superchain. Without a standardized security model, bridged assets might not be mutually replaceable. SuperchainERC20 is built on the message passing protocol and is the current trust-minimized bridging solution.
• Interoperability Fault Proof Mechanism is a proof system shared among chains within Superchain. This mechanism interconnects the security of chains, thereby supporting fungible assets in the entire Superchain ecosystem.
• Interoperable Chain Collection includes chains configured with "dependencies" — meaning they read data from other chains. For example, OP Mainnet reads data from Mode and Base, Mode reads data from Base and OP Mainnet, and Base reads data from OP Mainnet and Mode. These three chains together form an interoperable chain collection.

Superchain Interoperability Architecture

The composition of OP Stack nodes determines its interoperability capabilities. Among them, OP Supervisor plays the core role in interoperability services.

• OP Supervisor is responsible for recording and verifying cross-chain log events and obtaining L2 transaction security information from the L1 consensus layer.
• Through OP Supervisor, each chain in Superchain can synchronize and verify each other's transaction information, thereby achieving efficient cross-chain message transmission.

Superchain Interoperability Advantages

Superchain's interoperability provides multiple significant advantages:

• Low Latency and Efficiency: Achieve fast message transmission and asset transfer through optimized cross-chain communication mechanisms, enhancing user experience.
• Cost-Effectiveness: Adopt efficient settlement mechanisms to reduce gas costs in cross-chain interactions, making transactions more economical
• Seamless Developer Experience: Developers can leverage Superchain's native interoperability to easily deploy applications and assets across different chains without complex cross-chain bridging infrastructure.
• Shared Security: Based on L1 shared security and OP Stack design, ensure the reliability of cross-chain interactions and reduce risks from different chain verification mechanisms.

SuperchainERC20: The Ideal Choice for Cross-Chain Tokens

As a crucial part of Superchain interoperability, SuperchainERC20 provides a concise and reliable solution for cross-chain tokens. With the native Interop protocol, assets can move quickly and seamlessly between chains, driving real-time cross-chain DeFi and seamless chain-to-chain exchanges.

Mint Blockchain's native asset $MINT is the first native token on Superchain applying the SuperchainERC20 standard. USDT0 is one of the first interoperable stablecoins deployed on Superchain, an omnichain version of USDT that is natively compatible across multiple chains and backed 1:1 by USDT on Ethereum. It has been launched on OP Mainnet and Ink, with plans to expand to more chains, providing Superchain with fast, secure, and low-cost cross-chain transfer capabilities.

Mint Blockchain: Leveraging Interoperability Innovation

As a member of Superchain, Mint Blockchain can utilize this innovative interoperability mechanism to provide users with a more efficient and secure cross-chain experience. Mint Blockchain's assets and applications will be able to interact seamlessly with projects on other Superchains, and users will enjoy low-cost, high-speed, and secure cross-chain transactions.

Additionally, Mint is building a liquidity aggregation product called Mint Liquid, which is a liquidity product supporting multi-chain Non-Fungible Token and Token asset trading, built by the Mint team based on Superchain, ERC7683, Uniswap, Across Protocol, and other protocols. It achieves multi-chain liquidity aggregation and asset cross-chain interoperability. The Mint Liquid product will greatly improve the trading efficiency of on-chain crypto assets, reduce on-chain transaction friction costs, better provide price discovery capabilities for new crypto assets, and promote the prosperity of the on-chain trading market.

Driving the Future of Web3

Superchain's interoperability not only breaks the fragmentation of cross-chain liquidity but also provides a more efficient and secure infrastructure for the DeFi and Web3 ecosystem. Through native interoperability protocols, assets and data can flow freely, developers can more easily build cross-chain applications, and users can enjoy smoother transaction experiences. As part of the Superchain ecosystem, Mint Blockchain is actively driving this transformation, using a unified liquidity layer to enhance the efficiency and scalability of on-chain interactions. As Superchain's interoperability continues to advance, Mint Blockchain will work with Superchain to create a new future for Web3, driving innovation and popularization of Web3 and on-chain applications.