When decentralized applications (dApps) need to simultaneously call Ethereum's smart contracts and Solana's asset data, the blockchain gateway, as a "translator" and "transportation hub," solves the interoperability problem of heterogeneous networks. This technology enables seamless communication between different blockchains, traditional systems, and dApps through protocol conversion, security verification, and traffic scheduling, becoming a key connection point in the Web3 ecosystem. How does it break data silos? And in which scenarios does it support the large-scale application of dApps?
Core Function: "Technology Transformer" for Cross-Domain Communication
The core of the blockchain gateway is to achieve trusted interaction of heterogeneous systems , and key functions include:
- Protocol Conversion : Convert the Communication Protocol of different blockchains (such as Ethereum JSON-RPC, Cosmos gRPC) into a unified interface, so that dApp developers do not need to adapt to multi-chain protocols. For example, a certain DeFi aggregator standardizes the transaction requests of ETH and BSC through the gateway, and the development efficiency is increased by 60%;
- Cross-chain data routing : Based on protocols such as IBC and XCMP, it accurately forwards cross-chain transactions. Polygon Bridge gateway realizes the two-way circulation of ETH and Polygon assets through the lock-casting mechanism, and processes more than 1 billion dollars of cross-chain transactions in a single day;
- Security and permission control : Integrated authentication and transaction signature verification functions. The compliance gateway of HashKey Exchange only allows users who have passed KYC to initiate cross-chain transfers, and intercepts 3200 abnormal transactions in 2024.
In terms of technical architecture, the gateway adopts a "protocol adaptation layer-security layer-application layer" design. The adaptation layer handles multi-chain protocol differences, the security layer verifies transaction legitimacy through zero-knowledge proofs, and the application layer provides APIs for dApps to call directly.
Application scenarios and technical practices
- Cross-chain collaboration of dApp ecosystem
- DeFi multi-chain aggregation : Aave accesses 5 chains such as Ethereum and Polygon through the blockchain gateway, and users can complete cross-chain lending in a single interface, and the utilization rate of funds is increased by 40%;
- NFT cross-platform circulation : A certain NFT market uses a gateway to achieve cross-chain transfer between ERC-721 and Solana NFT, reducing transaction fees by 70%, and supporting cross-chain royalty automatic distribution.
- Compliance and integration with legacy systems
- Financial-grade asset cross-chain : HashKey Exchange 's blockchain gateway connects the Hong Kong Monetary Authority's digital currency system with the public chain network to achieve real-time exchange of fiat currency and stablecoins. Each transaction is screened for Anti Money Laundering through the gateway.
- Enterprise data on the chain : a supply chain dApp converts the logistics data of the ERP system into a verifiable format on the chain through the gateway, and the delay of data on the chain is shortened from hours to minutes, and supports audit institutions to query the original data source through the gateway.
The blockchain gateway has become the core infrastructure for dApp scaling by breaking the "chain island effect". With the popularity of Modularization blockchain, the gateway will further support dynamic module combination and promote the deep integration of Web3 and traditional industries.