● Crypto Bridge, EVM Bridge

Decentralized Asset Exchange with EVM Bridge

React, Node, Solidity, Metamask
Ethereum, Matic, BSC
Target Audience
Cryptocurrency traders and investors, Developers and businesses, Miners and stakers, and Privacy-focused users
Hardhat, Alchemy, Cloud, GCP
Openzeppelin, react, bootstrap, web3.js
Cryptocurrency and Blockchain Industry


A crypto bridge that is compatible with the EVM allows users to transfer assets between different blockchains while preserving the benefits of the Ethereum platform, such as its security, transparency, and ability to execute complex smart contracts. This enables users to take advantage of the unique features and assets available on different blockchains while maintaining access to the robust and well-established Ethereum ecosystem.
The EVM-compatible crypto bridge plays a critical role in enabling the interoperability and growth of the decentralized finance (DeFi) ecosystem and the broader cryptocurrency industry.

Key Challenges

  • Automation: An EVM-compatible cryptobridge wallet should be automated, allowing trades and transactions to be executed and managed automatically without requiring manual intervention. This can be achieved through the use of smart contracts and cross-chain communication protocols.
  • Compatibility: Ensuring that the bridge is fully compatible with the Ethereum protocol and the EVM and can properly interact with smart contracts and decentralized applications built on Ethereum.
  • Performance: The EVM is resource-intensive, and the bridge must be able to handle the demands of executing complex smart contracts and processing large volumes of transactions.
  • Gas costs: The EVM uses a gas fee system to incentivize miners to process transactions. The bridge must effectively manage these costs to ensure fast and affordable transfers.
  • Security: As with any crypto bridge, security is a major concern, and the bridge must be designed with strong security measures to protect users' assets from theft or loss.
  • Scalability: The EVM is designed to handle a large number of transactions, but the bridge must be able to scale to meet growing demands and handle increasing amounts of traffic.
  • Usability: Making the bridge user-friendly and accessible to a wide range of users, regardless of their technical ability, is important for its success.
    In conclusion, creating an EVM-compatible cryptobridge is a complex and challenging task that requires a deep understanding of the Ethereum platform and the EVM and a commitment to security, scalability, and interoperability.

Our Approach

We followed the Hybrid Approach for Implementing this CryptoBridge dex.
The hybrid approach combines elements of both centralized and decentralized approaches, leveraging centralized infrastructure for some aspects of the bridge and decentralized infrastructure for others. This approach can offer the benefits of both approaches, but it may also introduce additional complexity and trade-offs.
Regardless of the approach taken, ensuring that the EVM-compatible cryptobridge exchange is designed with security, scalability, and interoperability in mind is important. To achieve this, the bridge must be built using robust smart contracts, implement effective cross-chain communication protocols, and be thoroughly tested and audited to identify and mitigate potential security risks.

EVM Compatible Crypto Bridge

Our Solution
The solution which we implemented consist of the following module:
Smart Contracts: We developed a smart contract that manages the functionality of token bridging. Token transfers across blockchains are taken care of through smart contracts.
Frontend: We use react for implementing fast, user-friendly, responsive and browser-compatible frontend.
Cross-chain Communication Protocols: Cross-chain communication protocols are used to enable the communication and transfer of assets between different blockchain networks.
Decentralized Infrastructure: For Decentralized infrastructure, such as a network of nodes, we used INFURA and Alchemy as Node providers, which can be used to manage and execute trades on the bridge. This infrastructure must be designed with security, scalability, and reliability in mind to ensure the smooth functioning of the bridge.
Centralized Infrastructure: For centralized infrastructure, such as a centralized server, we used Node.js and GCP, which can be used to manage and execute trades on the bridge. This infrastructure must be designed with security, reliability, and scalability in mind to ensure the smooth functioning of the bridge.
Testing: Before launching the bridge, it is important to conduct thorough testing to identify and mitigate any potential security risks. This can include security audits of the smart contracts, penetration testing of the infrastructure, and stress testing of the bridge under high-load conditions.

Key Features

Our Crypto Bridge is Decentralized.
Security is a key feature of a crypto bridge.
Since every transaction takes place on the blockchain, there is a high level of transparency.
Releasing funds on the destination blockchain is automated.

Our Result

  • Therefore, our Bridge uses both on-chain and off-chain processing to transfer an asset from one blockchain to another. And for user convenience, we created a very user-friendly interface in react.
  • As a result, all of the asset's minting, transferring, and burning is handled by on-chain smart-contract logic written in solidity.
  • And for off-chain computations such as event listing and keeper, we used node.js. We implemented an off-chain automated keeper in node.js and used GCP as a cloud service.
  • So, as a result of this approach, we build the crypto bridge, which is secure, scalable, and reliable, enabling the transfer of assets between different blockchain networks while maintaining compatibility with the Ethereum platform and the EVM.

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