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Core Components

MANTRA Chain is built on a modular architecture combining:
  • Cosmos SDK: Flexible, scalable, and modular framework
  • EVM Module: Ethereum Virtual Machine compatibility
  • CometBFT: Consensus layer for validator set management
  • IBC: Inter-Blockchain Communication protocol

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Virtual Machines

A Virtual Machine (VM) emulates a computer system, enabling code to run securely. In the context of blockchain, VMs serve as the runtime environment where smart contract code is executed, ensuring:
  • Secure execution: Isolated from the host system
  • Deterministic behavior: Same input always produces same output
  • Isolated execution: Contracts cannot interfere with each other

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How VMs Coexist

The EVM Module was developed to implement the EVM standard for Cosmos SDK-based chains.

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Why Add EVM?

Adding an EVM module to Cosmos SDK allows us to:
  • Attract Solidity developers: The majority of developers in the space use Solidity/EVM
  • Further develop the ecosystem: Enable existing EVM tooling and libraries
  • Enable EVM-compatible smart contracts: Deploy contracts written for Ethereum without modification

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Data Flow

The EVM module integrates seamlessly with Cosmos SDK modules through:
  1. Precompiles: Go code that directly interacts with Cosmos SDK module states
  2. Message routing: Cosmos SDK’s message routing system
  3. State management: Shared state between EVM and Cosmos modules

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Module Interactions

All modules interact through the Cosmos SDK’s message routing system, allowing:
  • Cross-module transactions: Messages can interact with multiple modules
  • Atomic operations: All messages in a transaction succeed or fail together
  • State consistency: Guaranteed consistency across module states

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Architecture Diagram

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Next Steps