# Technical Reference

- [Smart Contract Architecture](https://docs.mudigital.net/technical-reference/smart-contract-architecture.md): Mu Digital’s smart contract architecture is designed for modularity, security, and seamless DeFi composability. It is organized into three primary contract categories:
- [ERC-20 Contracts](https://docs.mudigital.net/technical-reference/smart-contract-architecture/erc-20-contracts.md): Mu Digital’s token suite is built around ERC-20 standards, ensuring broad compatibility with the DeFi ecosystem while maintaining clear roles for each asset.
- [Staking Contracts](https://docs.mudigital.net/technical-reference/smart-contract-architecture/staking-contracts.md)
- [Protocol Contracts](https://docs.mudigital.net/technical-reference/smart-contract-architecture/protocol-contracts.md): Protocol contracts contain the core system logic for Mu Digital.
- [Smart Contract Addresses](https://docs.mudigital.net/technical-reference/smart-contract-architecture/smart-contract-addresses.md)
- [Smart Contract Audits](https://docs.mudigital.net/technical-reference/smart-contract-audits.md)
- [Security](https://docs.mudigital.net/technical-reference/security.md)
- [Roles and Permissions](https://docs.mudigital.net/technical-reference/roles-and-permissions.md)


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