Project Background
Website Details
- Synthetix is a decentralized finance (DeFi) protocol on Ethereum that allows users to trade synthetic assets.
- These assets, called “Synths,” track the value of real-world assets like currencies, commodities, and stocks.
- Synthetix offers a diverse range of assets and operates through its native token, SNX, which users can stake to mint Synths.
Website: synthetix.io
Code Details
- This Solidity code defines an ERC20 token that is mintable and burnable via a bridge contract, specifically designed to work with the Optimism Layer 2 solution. Here’s an overview of the key components and functionalities:
- Core Contract
- Semver: Handles semantic versioning with `MAJOR_VERSION`, `MINOR_VERSION`, and `PATCH_VERSION`.
- ERC20:
- Implements the standard ERC20 functionality with additional internal functions to handle minting, burning, allowances, and token transfers.
- Functions include `name`, `symbol`, `decimals`, `totalSupply`, `balanceOf`, `transfer`, `allowance`, `approve`, `transferFrom`, `increaseAllowance`, `decreaseAllowance`, `_transfer`, `_mint`, `_burn`, `_approve`, `_spendAllowance`, `_beforeTokenTransfer`, and `_afterTokenTransfer`.
- OptimismMintableERC20:
- Extends `ERC20` and `Semver` to create a mintable and burnable token for use with the Optimism bridge.
- The constructor takes parameters for the bridge address, remote token address, token name, and symbol.
- The `mint` and `burn` functions can only be called by the bridge contract.
- Implements `supportsInterface` for interface detection.
- This structure ensures that the token adheres to the ERC20 standard while adding the necessary functionalities for integration with the Optimism Layer 2 solution, specifically for minting and burning tokens via a designated bridge contract.
Audit Summary
- We observed 2 Informational issues in the smart contracts. but those are not critical.
- The security state of the reviewed smart contract, based on standard audit procedure scope, is “Secured”.
Executive Audit Summary
- According to the standard audit assessment, the Customer`s solidity smart contracts are “Secured”. This token contract does not have any ownership control, hence it is 100% decentralized.
- We used various tools like Slither, Solhint and Remix IDE. At the same time this finding is based on critical analysis of the manual audit.
Audit Report in PDF
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