Project Background

• This Solidity contract implements a standard ERC20 token with additional functionality for a crowdsale. Let’s break it down:
• ERC20Basic:
  • Interface defining essential ERC20 functions: `totalSupply()`, `balanceOf()`, and `transfer()`.
  • It emits a `Transfer` event upon successful token transfer.
• SafeMath Library:
  • A library providing arithmetic functions with safety checks to prevent overflow and underflow.
• BasicToken:
  • Inherits from ERC20Basic and uses SafeMath library.
  • Implements the `totalSupply()` and `balanceOf()` functions.
  • Implements the `transfer()` function with safety checks for valid addresses and sufficient balance.
  • The total supply is initialized to a fixed value of 45,467,000 QNT tokens.
• ERC20 Interface:
  • An interface extending ERC20Basic with additional functions: `allowance()`, `transferFrom()`, and `approve()`.
  • It emits an `Approval` event upon successful approval.
• StandardToken:
  • Inherits from ERC20 and BasicToken.
  • Implements additional functionalities such as `approve()`, `allowance()`, `transferFrom()`, `increaseApproval()`, and `decreaseApproval()`.
  • Defines constants for token name, symbol, and decimals.
  • Defines a `crowdsale` address and a modifier `onlyCrowdsale` to restrict certain functions to the crowdsale contract.
  • Implements a `mint()` function that allows the crowdsale contract to mint tokens to specific addresses.
  • Overrides the `transferFrom()` function with additional safety checks for valid addresses, sufficient balance, and allowance.
  • Implements the `approve()` function to allow the spender to spend the specified amount on behalf of the owner.
  • Implements `increaseApproval()` and `decreaseApproval()` functions to atomically increase or decrease the allowance.
• Overall, this contract provides a standard ERC20 token functionality with additional features such as minting and allowance manipulation, along with safety checks to prevent common vulnerabilities like overflow and underflow.

Website: quant.network

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.
• We found 0 critical, 0 high, 0 medium,  0 low and 7 very low-level issues.

Audit Report in PDF

Audit Report Flip book