Shar Pei - Smart Contract Audit Report

Summary

Shar Pei ($SHARPEI) is a new community-driven DeFi token on the Binance Smart Chain.

We reviewed the Shar Pei Token contract at 0xfE3AF7376e412a377358d5894C790bB3e00D0dc1 on the Binance Smart Chain mainnet.

Notes on the Contract:
The total supply of the token is initially set to 100 billion [100,000,000,000].
Any user can burn their own tokens to reduce the total supply.
At the time of writing this report, 49.5% of the total supply is stored in a token locking contract and will vest to the team on October 30th, 2026.
The top five holders own a cumulative 14.96% of the total supply.
1.58% of the total supply is in Pancakeswap liquidity.
Of that liquidity, 97.2% of the LP tokens are stored in a token locking contract and will vest to the team on November 30th, 2022.

The token implements the ERC-1363 standard in order to support transfer-and-call and approve-and-call functionality.
The recipient of the token must be a contract with proper implementations of the onTransferReceived and onApprovalReceived functions.
The contract complies with the ERC20 token standard.
Some gas optimizations can be achieved through declaring functions external instead of public. As this contract is already deployed, this is merely informational.
As the contract is deployed with Solidity v0.8.x, it is protected from overflows.
Ownership has been renounced.

Audit Findings Summary
No external threats were identified.
Please be aware of the amount of liquidity available in proportion to the largest wallets.
Date: November 10th, 2021

Audit Results

Vulnerability Category	Notes	Result
Arbitrary Storage Write	N/A	PASS
Arbitrary Jump	N/A	PASS
Delegate Call to Untrusted Contract	N/A	PASS
Dependence on Predictable Variables	N/A	PASS
Deprecated Opcodes	N/A	PASS
Ether Thief	N/A	PASS
Exceptions	N/A	PASS
External Calls	N/A	PASS
Flash Loans	N/A	PASS
Integer Over/Underflow	N/A	PASS
Multiple Sends	N/A	PASS
Oracles	N/A	PASS
Suicide	N/A	PASS
State Change External Calls	N/A	PASS
Unchecked Retval	N/A	PASS
User Supplied Assertion	N/A	PASS
Critical Solidity Compiler	N/A	PASS
Overall Contract Safety		PASS

Function Graph

ERC20 Token Graph

Inheritence Chart

Multi-file Token

Functions Overview


 ($) = payable function
 # = non-constant function
 
 + [Int] IERC20 
    - [Ext] totalSupply
    - [Ext] balanceOf
    - [Ext] transfer #
    - [Ext] allowance
    - [Ext] approve #
    - [Ext] transferFrom #

 + [Int] IERC20Metadata (IERC20)
    - [Ext] name
    - [Ext] symbol
    - [Ext] decimals

 +  Context 
    - [Int] _msgSender
    - [Int] _msgData

 +  ERC20 (Context, IERC20, IERC20Metadata)
    - [Pub]  #
    - [Pub] name
    - [Pub] symbol
    - [Pub] decimals
    - [Pub] totalSupply
    - [Pub] balanceOf
    - [Pub] transfer #
    - [Pub] allowance
    - [Pub] approve #
    - [Pub] transferFrom #
    - [Pub] increaseAllowance #
    - [Pub] decreaseAllowance #
    - [Int] _transfer #
    - [Int] _mint #
    - [Int] _burn #
    - [Int] _approve #
    - [Int] _beforeTokenTransfer #

 +  ERC20Burnable (Context, ERC20)
    - [Pub] burn #
    - [Pub] burnFrom #

 + [Lib] Address 
    - [Int] isContract
    - [Int] sendValue #
    - [Int] functionCall #
    - [Int] functionCall #
    - [Int] functionCallWithValue #
    - [Int] functionCallWithValue #
    - [Int] functionStaticCall
    - [Int] functionStaticCall
    - [Int] functionDelegateCall #
    - [Int] functionDelegateCall #
    - [Prv] _verifyCallResult

 + [Int] IERC165 
    - [Ext] supportsInterface

 +  ERC165 (IERC165)
    - [Pub] supportsInterface

 + [Int] IERC1363 (IERC20, IERC165)
    - [Ext] transferAndCall #
    - [Ext] transferAndCall #
    - [Ext] transferFromAndCall #
    - [Ext] transferFromAndCall #
    - [Ext] approveAndCall #
    - [Ext] approveAndCall #

 + [Int] IERC1363Receiver 
    - [Ext] onTransferReceived #

 + [Int] IERC1363Spender 
    - [Ext] onApprovalReceived #

 +  ERC1363 (ERC20, IERC1363, ERC165)
    - [Pub] supportsInterface
    - [Pub] transferAndCall #
    - [Pub] transferAndCall #
    - [Pub] transferFromAndCall #
    - [Pub] transferFromAndCall #
    - [Pub] approveAndCall #
    - [Pub] approveAndCall #
    - [Int] _checkAndCallTransfer #
    - [Int] _checkAndCallApprove #

 +  Ownable (Context)
    - [Pub] owner
    - [Pub] renounceOwnership #
       - modifiers: onlyOwner
    - [Pub] transferOwnership #
       - modifiers: onlyOwner

 +  TokenRecover (Ownable)
    - [Pub] recoverERC20 #
       - modifiers: onlyOwner

 +  ERC20Decimals (ERC20)
    - [Pub]  #
    - [Pub] decimals

 +  ERC20Mintable (ERC20)
    - [Ext] mintingFinished
    - [Ext] mint #
       - modifiers: canMint
    - [Ext] finishMinting #
       - modifiers: canMint
    - [Int] _finishMinting #

 +  CoinToken (ERC20Decimals, ERC20Mintable, ERC20Burnable, ERC1363, TokenRecover)
    - [Pub]  ($)
       - modifiers: ERC20,ERC20Decimals
    - [Pub] decimals
    - [Int] _mint #
       - modifiers: onlyOwner
    - [Int] _finishMinting #
       - modifiers: onlyOwner

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