Metagame Arena Studio is a blockchain development company and the creators of the Prometheus NFT game,Prometheus is the first on-chain strategy Role Playing NFT game launched on BSC.
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DelegateERC20._writeCheckpoint(address,uint32,uint256,uint256) (contracts/utils/DelegateERC20.sol#204-222) uses a dangerous strict equality:
- nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber (contracts/utils/DelegateERC20.sol#214)
Don't use strict equality to determine if an account has enough Ether or tokens.
Additional information: link
Metagame.constructor(address)._owner (contracts/Metagame.sol#14) shadows:
- Ownable._owner (@openzeppelin/contracts/access/Ownable.sol#20) (state variable)
Rename the local variables that shadow another component.
Additional information: link
DelegateERC20.delegateBySig(address,uint256,uint256,uint8,bytes32,bytes32) (contracts/utils/DelegateERC20.sol#70-111) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp <= expiry,Token::delegateBySig: signature expired) (contracts/utils/DelegateERC20.sol#109)
Avoid relying on block.timestamp.
Additional information: link
Address.isContract(address) (@openzeppelin/contracts/utils/Address.sol#26-36) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#32-34)
Address.verifyCallResult(bool,bytes,string) (@openzeppelin/contracts/utils/Address.sol#195-215) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#207-210)
Do not use evm assembly.
Additional information: link
Different versions of Solidity is used:
- Version used: ['0.8.4', '^0.8.0', '^0.8.4']
- ^0.8.0 (@openzeppelin/contracts/access/Ownable.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC20/ERC20.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC20/IERC20.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol#3)
- ^0.8.0 (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/Address.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/Context.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/math/SafeMath.sol#3)
- 0.8.4 (contracts/Metagame.sol#2)
- ^0.8.4 (contracts/utils/DelegateERC20.sol#4)
- ABIEncoderV2 (contracts/utils/DelegateERC20.sol#9)
Use one Solidity version.
Additional information: link
Address.functionCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#79-81) is never used and should be removed
Address.functionCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#89-95) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (@openzeppelin/contracts/utils/Address.sol#108-114) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (@openzeppelin/contracts/utils/Address.sol#122-133) is never used and should be removed
Address.functionDelegateCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#168-170) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#178-187) is never used and should be removed
Address.functionStaticCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#141-143) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#151-160) is never used and should be removed
Address.isContract(address) (@openzeppelin/contracts/utils/Address.sol#26-36) is never used and should be removed
Address.sendValue(address,uint256) (@openzeppelin/contracts/utils/Address.sol#54-59) is never used and should be removed
Address.verifyCallResult(bool,bytes,string) (@openzeppelin/contracts/utils/Address.sol#195-215) is never used and should be removed
Context._msgData() (@openzeppelin/contracts/utils/Context.sol#20-22) is never used and should be removed
ERC20._burn(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#274-289) is never used and should be removed
SafeERC20._callOptionalReturn(IERC20,bytes) (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#87-97) is never used and should be removed
SafeERC20.safeApprove(IERC20,address,uint256) (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#44-57) is never used and should be removed
SafeERC20.safeDecreaseAllowance(IERC20,address,uint256) (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#68-79) is never used and should be removed
SafeERC20.safeIncreaseAllowance(IERC20,address,uint256) (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#59-66) is never used and should be removed
SafeERC20.safeTransfer(IERC20,address,uint256) (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#20-26) is never used and should be removed
SafeERC20.safeTransferFrom(IERC20,address,address,uint256) (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#28-35) is never used and should be removed
SafeMath.div(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#134-136) is never used and should be removed
SafeMath.div(uint256,uint256,string) (@openzeppelin/contracts/utils/math/SafeMath.sol#190-199) is never used and should be removed
SafeMath.mod(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#150-152) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (@openzeppelin/contracts/utils/math/SafeMath.sol#216-225) is never used and should be removed
SafeMath.mul(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#120-122) is never used and should be removed
SafeMath.sub(uint256,uint256,string) (@openzeppelin/contracts/utils/math/SafeMath.sol#167-176) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#21-27) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#63-68) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#75-80) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#46-56) is never used and should be removed
SafeMath.trySub(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#34-39) is never used and should be removed
Remove unused functions.
Additional information: link
Pragma version^0.8.0 (@openzeppelin/contracts/access/Ownable.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC20/ERC20.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC20/IERC20.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/Address.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/Context.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/math/SafeMath.sol#3) allows old versions
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.
Additional information: link
Low level call in Address.sendValue(address,uint256) (@openzeppelin/contracts/utils/Address.sol#54-59):
- (success) = recipient.call{value: amount}() (@openzeppelin/contracts/utils/Address.sol#57)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (@openzeppelin/contracts/utils/Address.sol#122-133):
- (success,returndata) = target.call{value: value}(data) (@openzeppelin/contracts/utils/Address.sol#131)
Low level call in Address.functionStaticCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#151-160):
- (success,returndata) = target.staticcall(data) (@openzeppelin/contracts/utils/Address.sol#158)
Low level call in Address.functionDelegateCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#178-187):
- (success,returndata) = target.delegatecall(data) (@openzeppelin/contracts/utils/Address.sol#185)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence
Additional information: link
Constant Metagame.maxSupply (contracts/Metagame.sol#12) is not in UPPER_CASE_WITH_UNDERSCORES
Variable DelegateERC20._delegates (contracts/utils/DelegateERC20.sol#14) is not in mixedCase
Follow the Solidity naming convention.
Additional information: link
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (@openzeppelin/contracts/access/Ownable.sol#53-55)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (@openzeppelin/contracts/access/Ownable.sol#61-64)
symbol() should be declared external:
- ERC20.symbol() (@openzeppelin/contracts/token/ERC20/ERC20.sol#69-71)
decimals() should be declared external:
- ERC20.decimals() (@openzeppelin/contracts/token/ERC20/ERC20.sol#86-88)
totalSupply() should be declared external:
- ERC20.totalSupply() (@openzeppelin/contracts/token/ERC20/ERC20.sol#93-95)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#112-115)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (@openzeppelin/contracts/token/ERC20/ERC20.sol#120-122)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#131-134)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#149-163)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#177-180)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#196-204)
Use the external attribute for functions never called from the contract.
Additional information: link
Unable to find token contract audit
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Additional information: link
Young tokens have high risks of price dump / death
Young tokens have high risks of scam / price dump / death
Young tokens have high risks of price dump / death
Young tokens have high risks of price dump / death
Young tokens have high risks of price dump / death
Token has relatively low CoinGecko rank
Token has relatively low CoinMarketCap rank
Last post in Twitter was more than 30 days ago
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