OpenBiSea NFT marketplace is a smart contract, and iOS, Android and web UI app. It's a simple, step-by-step guided solution to buy, sell and make auctions (smart contract based) for NFT. The main core smart contracts are built on the Binance Smart Chain (BSC), polygon(exMATIC) and have an Ethereum bridge for NFT assets.
Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains
Different versions of Solidity is used:
- Version used: ['>=0.6.0<0.8.0', '^0.6.0', '^0.6.8']
- >=0.6.0<0.8.0 (@openzeppelin/contracts/math/SafeMath.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/token/ERC20/ERC20.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/token/ERC20/IERC20.sol#3)
- >=0.6.0<0.8.0 (@openzeppelin/contracts/utils/Context.sol#3)
- ^0.6.0 (contracts/OBS.sol#3)
- ^0.6.8 (contracts/access/TeamRole.sol#3)
- ^0.6.8 (contracts/access/lib/Roles.sol#3)
Use one Solidity version.
Additional information: link
Context._msgData() (@openzeppelin/contracts/utils/Context.sol#20-23) is never used and should be removed
ERC20._setupDecimals(uint8) (@openzeppelin/contracts/token/ERC20/ERC20.sol#287-289) is never used and should be removed
SafeMath.div(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#135-138) is never used and should be removed
SafeMath.div(uint256,uint256,string) (@openzeppelin/contracts/math/SafeMath.sol#190-193) is never used and should be removed
SafeMath.mod(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#152-155) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (@openzeppelin/contracts/math/SafeMath.sol#210-213) is never used and should be removed
SafeMath.mul(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#116-121) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#24-28) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#60-63) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#70-73) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#45-53) is never used and should be removed
SafeMath.trySub(uint256,uint256) (@openzeppelin/contracts/math/SafeMath.sol#35-38) is never used and should be removed
Remove unused functions.
Additional information: link
Pragma version>=0.6.0<0.8.0 (@openzeppelin/contracts/math/SafeMath.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (@openzeppelin/contracts/token/ERC20/ERC20.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (@openzeppelin/contracts/token/ERC20/IERC20.sol#3) is too complex
Pragma version>=0.6.0<0.8.0 (@openzeppelin/contracts/utils/Context.sol#3) is too complex
Pragma version^0.6.0 (contracts/OBS.sol#3) allows old versions
Pragma version^0.6.8 (contracts/access/TeamRole.sol#3) allows old versions
Pragma version^0.6.8 (contracts/access/lib/Roles.sol#3) allows old versions
solc-0.6.8 is not recommended for deployment
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
Redundant expression "this (@openzeppelin/contracts/utils/Context.sol#21)" inContext (@openzeppelin/contracts/utils/Context.sol#15-24)
Remove redundant statements if they congest code but offer no value.
Additional information: link
OBS.constructor() (contracts/OBS.sol#6-8) uses literals with too many digits:
- _mint(msg.sender,88888 * 1000000000000000000) (contracts/OBS.sol#7)
Use: Ether suffix, Time suffix, or The scientific notation
Additional information: link
name() should be declared external:
- ERC20.name() (@openzeppelin/contracts/token/ERC20/ERC20.sol#64-66)
symbol() should be declared external:
- ERC20.symbol() (@openzeppelin/contracts/token/ERC20/ERC20.sol#72-74)
decimals() should be declared external:
- ERC20.decimals() (@openzeppelin/contracts/token/ERC20/ERC20.sol#89-91)
totalSupply() should be declared external:
- ERC20.totalSupply() (@openzeppelin/contracts/token/ERC20/ERC20.sol#96-98)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (@openzeppelin/contracts/token/ERC20/ERC20.sol#103-105)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#115-118)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (@openzeppelin/contracts/token/ERC20/ERC20.sol#123-125)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#134-137)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#152-156)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#170-173)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#189-192)
mint(address,uint256) should be declared external:
- OBS.mint(address,uint256) (contracts/OBS.sol#9-11)
burn(address,uint256) should be declared external:
- OBS.burn(address,uint256) (contracts/OBS.sol#12-14)
getOracleAddresses() should be declared external:
- TeamRole.getOracleAddresses() (contracts/access/TeamRole.sol#28-30)
addOracle(address) should be declared external:
- TeamRole.addOracle(address) (contracts/access/TeamRole.sol#32-34)
renounceOracle() should be declared external:
- TeamRole.renounceOracle() (contracts/access/TeamRole.sol#39-41)
getTeamAddresses() should be declared external:
- TeamRole.getTeamAddresses() (contracts/access/TeamRole.sol#50-52)
addTeam(address) should be declared external:
- TeamRole.addTeam(address) (contracts/access/TeamRole.sol#53-55)
renounceTeam() should be declared external:
- TeamRole.renounceTeam() (contracts/access/TeamRole.sol#56-58)
Use the external attribute for functions never called from the contract.
Additional information: link
Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.
Token has only one trading pair
Unable to find PancakeSwap trading pair to compute liquidity.
Unable to find PancakeSwap trading pair to compute volume.
Unable to find PancakeSwap trading pair to compute number of swaps.
Token has no active CoinGecko listing / rank
Token has no active CoinMarketCap listing / rank
Token has a considerable age, but average PancakeSwap 30d trading volume is low
Young tokens have high risks of price dump / death
Young tokens have high risks of price dump / death
Last post in Twitter was more than 30 days ago
Unable to find Blog account (Reddit or Medium)
Unable to find Youtube account