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ARCONA Token

About ARCONA

Listings

Token 17 months
CoinMarketCap 2 years
white paper

The Arcona Ecosystem creates a Digital Land - a layer of Augmented Reality uniting the physical and virtual worlds into a single information environment perfectly linked to our real world. It is designed for everyday user interactive experience with augmented, virtual and mixed reality multimedia content in real world locations.

Laser Scorebeta Last Audit: 22 December 2021

report
Token seems to be (relatively) fine. It still become a scam, but probability is moderate.


Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

Reentrancy in ARCONA.exchange(uint256) (contracts/ARCONA.sol#33-41):
External calls:
- require(bool,string)(exchangeToken.transferFrom(msg.sender,address(this),_exchangeTokensAmount),[E-87] - Failed to transfer token.) (contracts/ARCONA.sol#39)
State variables written after the call(s):
- _mint(msg.sender,_tokensToMint) (contracts/ARCONA.sol#40)
- _totalSupply += amount (@openzeppelin/contracts/token/ERC20/ERC20.sol#238)
Apply the check-effects-interactions pattern.

Additional information: link

ARCONA.setTokenPrice(uint256) (contracts/ARCONA.sol#27-29) should emit an event for:
- tokenPrice = _newPrice (contracts/ARCONA.sol#28)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in ARCONA.exchange(uint256) (contracts/ARCONA.sol#33-41):
External calls:
- require(bool,string)(exchangeToken.transferFrom(msg.sender,address(this),_exchangeTokensAmount),[E-87] - Failed to transfer token.) (contracts/ARCONA.sol#39)
State variables written after the call(s):
- _mint(msg.sender,_tokensToMint) (contracts/ARCONA.sol#40)
- _balances[account] += amount (@openzeppelin/contracts/token/ERC20/ERC20.sol#239)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in ARCONA.exchange(uint256) (contracts/ARCONA.sol#33-41):
External calls:
- require(bool,string)(exchangeToken.transferFrom(msg.sender,address(this),_exchangeTokensAmount),[E-87] - Failed to transfer token.) (contracts/ARCONA.sol#39)
Event emitted after the call(s):
- Transfer(address(0),account,amount) (@openzeppelin/contracts/token/ERC20/ERC20.sol#240)
- _mint(msg.sender,_tokensToMint) (contracts/ARCONA.sol#40)
Apply the check-effects-interactions pattern.

Additional information: link

Different versions of Solidity is used:
- Version used: ['0.8.0', '^0.8.0']
- ^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/utils/Context.sol#3)
- ^0.8.0 (@openzeppelin/contracts/utils/math/SafeMath.sol#3)
- 0.8.0 (contracts/ARCONA.sol#2)
Use one Solidity version.

Additional information: link

Context._msgData() (@openzeppelin/contracts/utils/Context.sol#20-23) is never used and should be removed
ERC20._burn(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#254-265) is never used and should be removed
SafeMath.div(uint256,uint256,string) (@openzeppelin/contracts/utils/math/SafeMath.sol#190-195) 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#212-217) is never used and should be removed
SafeMath.sub(uint256,uint256) (@openzeppelin/contracts/utils/math/SafeMath.sol#106-108) is never used and should be removed
SafeMath.sub(uint256,uint256,string) (@openzeppelin/contracts/utils/math/SafeMath.sol#167-172) 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/utils/Context.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/utils/math/SafeMath.sol#3) allows old versions
Pragma version0.8.0 (contracts/ARCONA.sol#2) allows old versions
solc-0.8.0 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

Parameter ARCONA.setTokenPrice(uint256)._newPrice (contracts/ARCONA.sol#27) is not in mixedCase
Parameter ARCONA.exchange(uint256)._exchangeTokensAmount (contracts/ARCONA.sol#33) is not in mixedCase
Parameter ARCONA.calculateTokensAmountAfterExchange(uint256)._exchangeTokensAmount (contracts/ARCONA.sol#45) is not in mixedCase
Parameter ARCONA.mint(address,uint256)._account (contracts/ARCONA.sol#52) is not in mixedCase
Parameter ARCONA.mint(address,uint256)._amount (contracts/ARCONA.sol#52) is not in mixedCase
Follow the Solidity naming convention.

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

ARCONA.calculateTokensAmountAfterExchange(uint256) (contracts/ARCONA.sol#45-47) uses literals with too many digits:
- _exchangeTokensAmount.mul(1000000000000000000).div(tokenPrice) (contracts/ARCONA.sol#46)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

ARCONA.maxSupply (contracts/ARCONA.sol#18) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (@openzeppelin/contracts/access/Ownable.sol#54-57)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (@openzeppelin/contracts/access/Ownable.sol#63-67)
name() should be declared external:
- ERC20.name() (@openzeppelin/contracts/token/ERC20/ERC20.sol#59-61)
symbol() should be declared external:
- ERC20.symbol() (@openzeppelin/contracts/token/ERC20/ERC20.sol#67-69)
decimals() should be declared external:
- ERC20.decimals() (@openzeppelin/contracts/token/ERC20/ERC20.sol#84-86)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (@openzeppelin/contracts/token/ERC20/ERC20.sol#98-100)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#110-113)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (@openzeppelin/contracts/token/ERC20/ERC20.sol#118-120)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#129-132)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#147-155)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#169-172)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (@openzeppelin/contracts/token/ERC20/ERC20.sol#188-194)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Unable to find PancakeSwap trading pair to compute liquidity.


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Last post in Twitter was more than 30 days ago


BscScan page for the token does not contain additional info: website, socials, description, etc.

Additional information: link


Unable to verify token contract address on the website


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Young tokens have high risks of scam / price dump / death


Young tokens have high risks of price dump / death

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