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HPW [HappyLand Reward] Token

About HPW

Listings

Token 8 months
CoinMarketCap 7 months
white paper

Happyland is an online game built in combination with the Blockchain platform, Happyland’s design is inspired by the Texas countryside. USA. In Happyland, players have the opportunity to become a farm owner, as farm owner players are able to participate in soil tillage, raise plants/cattle and decorate their farm. Through that, each player helps build a combined metaverse with many various farms and each with their own style.

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Laser Scorebeta Last Audit: 15 February 2022

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


Not a direct threat, but may indicate unreliable intentions of developer. Widespread names (e.g. Elon, King, Moon, Doge) are common among meme-tokens and scams. The allow to gain free hype and attract unexperienced investors.

ERC1967Upgrade._upgradeToAndCall(address,bytes,bool) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#63-69) ignores return value by Address.functionDelegateCall(newImplementation,data) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#67)
ERC1967Upgrade._upgradeToAndCallSecure(address,bytes,bool) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#76-104) ignores return value by Address.functionDelegateCall(newImplementation,data) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#82)
ERC1967Upgrade._upgradeToAndCallSecure(address,bytes,bool) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#76-104) ignores return value by Address.functionDelegateCall(newImplementation,abi.encodeWithSignature(upgradeTo(address),oldImplementation)) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#90-96)
ERC1967Upgrade._upgradeBeaconToAndCall(address,bytes,bool) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#112-118) ignores return value by Address.functionDelegateCall(IBeacon(newBeacon).implementation(),data) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#116)
Ensure that all the return values of the function calls are used.

Additional information: link

AdminUpgradeabilityProxy.constructor(address,address,bytes).admin (contracts/import.sol#10) shadows:
- TransparentUpgradeableProxy.admin() (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#58-60) (function)
Rename the local variables that shadow another component.

Additional information: link

Modifier TransparentUpgradeableProxy.ifAdmin() (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#41-47) does not always execute _; or revert
All the paths in a modifier must execute _ or revert.

Additional information: link

Reentrancy in ERC1967Upgrade._upgradeToAndCallSecure(address,bytes,bool) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#76-104):
External calls:
- Address.functionDelegateCall(newImplementation,data) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#82)
- Address.functionDelegateCall(newImplementation,abi.encodeWithSignature(upgradeTo(address),oldImplementation)) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#90-96)
Event emitted after the call(s):
- Upgraded(newImplementation) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#102)
Reentrancy in TransparentUpgradeableProxy.constructor(address,address,bytes) (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#33-36):
External calls:
- ERC1967Proxy(_logic,_data) (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#33)
- Address.functionDelegateCall(newImplementation,data) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#67)
- (success,returndata) = target.delegatecall(data) (@openzeppelin/contracts/utils/Address.sol#167)
Event emitted after the call(s):
- AdminChanged(_getAdmin(),newAdmin) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#153)
- _changeAdmin(admin_) (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#35)
Apply the check-effects-interactions pattern.

Additional information: link

Proxy._delegate(address) (@openzeppelin/contracts/proxy/Proxy.sol#21-41) uses assembly
- INLINE ASM (@openzeppelin/contracts/proxy/Proxy.sol#23-40)
Address.isContract(address) (@openzeppelin/contracts/utils/Address.sol#26-35) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#33)
Address._verifyCallResult(bool,bytes,string) (@openzeppelin/contracts/utils/Address.sol#171-188) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/Address.sol#180-183)
StorageSlot.getAddressSlot(bytes32) (@openzeppelin/contracts/utils/StorageSlot.sol#51-55) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/StorageSlot.sol#52-54)
StorageSlot.getBooleanSlot(bytes32) (@openzeppelin/contracts/utils/StorageSlot.sol#60-64) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/StorageSlot.sol#61-63)
StorageSlot.getBytes32Slot(bytes32) (@openzeppelin/contracts/utils/StorageSlot.sol#69-73) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/StorageSlot.sol#70-72)
StorageSlot.getUint256Slot(bytes32) (@openzeppelin/contracts/utils/StorageSlot.sol#78-82) uses assembly
- INLINE ASM (@openzeppelin/contracts/utils/StorageSlot.sol#79-81)
Do not use evm assembly.

Additional information: link

Different versions of Solidity is used:
- Version used: ['^0.8.0', '^0.8.2']
- ^0.8.0 (@openzeppelin/contracts/access/Ownable.sol#3)
- ^0.8.0 (@openzeppelin/contracts/proxy/ERC1967/ERC1967Proxy.sol#3)
- ^0.8.2 (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#3)
- ^0.8.0 (@openzeppelin/contracts/proxy/Proxy.sol#3)
- ^0.8.0 (@openzeppelin/contracts/proxy/beacon/IBeacon.sol#3)
- ^0.8.0 (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#3)
- ^0.8.0 (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#3)
- ^0.8.0 (@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.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/StorageSlot.sol#3)
- ^0.8.0 (contracts/import.sol#2)
- ^0.8.2 (contracts/test/Proxiable.sol#2)
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#89-91) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (@openzeppelin/contracts/utils/Address.sol#104-106) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (@openzeppelin/contracts/utils/Address.sol#114-121) is never used and should be removed
Address.functionStaticCall(address,bytes) (@openzeppelin/contracts/utils/Address.sol#129-131) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#139-145) is never used and should be removed
Address.sendValue(address,uint256) (@openzeppelin/contracts/utils/Address.sol#53-59) is never used and should be removed
Context._msgData() (@openzeppelin/contracts/utils/Context.sol#20-23) is never used and should be removed
ERC1967Upgrade._getBeacon() (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#171-173) is never used and should be removed
ERC1967Upgrade._setBeacon(address) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#178-188) is never used and should be removed
ERC1967Upgrade._upgradeBeaconToAndCall(address,bytes,bool) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#112-118) is never used and should be removed
ERC1967Upgrade._upgradeTo(address) (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#53-56) is never used and should be removed
Proxiable._beforeUpgrade(address) (contracts/test/Proxiable.sol#11) is never used and should be removed
Proxy._implementation() (@openzeppelin/contracts/proxy/Proxy.sol#47) is never used and should be removed
StorageSlot.getBytes32Slot(bytes32) (@openzeppelin/contracts/utils/StorageSlot.sol#69-73) is never used and should be removed
StorageSlot.getUint256Slot(bytes32) (@openzeppelin/contracts/utils/StorageSlot.sol#78-82) is never used and should be removed
TransparentUpgradeableProxy._admin() (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#109-111) is never used and should be removed
UUPSUpgradeable._authorizeUpgrade(address) (@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol#27) 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/proxy/ERC1967/ERC1967Proxy.sol#3) allows old versions
Pragma version^0.8.2 (@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/proxy/Proxy.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/proxy/beacon/IBeacon.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol#3) allows old versions
Pragma version^0.8.0 (@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.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/StorageSlot.sol#3) allows old versions
Pragma version^0.8.0 (contracts/import.sol#2) allows old versions
Pragma version^0.8.2 (contracts/test/Proxiable.sol#2) allows old versions
solc-0.8.2 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

Low level call in ProxyAdmin.getProxyImplementation(TransparentUpgradeableProxy) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#21-27):
- (success,returndata) = address(proxy).staticcall(0x5c60da1b) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#24)
Low level call in ProxyAdmin.getProxyAdmin(TransparentUpgradeableProxy) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#36-42):
- (success,returndata) = address(proxy).staticcall(0xf851a440) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#39)
Low level call in Address.sendValue(address,uint256) (@openzeppelin/contracts/utils/Address.sol#53-59):
- (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#114-121):
- (success,returndata) = target.call{value: value}(data) (@openzeppelin/contracts/utils/Address.sol#119)
Low level call in Address.functionStaticCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#139-145):
- (success,returndata) = target.staticcall(data) (@openzeppelin/contracts/utils/Address.sol#143)
Low level call in Address.functionDelegateCall(address,bytes,string) (@openzeppelin/contracts/utils/Address.sol#163-169):
- (success,returndata) = target.delegatecall(data) (@openzeppelin/contracts/utils/Address.sol#167)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

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

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)
getProxyImplementation(TransparentUpgradeableProxy) should be declared external:
- ProxyAdmin.getProxyImplementation(TransparentUpgradeableProxy) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#21-27)
getProxyAdmin(TransparentUpgradeableProxy) should be declared external:
- ProxyAdmin.getProxyAdmin(TransparentUpgradeableProxy) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#36-42)
changeProxyAdmin(TransparentUpgradeableProxy,address) should be declared external:
- ProxyAdmin.changeProxyAdmin(TransparentUpgradeableProxy,address) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#51-53)
upgrade(TransparentUpgradeableProxy,address) should be declared external:
- ProxyAdmin.upgrade(TransparentUpgradeableProxy,address) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#62-64)
upgradeAndCall(TransparentUpgradeableProxy,address,bytes) should be declared external:
- ProxyAdmin.upgradeAndCall(TransparentUpgradeableProxy,address,bytes) (@openzeppelin/contracts/proxy/transparent/ProxyAdmin.sol#74-76)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Token is deployed only at one blockchain


Token has only one trading pair


Unable to find PancakeSwap trading pair to compute liquidity.


Unable to find PancakeSwap trading pair to compute number of swaps.


Last post in Twitter was more than 30 days ago


Unable to find Youtube account


Unable to find token on CoinHunt

Additional information: link


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


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


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


Token has no active CoinGecko listing / rank


Young tokens have high risks of price dump / death


Young tokens have high risks of price dump / death


Token has relatively low CoinMarketCap rank

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