BITBLOCKS is a business-oriented cryptocurrency directed towards entertainment, especially in video games and other areas that revolve around this current industry, such as championships, events, fairs, conferences, and game development among others. We know that this business is in rapid expansion worldwide and that video games have not ceased to be something exclusively marketed to target age groups. The climbing value of the gamer world has reached such a point of professionalism that there arecurrently athletes and video game teams, tournament achievements that are transmitted in real time on the internet and even on television.
Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)
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.
IERC1820Registry.setInterfaceImplementer(address,bytes32,address).interfaceHash (#668) shadows:
- IERC1820Registry.interfaceHash(string) (#686) (function)
IERC1820Registry.getInterfaceImplementer(address,bytes32).interfaceHash (#679) shadows:
- IERC1820Registry.interfaceHash(string) (#686) (function)
ERC777.constructor(string,string,address[]).name (#787) shadows:
- ERC777.name() (#807-809) (function)
- IERC777.name() (#54) (function)
ERC777.constructor(string,string,address[]).symbol (#788) shadows:
- ERC777.symbol() (#814-816) (function)
- IERC777.symbol() (#60) (function)
ERC777.constructor(string,string,address[]).defaultOperators (#789) shadows:
- ERC777.defaultOperators() (#936-938) (function)
- IERC777.defaultOperators() (#157) (function)
ZCORE.constructor(string,string,address[]).defaultOperators (#1214) shadows:
- ERC777.defaultOperators() (#936-938) (function)
- IERC777.defaultOperators() (#157) (function)
Rename the local variables that shadow another component.
Additional information: link
ZCORE.changeOwner(address).newOwner (#1223) lacks a zero-check on :
- owner = newOwner (#1235)
Check that the address is not zero.
Additional information: link
Reentrancy in ERC777._burn(address,address,uint256,bytes,bytes) (#1092-1111):
External calls:
- _callTokensToSend(operator,from,address(0),amount,data,operatorData) (#1103)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
State variables written after the call(s):
- _balances[from] = _balances[from].sub(amount,ERC777: burn amount exceeds balance) (#1106)
- _totalSupply = _totalSupply.sub(amount) (#1107)
Reentrancy in ERC777._send(address,address,address,uint256,bytes,bytes,bool) (#1063-1082):
External calls:
- _callTokensToSend(operator,from,to,amount,userData,operatorData) (#1077)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
State variables written after the call(s):
- _move(operator,from,to,amount,userData,operatorData) (#1079)
- _balances[from] = _balances[from].sub(amount,ERC777: transfer amount exceeds balance) (#1123)
- _balances[to] = _balances[to].add(amount) (#1124)
Reentrancy in ZCORE.constructor(string,string,address[]) (#1211-1220):
External calls:
- ERC777(tokenName,tokenSymbol,defaultOperators) (#1216)
- ERC1820_REGISTRY.setInterfaceImplementer(address(this),keccak256(bytes)(ERC777Token),address(this)) (#800)
- ERC1820_REGISTRY.setInterfaceImplementer(address(this),keccak256(bytes)(ERC20Token),address(this)) (#801)
State variables written after the call(s):
- owner = _msgSender() (#1219)
Reentrancy in ERC777.transfer(address,uint256) (#868-880):
External calls:
- _callTokensToSend(from,from,recipient,amount,,) (#873)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
State variables written after the call(s):
- _move(from,from,recipient,amount,,) (#875)
- _balances[from] = _balances[from].sub(amount,ERC777: transfer amount exceeds balance) (#1123)
- _balances[to] = _balances[to].add(amount) (#1124)
Reentrancy in ERC777.transferFrom(address,address,uint256) (#999-1013):
External calls:
- _callTokensToSend(spender,holder,recipient,amount,,) (#1005)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
State variables written after the call(s):
- _approve(holder,spender,_allowances[holder][spender].sub(amount,ERC777: transfer amount exceeds allowance)) (#1008)
- _allowances[holder][spender] = value (#1136)
- _move(spender,holder,recipient,amount,,) (#1007)
- _balances[from] = _balances[from].sub(amount,ERC777: transfer amount exceeds balance) (#1123)
- _balances[to] = _balances[to].add(amount) (#1124)
Apply the check-effects-interactions pattern.
Additional information: link
Reentrancy in ERC777._burn(address,address,uint256,bytes,bytes) (#1092-1111):
External calls:
- _callTokensToSend(operator,from,address(0),amount,data,operatorData) (#1103)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
Event emitted after the call(s):
- Burned(operator,from,amount,data,operatorData) (#1109)
- Transfer(from,address(0),amount) (#1110)
Reentrancy in ERC777._mint(address,address,uint256,bytes,bytes) (#1032-1051):
External calls:
- _callTokensReceived(operator,address(0),account,amount,userData,operatorData,true) (#1047)
- IERC777Recipient(implementer).tokensReceived(operator,from,to,amount,userData,operatorData) (#1189)
Event emitted after the call(s):
- Minted(operator,account,amount,userData,operatorData) (#1049)
- Transfer(address(0),account,amount) (#1050)
Reentrancy in ERC777._send(address,address,address,uint256,bytes,bytes,bool) (#1063-1082):
External calls:
- _callTokensToSend(operator,from,to,amount,userData,operatorData) (#1077)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
Event emitted after the call(s):
- Sent(operator,from,to,amount,userData,operatorData) (#1126)
- _move(operator,from,to,amount,userData,operatorData) (#1079)
- Transfer(from,to,amount) (#1127)
- _move(operator,from,to,amount,userData,operatorData) (#1079)
Reentrancy in ZCORE.operatorRedeem(address,uint256,bytes,bytes,string) (#1292-1307):
External calls:
- _burn(_msgSender(),account,amount,data,operatorData) (#1305)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
Event emitted after the call(s):
- Redeem(account,amount,underlyingAssetRecipient) (#1306)
Reentrancy in ZCORE.redeem(uint256,bytes,string) (#1281-1290):
External calls:
- _burn(_msgSender(),_msgSender(),amount,data,) (#1288)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
Event emitted after the call(s):
- Redeem(msg.sender,amount,underlyingAssetRecipient) (#1289)
Reentrancy in ERC777.transfer(address,uint256) (#868-880):
External calls:
- _callTokensToSend(from,from,recipient,amount,,) (#873)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
Event emitted after the call(s):
- Sent(operator,from,to,amount,userData,operatorData) (#1126)
- _move(from,from,recipient,amount,,) (#875)
- Transfer(from,to,amount) (#1127)
- _move(from,from,recipient,amount,,) (#875)
Reentrancy in ERC777.transferFrom(address,address,uint256) (#999-1013):
External calls:
- _callTokensToSend(spender,holder,recipient,amount,,) (#1005)
- IERC777Sender(implementer).tokensToSend(operator,from,to,amount,userData,operatorData) (#1161)
Event emitted after the call(s):
- Approval(holder,spender,value) (#1137)
- _approve(holder,spender,_allowances[holder][spender].sub(amount,ERC777: transfer amount exceeds allowance)) (#1008)
- Sent(operator,from,to,amount,userData,operatorData) (#1126)
- _move(spender,holder,recipient,amount,,) (#1007)
- Transfer(from,to,amount) (#1127)
- _move(spender,holder,recipient,amount,,) (#1007)
Apply the check-effects-interactions pattern.
Additional information: link
Address.isContract(address) (#559-568) uses assembly
- INLINE ASM (#566)
Do not use evm assembly.
Additional information: link
Different versions of Solidity is used:
- Version used: ['^0.5.0', '^0.5.5']
- ^0.5.0 (#9)
- ^0.5.0 (#39)
- ^0.5.0 (#228)
- ^0.5.0 (#263)
- ^0.5.0 (#298)
- ^0.5.0 (#377)
- ^0.5.5 (#536)
- ^0.5.0 (#609)
- ^0.5.0 (#721)
- ^0.5.0 (#1198)
Use one Solidity version.
Additional information: link
Address.sendValue(address,uint256) (#598-604) is never used and should be removed
Address.toPayable(address) (#576-578) is never used and should be removed
Context._msgData() (#31-34) is never used and should be removed
SafeMath.div(uint256,uint256) (#474-476) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#491-498) is never used and should be removed
SafeMath.mod(uint256,uint256) (#511-513) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#528-531) is never used and should be removed
SafeMath.mul(uint256,uint256) (#449-461) is never used and should be removed
Remove unused functions.
Additional information: link
Pragma version^0.5.0 (#9) allows old versions
Pragma version^0.5.0 (#39) allows old versions
Pragma version^0.5.0 (#228) allows old versions
Pragma version^0.5.0 (#263) allows old versions
Pragma version^0.5.0 (#298) allows old versions
Pragma version^0.5.0 (#377) allows old versions
Pragma version^0.5.5 (#536) is known to contain severe issues (https://solidity.readthedocs.io/en/latest/bugs.html)
Pragma version^0.5.0 (#609) allows old versions
Pragma version^0.5.0 (#721) allows old versions
Pragma version^0.5.0 (#1198) allows old versions
solc-0.5.12 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 Address.sendValue(address,uint256) (#598-604):
- (success) = recipient.call.value(amount)() (#602)
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 (#32)" inContext (#21-35)
Remove redundant statements if they congest code but offer no value.
Additional information: link
name() should be declared external:
- ERC777.name() (#807-809)
symbol() should be declared external:
- ERC777.symbol() (#814-816)
decimals() should be declared external:
- ERC777.decimals() (#824-826)
granularity() should be declared external:
- ERC777.granularity() (#833-835)
totalSupply() should be declared external:
- ERC777.totalSupply() (#840-842)
balanceOf(address) should be declared external:
- ERC777.balanceOf(address) (#847-849)
send(address,uint256,bytes) should be declared external:
- ERC777.send(address,uint256,bytes) (#856-858)
transfer(address,uint256) should be declared external:
- ERC777.transfer(address,uint256) (#868-880)
burn(uint256,bytes) should be declared external:
- ERC777.burn(uint256,bytes) (#887-889)
authorizeOperator(address) should be declared external:
- ERC777.authorizeOperator(address) (#906-916)
revokeOperator(address) should be declared external:
- ERC777.revokeOperator(address) (#921-931)
defaultOperators() should be declared external:
- ERC777.defaultOperators() (#936-938)
operatorSend(address,address,uint256,bytes,bytes) should be declared external:
- ERC777.operatorSend(address,address,uint256,bytes,bytes) (#945-956)
operatorBurn(address,uint256,bytes,bytes) should be declared external:
- ERC777.operatorBurn(address,uint256,bytes,bytes) (#963-966)
allowance(address,address) should be declared external:
- ERC777.allowance(address,address) (#975-977)
approve(address,uint256) should be declared external:
- ERC777.approve(address,uint256) (#984-988)
transferFrom(address,address,uint256) should be declared external:
- ERC777.transferFrom(address,address,uint256) (#999-1013)
Use the external attribute for functions never called from the contract.
Additional information: link
Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.
Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.
Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.
Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.
Number of Binance Smart Chain (BSC) token holders is low.
Token is deployed only at one blockchain
Unable to find token contract audit
Unable to find audit link on the website
Unable to find token on CoinHunt
Additional information: link
Young tokens have high risks of scam / price dump / death
Token has a considerable age, but social accounts / website are missing or have few users
Token has a considerable age, but average PancakeSwap 30d trading volume is low
Token has relatively low CoinGecko rank
Telegram account has relatively few subscribers
Last post in Twitter was more than 30 days ago
Unable to find Youtube account