O3 Swap Token Logo

O3 [O3 Swap] Token

About O3

Listings

Token 19 months
CoinMarketCap 19 months

Website

white paper

O3 Swap, a proprietary cross-chain aggregation protocol, was designed to achieve more efficient trading pathways using 2 solutions. The first solution is Liquidity Aggregation - aggregating the liquidity source across leading Decentralized Exchanges(DEXs) from mainstream blockchains. Another part is Cross-Chain Exchange - implementing cross-chain protocols that allow DeFi users to freely exchange cross-chain assets with one click within their own wallet.

There are plenty of sources available in the cryptocurrency market, especially with the emerging burst of Layer 2 projects on Ethereum as well as decentralized environments such as chainBinance Smart Chain and Huobi Eco Chain. These chains are independent from each other, the assets of which are not interconvertible. O3 Swap is changing the game in an effort to realize the interconversion of assets from separate chains. At the same time, O3 aggregator provides the best price quote from more than 10 DEXs for users who are seeking for the best price.

Laser Scorebeta Last Audit: 30 November 2021

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

Anti-Scam

Links


Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

O3.transferFrom(address,address,uint256).allowance (#1025) shadows:
- ERC20.allowance(address,address) (#514-516) (function)
- IERC20.allowance(address,address) (#380) (function)
Rename the local variables that shadow another component.

Additional information: link

Reentrancy in O3.stake(address,uint256) (#1040-1050):
External calls:
- _pullToken(token,_msgSender(),amount) (#1043)
- IERC20(token).safeTransferFrom(from,address(this),amount) (#1133)
- returndata = address(token).functionCall(data,SafeERC20: low-level call failed) (#293)
- (success,returndata) = target.call{value: value}(data) (#170)
External calls sending eth:
- _pullToken(token,_msgSender(),amount) (#1043)
- (success,returndata) = target.call{value: value}(data) (#170)
State variables written after the call(s):
- _updateStakeRecord(_msgSender(),token,info.amountStaked.add(amount)) (#1046)
- _stakingRecords[staker][token].amountStaked = _amountStaked (#1074)
- _stakingRecords[staker][token].blockNumber = block.number (#1075)
- _mintUnlocked(_msgSender(),unlockedAmount) (#1047)
- _totalUnlocked = _totalUnlocked.add(amount) (#1110)
- _mintUnlocked(_msgSender(),unlockedAmount) (#1047)
- _unlocks[recipient] = _unlocks[recipient].add(amount) (#1109)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in O3.unstake(address,uint256) (#1052-1062):
External calls:
- _pushToken(token,_msgSender(),amount) (#1059)
- IERC20(token).safeTransfer(to,amount) (#1137)
- returndata = address(token).functionCall(data,SafeERC20: low-level call failed) (#293)
- (success,returndata) = target.call{value: value}(data) (#170)
External calls sending eth:
- _pushToken(token,_msgSender(),amount) (#1059)
- (success,returndata) = target.call{value: value}(data) (#170)
Event emitted after the call(s):
- LOG_UNSTAKE(_msgSender(),token,amount) (#1060)
Apply the check-effects-interactions pattern.

Additional information: link

Address._verifyCallResult(bool,bytes,string) (#222-239) uses assembly
- INLINE ASM (#231-234)
Do not use evm assembly.

Additional information: link

SafeMath.trySub(uint256,uint256) (#716-719) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.6.0 (#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.functionDelegateCall(address,bytes,string) (#214-220):
- (success,returndata) = target.delegatecall(data) (#218)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Parameter O3.setUnlockBlockGap(address,uint256)._blockGap (#1035) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#11)" inContext (#5-14)
Remove redundant statements if they congest code but offer no value.

Additional information: link

decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#580-583)
Use the external attribute for functions never called from the contract.

Additional information: link

Holders:


Unable to find PancakeSwap trading pair to compute liquidity.


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


Twitter account link seems to be invalid


Unable to find Youtube account


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

Additional information: link


Unable to find token contract audit


Unable to verify token contract address on the website


Unable to find audit link on the website


Unable to find whitepaper link on the website


Unable to find Telegram link on the website


Unable to find Twitter link on the website


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 price dump / death

Price for O3