CRITICAL ISSUES (critical, high severity): 0

Critical and harmful access for owners, user block ability, Bugs and vulnerabilities that enable theft of funds, lock access to funds without possibility to restore it, or lead to any other loss of funds to be transferred to any party.

ERRORS, BUGS AND WARNINGS (medium, low severity): 0

Bugs can negatively affect the usability of a program, errors that can trigger a contract failure, Lack of necessary security precautions, other warnings for owners and users, warning codes that are valid code but the compiler thinks are suspicious.

OPTIMIZATION (low severity): 1

Methods to decrease the cost of transactions in Smart-Contract.

RECOMMENDATIONS (very low severity): 0

Hint and tips to improve contract functionality and trustworthy.

OPTIMIZATION SUGGESTIONS

1- Loop on the dynamic variable (low severity).

If the user gets more parallel deposits his withdraw transaction going to cost more transaction fee, because the loop on the dynamic variable is used in the ‘withdraw’ function.

In case of exceeding TRON limit of the size of transaction withdraw is not possible.

Note:

This comment is relevant only if a user creates an excessive amount of parallel deposits (more than 100).

INDEPENDENT DESCRIPTION OF THE SMART-CONTRACT FUNCTIONALITY

The TronStake smart-contract provides the opportunity to invest any amount in TRX (from 50 TRX) in the contract and get 112% to 292% return on investment in 14 to 28 days if the contract balance has enough funds for payment.

Dividends are paid from deposits of users.
All dividends are calculated at the moment of request and available for withdrawal anytime or after deposit finished time based on plans
Each subsequent Deposit is kept separately in the contract, in order to maintain the payment amount for each Deposit.

Contract Owners Fee

Project Fee: 10%

SIX INVESTMENT PLANS

Plans	Total Return	Daily Profit	Days	Withdraw time
1	112%	8%	14	Any Time
2	136%	6.47%	21	Any Time
3	140%	5%	28	Any Time
4	193%	13.71	14	End of Plan
5	275%	13.1%	21	End of Plan
6	292%	10.42%	28	End of Plan

Minimum deposit amount is 50 TRX

Important: Plans return are float and daily profit for a new deposit will increase by 0.5% daily

function getPercent(uint8 plan) public view returns (uint256) {

if (block.timestamp > startUNIX) {

return plans[plan].percent.add(PERCENT_STEP.mul(block.timestamp.sub(startUNIX)).div(TIME_STEP));

} else {

return plans[plan].percent;

}

}

Example: plan 1 in 4th-day, daily profit is 12% and total return 168%

Referral System (Match Bonus)

This contract paid referrals in three-level totally 8%

Level one: 5%
Level two: 5%
Level three: 5%

Notes:

Referral should be an active user; it means referral address has at least one deposit

TRONSTAKE SMART-CONTRACT FUNCTIONS

Constructor: initial plans, owner address and start date
invest: make a new deposit
withdraw: transfer user profit to his wallet
getPlanInfo: return plan info
getPercent: return calculated percent
getResult: return deposit calculated percent, profit and finish date
getUserDividends: return user dividends
getUserCheckpoint: return user checkpoint
getUserReferrer: return user referrer
getUserDownlineCount: return referral amount in three level
getUserReferralBonus: return referral bonus
getUserReferralTotalBonus: return total referrals
getUserReferralWithdrawn: return total paid referrals
getUserAvailable: return user available
getUserAmountOfDeposits: return deposits amount
getUserTotalDeposits: return total deposit
getUserDepositInfo: return a deposit info
isContract: check the address type