The 4 transparency guarantees
Ktkarena commits to 4 concrete transparency points regarding the commission. These aren't marketing promises - each one is verifiable by you.
Guarantee 1 - Displayed BEFORE every challenge
When confirming a challenge, the app systematically displays:
- The identified tier (Discovery, Standard, Premium, Elite, Institutional).
- The applicable commission rate (5%, 4%, 3%, 2%, or 1.5%).
- The exact amount in KTK you'll pay if you win.
- The net winnings (the pot minus the commission) you'll actually receive.
No challenge can be confirmed without you having seen these 4 pieces of information. If you don't see them, report it: it's a critical bug to fix.
Guarantee 2 - Never adjusted after the fact
Once your challenge is confirmed, the commission is frozen at its displayed rate. Even if:
- Ktkarena changes its rates in the meantime → your challenge keeps its old rate.
- You move to a higher or lower tier between staking and resolution → your challenge keeps the tier rate from the moment you staked.
- The challenge is resolved months later → the rate displayed at the start applies.
Once taken, the commission is a line in the transaction ledger: the database refuses to change its amount (see guarantee 4).
Guarantee 3 - Calculated with a public formula
The commission is no algorithmic mystery. Here is the exact formula:
Commission = (Challenge pot: your stake + your opponent's) × (Tier rate)
Example:
- You stake 40,000 KTK against someone who also stakes 40,000 KTK.
- Identified tier: Standard (from 10,000 to less than 50,000 KTK).
- Applicable rate: 4%.
- If you win, commission = 4% of the pot (80,000 KTK) = 3,200 KTK.
- Net winnings = 80,000 (the pot) − 3,200 (commission) = 76,800 KTK.
See the calculation in detail.
Guarantee 4 - Written to the transaction ledger
Every movement (stake debited, winnings paid, commission taken) is a line in the transaction ledger, and on top of that every balance change is written automatically to the audit log.
What this means concretely:
- The database refuses to delete a transaction, or to change its amount, the balance after the operation, its owner or its type.
- A correction doesn't rewrite a line: it adds one, which offsets the first.
- Every line is timestamped.
- You can download your data from the app's settings (see method 3).
These locks are set by the database itself. They can only be lifted by an explicitly authorized operation, such as the procedure for correcting a result, which adds entries without deleting the old ones.
Important. If you find a discrepancy between what was announced before a challenge and what was actually taken afterwards, it's a critical bug. Report it to support@ktkarena.com with the transaction ID (in the app, tap the transaction to see it).
How to verify it yourself
If you want to make sure everything adds up, here are 3 ways to verify:
Method 1 - Before every challenge
Read the confirmation screen carefully. The commission amount is displayed in exact KTK (not an approximate percentage). That amount is what will be taken, not anything else.
Method 2 - After every winning challenge
Compare the amount credited to your KTK balance with what was announced. The difference (if any) must be exactly the commission displayed at the start.
Method 3 - Download your data
In the app, go to Settings → Download my data. You get a JSON file that contains, among other things, all your transactions, including the commissions taken from the pot. Each transaction comes with:
- Its ID.
- Its type.
- Its amount.
- Your balance after the operation.
- Its date and time.