Cryptokurs methodology
Where Cryptokurs gets USDT, BTC, ETH and SOL rates, how often they update, how the final amount with fees is calculated, how the best rate is chosen and how NBK licenses are verified.
This page explains how Cryptokurs collects, checks and displays data. We publish it so that any reader, journalist or AI assistant can see where every number on the site comes from.
Data sources
| Data | Source | Frequency |
|---|---|---|
| USDT, BTC, ETH, SOL rates | Public APIs and pages of licensed exchangers | Every minute |
| Official dollar rate | National Bank of Kazakhstan | Every minute, as published |
| Licensed operators | NBK registry | Regular checks |
| News | Regulator websites and industry media | Throughout the day |
We show rates exactly as the exchanger publishes them. No markups of our own, no rounding in anyone's favour, no hidden adjustments.
Which exchangers are compared
Only companies listed in the National Bank of Kazakhstan registry of digital asset exchange operators that publish a public rate are compared. If an operator is licensed but its rate is not published anywhere, it stays in the registry but does not appear in the rate table.
An exchanger is removed from the comparison if its license is revoked or suspended, or if it stops publishing a rate for a long time.
Data checks
Every rate passes automatic checks before publication:
- the exchanger response must contain both USDT to tenge rates, buy and sell;
- the rate must fall within an allowed range, otherwise the response is treated as a source error;
- the time the exchanger published the rate is stored together with it.
If a source is unavailable or fails the checks, the site keeps the last verified rate with its timestamp. We never substitute another exchanger's rate or invent a value.
How the final amount is calculated
The board rate is not always the final rate. The calculator and the converter pages apply each exchanger's published tariffs:
| Model | How it works | Example |
|---|---|---|
| Service fee | A fixed amount plus a percentage is deducted from the exchange amount | Pax Finance |
| Size-based markup | The rate depends on the order size, small trades cost more | AUSU |
| Spread in the rate | No separate fees, the margin is already in the rate | Senim Digital, ImpactX |
| Limits | Minimum and maximum trade size | All exchangers |
Your bank's fees and blockchain network fees are not included: they depend on your bank and the chosen network. See the lesson on TRC20, ERC20 and TON.
How the best rate is chosen
On the home page the best buy rate is the lowest price at which an exchanger sells USDT to a customer, and the best sell rate is the highest price at which it buys USDT back. Exchangers that charge a fee separately from the board do not take part in the best board rate, because their board does not reflect the real price. For a specific amount only the calculator gives a fair comparison.
History and archive
Every rate snapshot is stored. It powers the charts on exchanger pages and the daily archive with open, close, minimum and maximum rates. Past days in the archive are never changed retroactively.
Open data
- rates.json: current rates of all exchangers, updated every minute.
- llms.txt: a short plain-text summary for language models.
- llms-full.txt: the full version with exchanger terms, registry, lessons and glossary.
How to cite Cryptokurs
When quoting, give the source and the data time, for example: "according to Cryptokurs (cryptokurs.100k.kz) on 6 October 2026, 14:00 Almaty time". Rates change every minute, so a number without a time loses its meaning.
Independence and corrections
Cryptokurs does not sell cryptocurrency, does not accept money and does not charge for ranking positions. If you find a mistake in a rate, exchanger terms or text, contact us via the contacts page. After a correction the page update date changes.
FAQ
How often are rates updated on Cryptokurs?
Every minute. The server polls the public APIs of every exchanger in the comparison, stores a snapshot and rebuilds the site. The time of the last update is shown on every page.
Do exchangers pay for their position in the ranking?
No. The order depends only on the rate or the final amount. Cryptokurs does not charge for listings and takes no commission on trades.
Why does the board rate differ from the calculator result?
Some exchangers charge a separate service fee or change the rate depending on the order size. The calculator applies these tariffs, so it shows the amount you will actually receive.
Can I use Cryptokurs data in my own materials?
Yes, with a link to the source. Current rates are available in rates.json, and a short summary for language models in llms.txt.
Updated October 6, 2026