This guide explains common causes and practical solutions to help you restore access quickly.Why is my OKX app not working? There are several reasons why the app may stop working or crash.

How futures spreads are traded in crypto? Spread trading involves taking two futures positions in opposite directions: one long, one short. The idea is to make money off the price difference between the two futures – which are also called the two legs of the strategy. The profit a trader makes from this trade comes from the price difference, or spread, between those two contracts. That’s why this...

If your mobile phone isn't working properly, or you've lost access to it, or you can't get SMS codes, try the following:My SMS codes aren’t working on OKX Try these fixes first to check if you can get codes working again: Automate your mobile phone time.

If your authenticator app isn't working properly or you've lost access to it, try the following.My authenticator codes aren't working on OKX Try these fixes first to check if you can get your app working again: Sync your authenticator app time. For example, authenticator app has this feature under Settings > Time correction for codes > Sync now. Automate your mobile phone time.

For advanced users, you may refer to the MOOC Course and the academic monograph.How does zk-STARK work? We create a Merkle tree using the hash of each user's account as the leaves. Each account shows balances in USD for various tokens (e.g., BTC, ETH). To handle these balances, we separate its balances into non-negative equities and debts for each token. This way, we only work with positive numbers, making it easier to handle calculations and avoid errors.

In this article, we'll introduce how it works and explain the general mathematical concept, but if you're interested in diving deeper, start here or here.How does it work? *Execution trace table and Merkle tree constructed for zk-STARK PoR* 1.

Compare the proof of reserves published by OKX and the output results, the balance of all addresses and the balance in the proof of reserves are consistent, which can prove the sum of balances that OKX has at the time of the snapshot.AppendixUse third-party node RPC (example: Infura, Alchemy) Configure the RPC parameters of each chain archive node in the rpc.json file, as shown in the following figure: Get the evm archive node Install the archive node manually.

Each blockchain functions as a decentralized system, meaning there's no central support team responsible for individual user requests.How does OKX work with different blockchain networks? We connect to multiple blockchain networks — including Ethereum, Bitcoin, and others — to support deposits, withdrawals, and on-chain transactions.

This means fraudulent messages can appear right alongside your real OKX alerts—such as those for login activity or withdrawals—making it difficult to tell the difference at first glance.This manipulation of SMS sender ID is what makes these phishing attempts particularly dangerous and effective.How does phishing SMS work?

You may reach out to the third-party payment channels via contact details below: Fiat partner How to contact Simplex https://www.simplex.com/support/ Banxa https://support.banxa.com/en/support/tickets/new MoonPay https://www.moonpay.com/contact-us Mercuryo mailto: support@mercuryo.io Coinify https://help.coinify.com/hc/en-us/requests/new UTORG https://utorg.pro/contacts/ Advcash https://support.advcash.com/hc/en-us/requests/new Fiahub https://www.fiahub.com/livechat/ Itez https://itez.com/contacts

How do the rules work?

It's therefore essential to use a secure wallet and keep the details on how to access it to yourself.What's the dusting attack, and how does it work? Dusting itself doesn’t steal coins. Instead, it’s a reconnaissance step: once attackers learn that a certain person controls significant crypto, they may launch phishing, extortion, or targeted scams.How does the dust attack actually work?

Our official website is https://www.okx.com/ (copy the link and open it in your browser). If the issue persists, please contact customer support.Why do I need to re-verify after entering the authentication code when selling on P2P Express? This happens because the system matches you with Merchant ads that meet your trading limits, and the price may fluctuate during this process, requiring a new verification.

Instead, each address now works for all cryptos within the compatible network, so you don’t need to manage multiple formats. Any previously saved addresses have already been automatically upgraded to match these new rules, ensuring smooth and consistent withdrawals across supported cryptos.What happens if I have multiple records of the same address after the address type upgrade?

You can seamlessly switch between light and dark modes, ensuring optimal visibility and comfort regardless of the time of day or your working conditions. This customization enhances your overall trading experience, allowing you to stay focused and productive for longer periods.