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Zero-Knowledge Proofs: what are zk-STARKs and how do they work? (zk-STARK V1)
Generate user inclusion proof: to prove that a specific user is included in the total amount claimed by the exchange, we provide the user's computed trace, user balance, user ID, and a random number corresponding to the user index. We also provide the Merkle path corresponding to this data.Published on May 10, 2023Updated on Sep 8, 2025FAQ179How can you protect yourself from a phishing attack?
Pharming: the attacker spots the vulnerability of the user's computer system and modify the file about DNS information stored in the user's computer with malicious code, and replaces the website address that the user would visit with the phishing website address. After entering the legitimate website address in the browser, the user will be auto-redirected to the phishing website address. If the user isn't aware of this, the attack is successful.Published on Aug 17, 2023Updated on Mar 3, 2026FAQ3,692What can I do if my device is running in an unsafe environment?
A virtual machine (VM) is software that simulates a complete hardware system, allowing a single physical computer to run multiple operating systems independently and in isolation. Your account may be automatically logged out because the browser environment has changed. We recommend switching to a different browser and trying to log in again.Published on Jan 19, 2023Updated on Feb 12, 2026FAQ298How do I protect my account from Trojan horse takeovers?
Trojan horse viruses are a type of malicious software designed to infect your phone or computer. Once installed, they can silently grant remote access and expose sensitive information, including login credentials, to unauthorized parties. Account takeovers caused by trojans can be stealthy and difficult to detect — but with the right precautions, they’re also preventable.Published on May 30, 2025Updated on Feb 5, 2026FAQ11Do I need to pay fees for deposit and withdrawal?
The fee amount is based on the transaction (a more complex transaction means that more computational resources will be consumed), hence a higher fee will be charged. The withdrawal fee deduction logic may vary slightly depending on your app version:3.1 Latest App version (e.g., Android 6.151 / iOS equivalent and above) If your account balance is sufficient, the fee will be deducted from your balance.Published on Jun 1, 2023Updated on Mar 16, 2026FAQ5,569OKX to list BREV (Brevis) for spot trading and convert pre-market futures to standard perpetual futures
BREV withdrawals will open at 16:00 UTC on Jan 6, 2026.Project introduction Brevis is the infinite compute layer for Web3 and everything, powered by zero-knowledge proofs to enable trustless access and processing of omnichain data in smart contracts.Published on Jan 5, 2026Updated on Jan 7, 2026AnnouncementsOKX to list PROVE (Succinct), DOOD (Doodles) for spot trading
Project introduction Succinct is a protocol focused on verifiable computation, enabling developers to easily generate and verify zero-knowledge (ZK) proofs in a variety of settings using its general-purpose zkVM (zero-knowledge virtual machine).Published on Oct 17, 2025Updated on Nov 17, 2025AnnouncementsUS CeDeFi Trade FAQ
There's no Multi-Party-Computation and no multisig behind passkey wallets as you alone control all authorizations. For security and compatibility reasons, importing external wallets isn't supported. The wallet's private key never leaves your device. The wallet's public key is registered to your wallet account, so DEX applications can verify your signature.Published on Nov 4, 2025Updated on Dec 4, 2025FAQ1Zero-Knowledge Proofs: what are zk-STARKs and how do they work? (zk-Stark V2)
We also enhanced Plonky2 to run some computations on GPUs, reducing the time by an extra 30%. Better auditability: With Version 2, we use a high-level framework that handles complex cryptographic details for us. This makes our code clearer, more readable, and less prone to errors. Concise proof: The V2 proof size (~500KB) is only 0.05% of V1 (~1.2GB).Published on Oct 21, 2024Updated on Feb 11, 2026FAQ92
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