Resources

DefCrypt Blog

Practical analysis of exchange restrictions, AML, theft, and access recovery — without noise or blanket guarantees.

Laptop with a checklist and a phone showing an address bar on a dark desk, representing exchange due diligence before a deposit
Exchanges

How to Check a Crypto Exchange Before Signing Up

A pre-deposit checklist for a crypto exchange: domain, licence claims, a withdrawal test, support, and “too good” yield—and how a real AML pause differs from a fake platform.

A phone showing a Bybit account and KYC documents on a desk, representing an access check rather than an AML flag
Exchanges

Bybit access for users tied to Russia: geo and KYC, not an AML withdrawal hold

Bybit access restrictions for users tied to Russia: how geo and KYC differ from an AML withdrawal hold, what to check in the help center, and what not to do.

Several account-restriction notices on a laptop, representing a wave of freezes rather than a single headline figure
Exchanges

A wave of freezes for users from Russia and the CIS: not one cause

Crypto account freezes affecting users from Russia and the CIS in 2026: a mix of AML, SoF, geo, and P2P — how to classify the hold and what to do in the first 48 hours.

A smartphone showing a trading-bot chat and a withdrawal freeze message
Exchanges

A Crypto Bot Froze the Account: First Steps Without Extra Payments

A crypto bot froze withdrawals: how to tell a scam bot from a real OTC bot and from an exchange hold, and why extra unlock payments are not support.

A deposit form with an empty memo field beside a confirmed TxID in a blockchain explorer
Exchanges

Forgot a Crypto Memo or Destination Tag: Where the Funds Sit

A transfer sent without a MEMO or destination tag on XRP, XLM, TON, and similar deposits: why funds often sit on an exchange omnibus address, and how to file a ticket with the TxID.

An exchanger screen showing a transfer under review with a high-risk label
Exchanges

Exchanger Hold for a High-Risk Transaction: What It Means

A fiat/crypto exchanger such as Onix paused a transfer as high risk: how that differs from CEX AML, and first steps that do not invent the venue's policy.

Laptop showing a token freeze notice beside a checklist, illustrating the difference between an issuer freeze and an exchange AML hold
Exchanges

USDT Frozen by the Issuer: How This Differs from an Exchange AML Review

USDT frozen by the issuer: a Tether or Circle token-contract blacklist versus an exchange AML hold, how to check an address, and what no one can promise.

Bank card and laptop on a desk representing a P2P fiat transaction and account freeze
Exchanges

P2P account freeze: fiat disputes and evidence

What to do when a P2P fiat dispute or chargeback leads to an account freeze: collect order, bank, and chat evidence and respond through the official appeal process.

Passport and laptop on a light surface, representing preparation of documents for exchange KYC
Exchanges

Crypto Exchange Verification Failed: What to Fix in KYC

What to do when crypto exchange verification fails: common KYC rejections involving documents, lighting, framing, and mismatched data, and what to fix before contacting support.

A laptop showing an account restriction beside a checklist for the first steps after a crypto account freeze
Exchanges

Crypto Account Frozen: A 48-Hour Checklist

What to do when a crypto account is frozen: a checklist for the first 48 hours, one coherent response to an AML request, and why duplicate tickets can be counterproductive.

Financial charts on a laptop screen, representing exchange withdrawal restrictions
Exchanges

Bybit Withdrawal Under Review: What to Check and Send to Support

Distinguish a Bybit security lock from a withdrawal review or account review. First checks, document preparation and a sample support request.

Next step

Need an assessment of your situation?

Briefly describe what happened — without seed phrases or private keys. We will outline possible routes and assess their feasibility.

Request a free assessment
Free initial assessment

Describe what happened

Answer a few questions so we can assess the situation and suggest the next steps.

Do not send seed phrases, private keys, passwords, or 2FA codes. They are not needed for an initial assessment.

Do not send seed phrases, private keys, passwords, or 2FA codes.