Plastron Blog — Page 7
Why Did My Crypto Exchange Ask for a Selfie or Source of Funds?
A selfie or source-of-funds request after a deposit means an enhanced due diligence check fired. What triggers it, what documents clear it, and how to see it coming.
Sanctions · 2026-06-22 · 5 min readHow Does a Crypto Address Get Added to the OFAC Sanctions List?
OFAC lists a crypto wallet as an identifier only after it designates the person behind it. Here is how that process works - and why a clean wallet can still get flagged.
Wallet Security · 2026-06-21 · 6 min readHow to Check and Revoke Risky Token Approvals on Your Wallet
Every swap or mint leaves a standing approval that lets a contract move your tokens, and it never expires on its own. Here is how to find every active token approval, revoke the unlimited and unused ones, and screen the wallet for exposure it may have inherited.
Wallet Screening · 2026-06-21 · 7 min readShould I Screen a Customer's Wallet Before Accepting a Crypto Payment?
Accepting crypto direct to your wallet skips the deposit screen an exchange would run. Here is how to check a customer's payment for taint before you accept it.
What Is · 2026-06-20 · 7 min readWhy Is Your Wallet Blocked on Uniswap? How DeFi Front-End Screening Works
A Uniswap block lives in the website, not the chain. Here is what triggers it, why it is not a freeze, and how to find the on-chain exposure behind it.
AML · 2026-06-20 · 6 min readWhy Do Chainalysis, TRM Labs, and Elliptic Give the Same Wallet Different Risk Scores?
Run one address through different screening tools and the scores rarely match. There is no single official risk score for a wallet - each vendor builds its own labels, clustering, and exposure model. Here is why the numbers diverge, and what a flag from one tool actually tells you.
How To · 2026-06-19 · 7 min readWhy Was My Crypto Withdrawal Rejected for a Risky Destination?
A blocked withdrawal is about where your money is going. Here is why an exchange rejects a risky destination address and how to check it before you retry.
What Is · 2026-06-19 · 8 min readProof of Funds vs Source of Funds: What Crypto Exchanges Actually Want
Exchanges blur proof of funds, source of funds, and source of wealth into one email. Here is what each actually asks and the documents that clear the review fast.
AML · 2026-06-18 · 5 min readDo Crypto Exchanges Share a Blacklist of Flagged Wallets?
There is no shared ban list, yet a wallet flagged at one exchange tends to get flagged at all of them. Here is why, and how to stay clear.
Sanctions · 2026-06-18 · 5 min readHow to Check If Crypto You Received Came From a Sanctioned Exchange Like Garantex
If coins in your wallet trace back to Garantex or its successor Grinex, an exchange can freeze them. Here is how to check your sanctions exposure first.