A cryptocurrency wallet address is just a string of characters — on its own, it carries no name, no jurisdiction, and no history. But every transaction that address has ever made is permanently recorded on a public blockchain, which means a wallet address is actually one of the most traceable identifiers in modern finance, if you know how to read the trail. Wallet screening is the process of doing exactly that: checking an address against known-bad lists and reconstructing who it has actually transacted with.

The first layer of wallet screening is a blocklist check — comparing the address against databases of sanctioned wallets (the crypto equivalent of an OFAC list) and addresses previously flagged for fraud, ransomware payments, or other illicit activity. A direct hit here is unambiguous. But most real screening questions aren’t that simple — a wallet with no direct sanctions hit can still be one or two hops away from a sanctioned address, which is where transaction-graph analysis comes in.

A transaction graph maps every counterparty a wallet has sent funds to or received funds from, laid out visually rather than as a raw list of hashes. This is where patterns become obvious: a wallet that transacts broadly with exchanges, merchants, and other ordinary addresses looks nothing like a wallet whose transaction history funnels almost entirely through a single mixing service or a small cluster of previously-flagged addresses. Attribution services can go a step further, tying anonymous counterparty addresses to known real-world entities — exchange deposit addresses, previously identified actors — so a reviewer isn’t left staring at unlabeled strings of characters.

None of this is useful if the findings can’t be turned into something a compliance officer can actually file. WalletINT screens the address, builds the transaction graph, pulls in real-world attribution where it exists, and exports the whole finding as a structured Suspicious Activity Report — with the blocklist result, the graph, and every attributed counterparty already documented, ready for filing rather than needing to be manually assembled from three different tools afterward.