Sanctions Screening Methods

The three screening methods, explained.

Overview

Screening is not one method - it is three surfaces with different mechanics, run together on every check.

Exact matching (wallets)

Addresses match byte-for-byte. Deterministic: a wallet either is or is not on the list. No false positives - the ambiguity lives elsewhere.

Fuzzy matching (names)

19,218 SDN names screened with fuzzy logic: aliases, transliteration, partials. Designed for recall - false positives go to review, not straight through.

Jurisdiction screening

16 comprehensively embargoed jurisdictions checked independently of wallet and name. Geography is a third surface, not an afterthought.

The combined call

One sanctions_check runs all three surfaces in under 100 ms and returns the matched entry with the list version - the audit-ready result.