Sanctions Screening Between Crypto Exchanges Is Becoming a Network Layer

Sanctions screening in crypto is migrating from isolated exchange controls to a shared network layer that sits between virtual asset service providers. This layer links counterparty discovery, Travel Rule messaging, and sanctions/KYT decisions in near real time. The regulatory signal is getting sharper, and commercial networks are already routing large flows across jurisdictions.

On the regulatory side, the U.S. Treasury’s Office of Foreign Assets Control has long directed crypto firms to run risk‑based programs that screen customers and transactions against sanctions lists, including the SDN list (OFAC guidance, Oct. 2021). The next step is more prescriptive. A joint FinCEN/OFAC proposal from April 10, 2026 would require permitted payment stablecoin issuers to maintain sanctions programs with technical capabilities to block, freeze, reject, or otherwise prevent impermissible transactions on both primary and secondary markets (FinCEN & OFAC NPRM).

Enforcement‑relevant volumes are part of the justification. Between Jan. 1, 2015 and Nov. 21, 2025, FinCEN recorded roughly 55,000 suspicious activity reports that reference specific stablecoins, while OFAC received about 5,800 blocked‑property reports and approximately 3,000 rejected‑transaction reports referencing stablecoins, according to the same proposal (FinCEN & OFAC NPRM). The Financial Action Task Force has also warned that estimates suggest a majority of on‑chain illicit activity is now transacted in stablecoins and documented uneven Travel Rule implementation across jurisdictions (FATF, June 2025). That combination of volumes and urgency is pushing screening outward from the walls of each exchange.

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