Merchants who have had accounts closed by a payment processor sometimes use "blacklisted" to describe any situation where a processor has refused or terminated their account. In a technical sense, there are two distinct categories of blacklisting with different implications for the merchant's ability to secure future conventional payment processing. The first is MATCH list placement, which is a formal Mastercard database entry that acquiring banks are required to check before approving new merchant accounts. MATCH list placement is the most consequential form of blacklisting because it operates across the entire acquiring bank network rather than being specific to any one processor.
The second category is processor-specific blacklisting, where a platform like Stripe, PayPal, or Square has flagged the merchant's account and closed it, but has not necessarily triggered a formal MATCH list report. Processor-specific blacklisting affects the merchant's ability to work with that specific platform and potentially with other processors that share risk data or that identify the same flag during their own underwriting review. In either case, blacklisted merchant crypto payment processing through 27 Blockchain addresses the payment acceptance problem regardless of which type of blacklisting the merchant has experienced. The blockchain infrastructure does not involve MATCH list checks or inter-processor risk data sharing.
