The Brunei dollar is interchangeable one-to-one with the Singapore dollar by treaty, tying settlement to XSGD on-chain; cards and SWIFT cover the rest.
Cards through your own processor account and SWIFT for cross-border transfers, available in Brunei like everywhere.
Brunei-dollar checkouts can offer SWIFT for bank transfers and cards through your own Stripe or Verifone account.
56 assets on 34 networks settle identically worldwide: non-custodial, final, around the clock.