Check any wallet (EVM 0x address or Solana base58, case-sensitive) before paying it or taking its money: OFAC SDN list on both families; on Solana also the issuer freeze of USDC and EURC (Circle), USDT (Tether), PYUSD and USDG (Paxos) and USD1 (World Liberty), the issuer freeze index, and a fund trail up to three hops back. Returns verdict passed, blocked or unavailable, with each check. Paying an invoice (invoice_pay) runs this check on the receiving wallet and refuses with receiver_blocked, so a payment through Vurto Payments never reaches a sanctioned or frozen wallet. To pay someone directly, create an invoice to their wallet (invoice_create) and pay it with invoice_pay. Plain swaps (swap_build, double_build, nn_build) do not run it.