/**
 * Shared ERC-20 Transfer verification utility.
 *
 * Used by both evm-server.ts (direct payments) and bridge-server.ts
 * (bridged payments on the target chain).
 */
interface VerifyErc20TransferOptions {
    /** Transaction hash (0x-prefixed) */
    txHash: string;
    /** RPC URL for the chain */
    rpcUrl: string;
    /** ERC-20 token contract address */
    tokenAddress: string;
    /** Expected recipient address */
    recipient: string;
    /** Minimum expected amount in base units */
    expectedAmount: bigint;
}
/**
 * Verify that an on-chain transaction contains a valid ERC-20 Transfer event
 * to the expected recipient for at least the expected amount.
 *
 * @throws if the transaction is missing, failed, or doesn't match.
 */
declare function verifyErc20Transfer(opts: VerifyErc20TransferOptions): Promise<void>;

export { type VerifyErc20TransferOptions, verifyErc20Transfer };