admin_api/config/payment.php

<?php
/**
 * 支付方式配置
 * 
 * key   = order_title 字段的位掩码值
 * value = [
 *   'key'  => 存储/传输用的键名（小写）
 *   'name' => 展示用的名称
 * ]
 */
return [
    'methods' => [
        1 => ['key' => 'cashapp',     'name' => 'Cash App'],
        2 => ['key' => 'paypal',      'name' => 'PayPal'],
        4 => ['key' => 'applepay',    'name' => 'ApplePay'],
        8 => ['key' => 'googlepay',   'name' => 'GooglePay'],
        16 => ['key' => 'btcpay',     'name' => 'BTC'],
        32 => ['key' => 'eth',        'name' => 'ETH'],
        64 => ['key' => 'usdt-trc20', 'name' => 'USDT-TRC20'],
        128 => ['key' => 'usdt-erc20','name' => 'USDT-ERC20'],
        256 => ['key' => 'usdc-trc20','name' => 'USDC-TRC20'],
        512 => ['key' => 'usdc-erc20','name' => 'USDC-ERC20'],
        1024 => ['key' => 'usdt',     'name' => 'USDT'],
        2048 => ['key' => 'usdc',     'name' => 'USDC'],
    ],
];