创建卡密，绑定设备，给程序做在线校验。

POST https://ph.pkm66.cc/api.php?action=verifyContent-Type: application/x-www-form-urlencoded

product_code=APP_PRO
license_key=PKM-XXXXX-XXXXX-XXXXX-XXXXX
machine_code=DEVICE-12345
device_name=Office-PC

{
  "ok": true,
  "message": "卡密有效",
  "product": "APP_PRO",
  "license_key": "PKM-XXXXX-XXXXX-XXXXX-XXXXX",
  "expires_at": "2026-12-31 23:59:59",
  "machine_limit": 1,
  "bindings_used": 1
}