Usage: /shopify?site=https://example.com&cc=number|month|year|cvv&proxy=ip:port:user:pass
Proxy format: ip:port:user:pass (e.g., 154.16.206.146:12345:tickets:proxyon145)
Example: /shopify?site=https://shop.hooters.com&cc=5242430428405662|03|28|323&proxy=N/A
Response format (compact JSON, single line):
{"Response":"CARD_DECLINED","Status":"true","Price":"$25.99","Gateway":"Normal","cc":"5242430428405662|03|28|323"}