[KongchangAI]
Expired50% confidenceFactTime unknown

Card numbers generated by virtual card generators are essentially just random digits combined according to the Luhn algorithm, with no real bank account behind them, and cannot be processed through actual payment systems.

1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)

Sources

Can You Really Get GPT Plus for Free? Virtual Card Subscription Risks and Compliant Alternatives
bilibili平平无奇策策

Related Claims

UnverifiedThe last digit of almost all credit card and debit card numbers is a Luhn check digit, which allows card number validity to be determined through mathematical calculation without accessing bank databases74% similar

Cite This Claim

Stable URI
https://kongchang.com/claim/54142
API
curl https://kongchang.com/api/v1/knowledge/claims/54142
MCP
get_claim(id=54142)