Proof does not store your credit card information.
Stripe securely processes all of Proof's transactions. Because of this, your credit card number is encrypted and safely stored in Stripe’s state-of-the-art data center.
All transactions are SSL (Secure Socket Layer) protected. Stripe is a PCI Service Provider Level 1, the highest payment processing security grade.
The only information Proof sees about a transaction is whether a payment was approved or declined.