Certificate price

$4.99 buys one file and adds two stamps.

People searching “timestamp certificate cost” or “proof of existence price” usually want three numbers: per file, subscription, and what stays free. A formal certificate is a dated public record of a SHA-256 fingerprint — not a government copyright filing.

• Per file: $4.99. Buy one, get one. Credits do not expire.
• Creator: $9 / month for 20 stamps. Extra files $0.99 each.
• Studio: $39 / month for 100 stamps. Extra files $0.49 each.
• Looking up an existing certificate on /verify never requires payment or login.

First purchase: pay $4.99, receive two stamps. Cancel subscriptions any time.