Securely prove the existence of your creative work at a specific moment without uploading your files. Generate legally defensible, tamper-proof cryptographic timestamps and share verifiable PDF certificates.
1.0
March 1, 2026
Expanded stamp limits and blockchain anchoring
STAMPiD creates cryptographic timestamps by computing a SHA-256 fingerprint of your file locally. Only this fingerprint is sent to timestamp authorities and anchored to the Bitcoin blockchain, providing a verifiable record of your file's existence at a specific time.
No, your files never leave your device. STAMPiD only transmits the cryptographic hash (a one-way fingerprint) to trusted timestamp authorities. This ensures your original content remains private and secure.
STAMPiD offers 'Creator' for $4.99/month with 50 stamps, 25 watermarks, and 25 exports, and 'Studio' for $9.99/month with 250 stamps, 100 watermarks, and 100 exports. The free tier includes 5 stamps, 3 watermarks, and 3 exports per month.
Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscriptions directly within your Apple ID account settings.
STAMPiD is rated '4+' by Apple, indicating it is suitable for users aged four and older. The app's focus on cryptographic proof and privacy makes it a secure utility for a wide range of users.
STAMPiD was last updated on March 1, 2026, with version 1.0. This indicates a recent release, and users can expect ongoing support and potential future updates from the developer.
Yes, STAMPiD provides professional PDF certificates with QR verification codes. Additionally, a public verification portal allows anyone to independently confirm your timestamps, ensuring transparency and trust.
STAMPiD is available on iPhone, iPad, and iPod touch devices. This broad compatibility ensures users can protect their creative work across various Apple mobile platforms.
