STAMPiD – Proof of Creation

Prove your creative work existed at a specific moment in
time. STAMPiD creates cryptographic timestamps that are
legally defensible, tamper-proof, and verifiable by anyone
-- without ever uploading your files.

Key Features:

- Cryptographic timestamps backed by RFC 3161 authorities
and Bitcoin blockchain anchoring
- Your files never leave your device -- only the SHA-256
hash is sent to the server
- Professional PDF certificates with QR verification codes
for sharing proof
- Evidence folder exports with complete chain-of-custody
metadata
- Public verification portal so anyone can independently
confirm your timestamps
- Audio watermarking for musicians and podcasters to embed
proof directly in recordings

How It Works:
Select any file on your device. STAMPiD computes a unique
SHA-256 fingerprint locally and sends only that fingerprint
to trusted timestamp authorities. You receive a signed
certificate proving your file existed at that exact moment.
The original file never leaves your device.

Subscriptions:
STAMPiD offers optional subscriptions to unlock higher usage
limits:
- Creator: $4.99/month -- 50 stamps, 25 watermarks, 25
exports per month
- Studio: $9.99/month -- 250 stamps, 100 watermarks, 100
exports per month
Payment is charged to your Apple ID account at confirmation
of purchase. Subscriptions automatically renew unless
canceled at least 24 hours before the end of the current
period. You can manage and cancel subscriptions in your
Apple ID account settings. Free tier includes 5 stamps, 3
watermarks, and 3 exports per month.

Privacy:
Your files never leave your device. STAMPiD only transmits
the cryptographic hash -- a one-way fingerprint that cannot
be reversed to reconstruct your original content.

Terms of Service: https://api.stampid.tech/terms
Privacy Policy: https://api.stampid.tech/privacy