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