# STAMPiD – Proof of Creation — Timestamp Your Creative Work

> Cryptographically timestamp creative work locally for verifiable proof of existence. (iPhone/iPad app by BRIAN CHRISTOPHER WHITE.)

- Source: https://appshunter.io/ios/app/stampid-proof-of-creation/id6758901981 (this page in markdown: same URL + `.md`)
- Developer: [BRIAN CHRISTOPHER WHITE](https://appshunter.io/developer/1875629581)
- Category: Utilities, Music
- Price: Free with in-app purchases
- Rating: 5.00/5 from 3 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 64 MB
- Languages: American English
- Released: 2026-03-01
- Data updated: 2026-06-24
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/stampid-proof-of-creation/id6758901981/reviews.md

## What is STAMPiD?

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

## Key features

- Cryptographic timestamps
- Bitcoin blockchain anchoring
- Files never leave device
- Professional PDF certificates
- QR verification codes
- Audio watermarking

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Studio Plan | $29.99 | per month |
| Creator Plan | $9.99 | per month |


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/stampid-proof-of-creation/id6758901981/reviews.md

### 5/5 — For creators, By creators 🔥

*2026-03-03*

Blockchain is the future of intellectual property rights

### 5/5 — Convenient and Important

*2026-03-01*

The easiest way to protect your stuff. Super simple to use, definitely recommend

### 5/5 — Best of the best

*2026-03-01*

Best app I have ever used

## Frequently asked questions about STAMPiD

### How does STAMPiD prove my work existed?

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.

### Does STAMPiD upload my files?

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.

### What are the subscription tiers for STAMPiD?

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.

### How do I cancel my STAMPiD subscription?

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.

### Is STAMPiD safe for all ages?

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.

### How often is STAMPiD updated?

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.

### Can anyone verify my timestamps with STAMPiD?

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.

### What devices does STAMPiD support?

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.

## Version history (last 1 release)

### 1.0 — 2026-03-01

No release notes.

## Related topics

[proof of work](https://appshunter.io/ios/topics/proof-of-work)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-24.*