# Proof Stamp — Blockchain Timestamp Proof

> Blockchain Timestamp Proof (iPhone/iPad app by Takuya Enomoto.)

- Source: https://appshunter.io/ios/app/proof-stamp/id6804431365 (this page in markdown: same URL + `.md`)
- Developer: [Takuya Enomoto](https://appshunter.io/developer/6800335612)
- Category: Productivity, Photo & Video
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 21 MB
- Languages: American English, Japanese
- Released: 2026-10-29
- Data updated: 2026-11-01

## What is Proof Stamp?

Proof Stamp timestamps your photos, videos, recordings, and notes with a tamper-proof record, anchored to the Bitcoin blockchain, that proves when your data existed.

USE CASES
- Document harassment or misconduct on the spot, right when it happens
- Photograph a rental unit's condition when you move in or out
- Record when freelance work or deliverables were completed
- Timestamp an idea or note before a "he said, she said" dispute

WHAT YOU CAN DO
- Capture a photo or video, record audio, or write a note directly in the app
- Upload existing photos, PDFs, videos, or audio files from your device
- Anchor a hash of your data to the Bitcoin blockchain using OpenTimestamps, independently verifiable by anyone
- Issue a timestamp verification certificate (PDF)
- Access the same files from your browser at getproofstamp.com

PLANS
- Free: up to 100MB, images/text/PDF only
- Standard / Pro: audio and video support, larger storage

Proof Stamp does not certify that the contents of your data are true, and a timestamp alone is not a guarantee of legal admissibility. It is a record of an objective fact: this data existed at this point in time.

AUTO-RENEWABLE SUBSCRIPTIONS
- Standard and Pro are monthly auto-renewable subscriptions.
- Payment is charged to your Apple Account at confirmation of purchase.
- Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, and your account is charged for renewal.
- You can manage or cancel your subscription in your App Store account settings after purchase.

TERMS AND PRIVACY
- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- Terms of Service: https://getproofstamp.com/en/terms
- Privacy Policy: https://getproofstamp.com/en/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro | $9.99 | per month |
| Standard | $0.99 | per month |


## Is Proof Stamp safe?

Not enough ratings yet to assess Proof Stamp.

## Is Proof Stamp legit?

Proof Stamp has limited verification signals. The AppsHunter Legitimacy Score for Proof Stamp is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-29

No release notes.

## More apps by Takuya Enomoto

- [ロト帳](https://appshunter.io/ios/app/id6800335610)

All apps by Takuya Enomoto: https://appshunter.io/developer/6800335612

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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 2026-11-01.*