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ProofStamp: Timestamped Evidence Capture

Chrome extension by OnceWorks Tools · Productivity · Developer

  • Trader

A Chrome extension in Productivity · Developer with 4 users, barely installed.

Specific sites only: 1 match pattern.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
4 (the store no longer states an audience; this is the last figure it published)
Rating
not rated yet
Users, last 17 days
+4
Version
1.1.0
Updated in the store
2026-09-07
Published
2026-07-20
Manifest
V3
Browser access
4 permissions, 1 site pattern

How it has moved

Users
+4 since 01.09
0-4 · 6 readings
2026-09-07: released 1.1.0
  1. 2026-09-010
  2. 2026-09-022
  3. 2026-09-062
  4. 2026-09-084
  5. 2026-09-100
  6. 2026-09-174
Users
+4 since 01.09
0-4 · 6 readings
2026-09-07: released 1.1.0
  1. 2026-09-010
  2. 2026-09-022
  3. 2026-09-062
  4. 2026-09-084
  5. 2026-09-100
  6. 2026-09-174

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 1 match pattern.

  • https://api.gumroad.com/*
  • Manage your downloads downloads
  • Run its own code on the pages it can access scripting
  • Act on the current tab, but only after you click it activeTab
Show the remaining 1
  • Store data in your browser storage

The full permission history for this extension

Version history

  1. Version 1.1.0

What changed recently

  1. Package size changed
  2. Store description rewritten (113 → 130 characters)
  3. Moved to another store category
Show the remaining 1
  1. Released version 1.1.0 (was 1.0.0)

The publisher

OnceWorks Tools publishes 2 listings we track, 10 users between them.

  1. MomentNotes: YouTube Notes with Timestamps OnceWorks Tools · Productivity · Education · published 2026-07-20 6 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. ProofSnap - Digital Evidence Capture Describes nearly the same job, smaller audience 429 users ★ 4.8
  2. GLOBEL Evidence Stamp Describes nearly the same job, smaller audience 6 users
  3. CompliSnap - Professional Audit Screenshots Describes nearly the same job, smaller audience 10 users ★ 1.0
  4. WebNotary — Evidence-Grade Web Capture Describes nearly the same job, smaller audience 13 users ★ 5.0
  5. Consumer Dispute Snapshot Describes nearly the same job, smaller audience 3 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.