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APIBTC Schnorr Signer

Chrome extension by The Hyperlabs · Productivity · Tools

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

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 2 screenshots

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

Users
4
Rating
not rated yet
Users, last 18 days
unchanged
Version
1.0
Updated in the store
2025-07-20
Published
2025-07-20
Manifest
V3
Browser access
1 permission

How it has moved

Users
unchanged since 31.08
4-5 · 9 readings
  1. 2026-08-314
  2. 2026-09-035
  3. 2026-09-044
  4. 2026-09-055
  5. 2026-09-074
  6. 2026-09-095
  7. 2026-09-104
  8. 2026-09-155
  9. 2026-09-174
Users
unchanged since 31.08
4-5 · 9 readings
  1. 2026-08-314
  2. 2026-09-035
  3. 2026-09-044
  4. 2026-09-055
  5. 2026-09-074
  6. 2026-09-095
  7. 2026-09-104
  8. 2026-09-155
  9. 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

No site access is declared in the manifest, so it cannot read the pages you open on its own.

  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

The Hyperlabs. Listed website: apibtc.org.

Like this one

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

  1. SlothSign Describes nearly the same job, smaller audience 4 users
  2. NodeGuard Companion Describes nearly the same job, smaller audience 10 users
  3. CFCA CryptoKit.shjt Extension Describes nearly the same job, smaller audience 61 users
  4. ProtonPay Signer Describes nearly the same job, smaller audience 3 users
  5. CFCA CryptoKit.ZXWTG Extension Describes nearly the same job, smaller audience 30 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.

See what the panel does

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.