WritersProof by WritersLogic

Cryptographic proof of human authorship. Build tamper-evident evidence of your writing process as you type.

About this extension

WritersProof witnesses your creative process and produces cryptographic proof that you — a human — authored your work.

How it works:
As you write in Google Docs, Overleaf, Medium, Notion, or 40+ supported editors, WritersProof silently records SHA-256 content hashes and inter-keystroke timing intervals. This data is chained into a tamper-evident evidence packet proving your writing happened over real time with natural human behavior.

What it is not:
Not a keylogger — never captures what you typed. Not AI detection — does not analyze your words. Not surveillance — no content leaves your device.

Two modes:
- Standalone (browser-only): SHA-256 hash chains stored locally. No installation required. Free.
- Enhanced (with desktop app): Hardware-backed Ed25519 signatures, VDF time-proofs, and Secure Enclave binding.

Who needs this:
Students accused of using AI. Authors protecting manuscripts. Journalists documenting original reporting. Academics proving research integrity.

Supported editors:
Google Docs, Overleaf, Medium, Notion, WordPress, Substack, Ghost, Scrivener Web, and 30+ more.

Privacy:
Your manuscript content is never captured, stored, or transmitted. Only one-way cryptographic hashes and timing intervals are recorded. Everything runs locally.

Standards:
IETF Internet-Draft (RATS WG). CBOR/COSE wire format. C2PA compatible. IANA-registered CBOR tags. Apache 2.0 reference implementation.

Learn more: https://writerslogic.com/protocol

Developer comments

This is the initial public release (v1.0.0). The extension is fully functional in standalone browser-only mode.

Known limitations:
- Native messaging (desktop app integration) requires the WritersProof desktop app, currently available for macOS. Windows version coming Q3 2026.
- The extension does not yet support offline document editors (e.g., LibreOffice). Desktop app handles local files.
- Checkpoint chain export to .cpoe evidence packages is only available with the desktop app.

https://github.com/writerslogic/writersproof/issues

Roadmap:
- v1.1: Auto-witness mode (automatically start when a supported editor is detected)
- v1.2: In-browser evidence export without desktop app
- v1.3: Collaborative document support (Google Docs multi-author sessions)

Rated 0 by 0 reviewers

Permissions and data

Required permissions:

Exchange messages with programs other than Firefox
Access your data for sites in the etherpad.org domain
Access your data for sites in the wordpress.com domain
Access your data for sites in the ghost.io domain
Access your data for sites in the substack.com domain
Access your data for docs.google.com
Access your data for www.overleaf.com
Access your data for medium.com
Access your data for notion.so
Access your data for www.notion.so
Access your data for www.craft.do
Access your data for coda.io
Access your data for app.clickup.com
Access your data for app.nuclino.com
Access your data for stackedit.io
Access your data for hackmd.io
Access your data for hemingwayapp.com
Access your data for quillbot.com
Access your data for prowritingaid.com
Access your data for app.prowritingaid.com
Access your data for app.grammarly.com
Access your data for languagetool.org
Access your data for www.deepl.com
Access your data for writefull.com
Access your data for www.jasper.ai
Access your data for app.copy.ai
Access your data for chat.openai.com
Access your data for chatgpt.com
Access your data for claude.ai
Access your data for gemini.google.com
Access your data for www.bing.com
Access your data for copilot.microsoft.com
Access your data for www.icloud.com
Access your data for www.office.com
Access your data for onedrive.live.com
Access your data for www.dropbox.com
Access your data for www.wattpad.com
Access your data for archiveofourown.org
Access your data for www.scribophile.com
Access your data for reedsy.com
Access your data for www.penana.com
Access your data for pad.riseup.net
Access your data for write.as
Access your data for wordpress.com

Optional permissions:

Access your data for sites in the etherpad.org domain
Access your data for sites in the wordpress.com domain
Access your data for sites in the ghost.io domain
Access your data for sites in the substack.com domain
Access your data for docs.google.com
Access your data for www.overleaf.com
Access your data for medium.com
Access your data for notion.so
Access your data for www.notion.so
Access your data for www.craft.do
Access your data for coda.io
Access your data for app.clickup.com
Access your data for app.nuclino.com
Access your data for stackedit.io
Access your data for hackmd.io
Access your data for hemingwayapp.com
Access your data for quillbot.com
Access your data for prowritingaid.com
Access your data for app.prowritingaid.com
Access your data for app.grammarly.com
Access your data for languagetool.org
Access your data for www.deepl.com
Access your data for writefull.com
Access your data for www.jasper.ai
Access your data for app.copy.ai
Access your data for chat.openai.com
Access your data for chatgpt.com
Access your data for claude.ai
Access your data for gemini.google.com
Access your data for www.bing.com
Access your data for copilot.microsoft.com
Access your data for www.icloud.com
Access your data for www.office.com
Access your data for onedrive.live.com
Access your data for www.dropbox.com
Access your data for www.wattpad.com
Access your data for archiveofourown.org
Access your data for www.scribophile.com
Access your data for reedsy.com
Access your data for www.penana.com
Access your data for prosemirror.net
Access your data for pad.riseup.net
Access your data for write.as
Access your data for wordpress.com
Access your data for substack.com

Data collection:

The developer says this extension doesn't require data collection.