Patent Pending · Now Available for Windows

Your students wrote it.
Prove it.

Solus is a desktop writing environment that cryptographically signs every keystroke with ECDSA-P256. When a student submits, you get a tamper-evident certificate — not a guess, not a score. Proof.

Patent Pending
ECDSA-P256 Signing
14-Point Verification
Used at Whitworth University
AES-256-GCM Encryption
How it works

Not detection. Proof.

AI detectors produce scores. Plagiarism checkers flag patterns. Solus produces cryptographic evidence of exactly what was typed and when.

Keystroke-Level Proof

Every character typed in Solus is recorded with a timestamp and signed into an append-only log. Edits, deletions, and revisions are all captured — the full writing process, not just the final text.

AI Content Detection

Pasted content is quarantined into a separate record, not blocked. Students can still paste quotes and citations — those appear transparently in the certificate. The teacher sees exactly what came from the keyboard vs. the clipboard.

Tamper-Evident Certificates

Each .solus file contains a certificate signed with ECDSA-P256. Any modification to the document — even a single character — invalidates the signature and is immediately detected during verification.

The process

From blank page to verified certificate

1

Student writes in Solus

Every keystroke is timestamped and hashed. The editor looks and feels like any word processor — the signing happens invisibly in the background.

2

Essay is sealed with a cryptographic certificate

On save, Solus seals the keystroke log, paste events, and document content into a single .solus file signed with the student's ECDSA-P256 key pair.

3

Teacher verifies provenance instantly

The teacher opens the .solus file in the teacher dashboard or drags it to verify.soluseditor.com. The 14-point check runs in seconds — no account required.

Solus Teacher Dashboard
Recent Submissions 3 new
Essay #3 — Smith, A.
4,218 keystrokes · 0 paste events
VALID
Essay #3 — Chen, M.
2,891 keystrokes · 3 paste events
PARTIAL
Essay #3 — Johnson, T.
1,102 keystrokes · 0 paste events
VALID
Class average: human-typed
78%
For teachers

Grade with confidence.

Your teacher dashboard shows exactly what was typed versus pasted — with timestamps, keystroke counts, and a human-origin percentage. No more gut feelings. No more student disputes that go nowhere.

See how teachers use Solus
For institutions

Academic integrity at scale.

Institutional licenses for classes, departments, or whole universities. Join codes, seat management, batch verification, and CSV export. SSO and Canvas LTI integration coming in 2026.

See institutional options
Pricing

Free for students. Built for classrooms.

Students always download for free. Teachers pay per class. Institutions get volume pricing.

Free
$0
forever

For individual students. Write, save, and submit verified documents.

  • Unlimited documents
  • Full keystroke signing
  • Local verification
  • Teacher dashboard
  • Class management
Download Free
Enterprise
Contact us
unlimited classes

For departments and universities that need institutional controls.

  • Unlimited classes + seats
  • SSO/SAML (coming 2026)
  • Canvas LTI integration
  • API access
  • Dedicated support + DPA
Talk to us

See full feature comparison →

Get started today

Start for free.
No credit card required.

Students download Solus free. Teachers can verify any .solus file without an account.