Proofprint watches how you write — not what you write — to verify that a real human created the content. Earn a cryptographic badge of authenticity that anyone can verify.
Write naturally. Proofprint quietly observes six behavioral signals in the background, then generates a verifiable score.
Use the Proofprint editor just like any writing tool. Your ideas, your flow, your pace.
Six behavioral signals — keystroke dynamics, typing cadence, revision patterns, copy-paste analysis, content naturalness, and session continuity — produce a 0–100 authenticity score.
Get a cryptographically signed badge with a unique verification link that anyone can check.
Each version of your writing gets a cryptographically signed print — linked together in a provenance chain that shows your work evolving over time.
Writers paste things all the time — quotes, notes, AI drafts. Proofprint doesn't penalize you for it. Instead, it asks you to be intentional about what you pasted and why.
Content from an external source — a book, article, or someone else's words. Add optional attribution.
Your own words, pasted from a different document, notes app, or previous draft. Explain where it came from.
Edit pasted content until it's truly yours. Proofprint tracks your changes — confirm once you've rewritten at least 40%.
Content generated or revised by AI. Describe how AI was used so readers can judge for themselves. Transparency over concealment.
Every reconciled paste becomes part of your Proofprint — visible on the public verification page. Readers see exactly how content was sourced, building trust through transparency.
Proofprint never reads your unpublished content. It only observes how you create it.
Natural typing has rhythm — bursts, pauses, varying speeds between words. AI-generated text pasted in bulk has none of these patterns.
Everyone has a unique tempo — the pauses between sentences, the speed of corrections, the flow between paragraphs. Cadence is as personal as handwriting.
Humans rethink, rephrase, and restructure as they write. Proofprint tracks deletions, insertions, and cursor jumps that reveal genuine editing.
A little pasting is normal — a quote, a link. But content created mostly by pasting large blocks scores lower on authenticity.
Human-written content has organic imperfections — varied sentence lengths, natural phrasing, genuine voice. Proofprint detects when these patterns are present.
Real writing takes time. Proofprint checks that the session duration, word count, and interaction patterns are internally consistent.
Whether you're publishing a novel or filing a story on deadline, your audience deserves to know a human wrote it.
In a world flooding with AI-generated books, Proofprint gives readers confidence that your manuscript was genuinely crafted by hand.
Credibility is everything. Proofprint lets reporters attach verifiable proof that their reporting was human-authored, not machine-generated.
Stand out from the noise. A Proofprint badge tells your audience that the content they're reading came from a real person with real thoughts.
All content is encrypted end-to-end by default — Proofprint never sees your unpublished writing. Only the aggregate behavioral scores are transmitted to generate your signed badge. If you choose to publish, you control exactly what becomes public.
Proofprint is currently in private preview. Drop your email and we'll reach out when it's your turn.