Proof is free. Pay only for more of it.
If you write, you can prove it at no cost, today. Publishers pay to check it, platforms pay to build it in, and nobody pays to keep what they already have.
Sign as much as you like on your own machine, always free. Publish up to 10,000 proofs a month to the public registry at no cost; that is 10x the free tier of a leading text-watermarking service, which stops at 1,000 items a month.
Pricing Tiers
Free
Start recording proof today, so the next time someone asks whether you wrote it, you already have the answer
Free forever. No credit card required.
- Record every writing session, no limits
- Publish up to 10,000 proofs a month to the public registry, free
- Keep writing in the editor you already use
- Your text stays on your machine; recording and signing run locally
- Export an Authorship Report when someone asks
- Community support
Pro
For freelancers and authors whose income depends on a client believing them
- Everything in Free
- A desktop app that records quietly while you work
- Independent timestamps that prove when you wrote each draft
- An invisible watermark so your text carries your name wherever it is pasted
- One click to hand a client or editor the full evidence package
- Priority support when a deadline or a dispute is on the line
Publisher
100 free verifications per month, then pay as you grow. For agents, publishers and journals who need evidence instead of a guess
- 100 free verifications per month
- Verify submissions in bulk through a REST API
- Process an entire slush pile or issue in one batch
- Dashboards that show your AI-disclosure policy is being followed
- Contribution roles that map to NISO CRediT, so credit lines stay accurate
- Dedicated account manager
- SLA guarantees
Compare Plans
| Feature | Free | Pro | Publisher | Platform |
|---|---|---|---|---|
| Records your process as you write | ||||
| Authorship Report you can hand to anyone | ||||
| Native desktop apps | — | — | — | |
| Hardware-signed proof (TPM/Enclave) | — | — | ||
| A visual timeline of every draft | — | — | ||
| REST API access | — | — | ||
| Verify manuscripts in bulk | — | — | ||
| Dashboards for your disclosure policy | — | — | ||
| SDK & embeddable components | — | — | — | |
| On-premises deployment | — | — | — | |
| Custom branding | — | — | — | |
| Dedicated account manager | — | — |
Need it inside your own walls?
Run it air-gapped, set the SLA your legal team asks for, price it for your volume, and get an engineer who stays until it works.
Contact SalesCore tools remain open source under the WritersProof Protocol. If you write for yourself, it stays free forever, and your proof stays valid even if we disappear.