API v1 Now Available

Your documents, impossible to forge.
Zero knowledge required. Total trust.

We never see your document. We only register its cryptographic fingerprint. Give your clients the power to instantly verify authenticity via QR code.

View API Docs

No credit card · First 500 verifications free · GDPR-ready

How ProofMe Works

A clean, elegant, and legally sound architecture.

1. Local Hashing

Your app or our dashboard calculates a SHA-256 hash of your file securely within the environment. The actual file never touches our servers.

2. API Registration

Send only the 64-character hash string to the ProofMe API, alongside metadata like expiry dates or document types.

3. Instant Verification

We return a unique verification URL and QR code. Embed the QR in your PDF. Anyone who scans it instantly sees if the document is authentic or revoked.

SHA-256 — industry standard

File never leaves your device

GDPR · ISO 27001 ready

REST API · < 100ms response

Who it's for

Any document that must be trusted — or challenged

From powers of attorney to university transcripts and bank statements — if counterfeiting it causes harm, ProofMe stops that harm at the source.

Law firms & notaries

Register deeds, affidavits, and powers of attorney. Prove version integrity in disputes without exposing confidential content.

Banks & financial orgs

Authenticate account statements, loan documents, and regulatory filings. Reduce fraud liability with a tamper-evident audit trail.

Universities & EdTech

Issue diplomas and transcripts with embedded QR. Employers verify credentials in seconds — no phone calls, no delays.

HR & staffing agencies

Verify employment contracts, reference letters, and certificates before they reach onboarding teams.

SaaS developers

Add document verification to any product via REST. Three API calls to register, verify, and revoke — with webhooks for status changes.

Gov't & compliance teams

Maintain immutable records for audits, procurement, and e-signatures without storing sensitive originals on your servers.

Real-world scenarios

What this looks like in practice

Concrete cases where ProofMe saves time, prevents fraud, or holds up in court.

Law / Notary

Power of attorney disputed in court

A client contests the wording of a power of attorney signed six months earlier, claiming the document was altered after signing. The law firm registered the hash at the moment of signing. The judge queries ProofMe in open court — the hash of the contested document matches the registry entry timestamped to the signing date.

Dispute resolved without a forensic expert. Case closed in 20 minutes.

EdTech / HR

Fake degree in a job application

A candidate submits a PDF diploma from a prestigious university. HR scans the QR code. ProofMe reports: hash mismatch — the file has been modified since the university registered it. The original had a different GPA and graduation year.

Fraud caught at screening. Zero cost to the employer.

Banking / Compliance

Altered bank statement in a loan application

An applicant presents a three-month bank statement showing inflated balances. The issuing bank registered statements at export time. The lending institution scans the QR — status: Authentic. Had the PDF been edited, the hash would not match.

Loan underwriting made auditable. Fraud risk quantifiably lower.

By the numbers

Built for scale. Designed for trust.

<100ms

Average verification response time

0 bytes

Of your document stored on our servers

99.9%

API uptime SLA on paid plans

SHA-256

Collision probability: 1 in 2¹²⁸

3 calls

Full register–verify–revoke lifecycle

∞

Verifications per registered document

Pricing

Start free. Scale when you're ready.

No per-verification fees on paid plans. Pay once per document registration and verify as many times as you need.

Free

For individuals and pilots. No card required.

500 document registrations / mo
Unlimited verifications
QR code + verification URL
Manual revocation
Dashboard access

Common questions

Ready to secure your document workflow?

Join forward-thinking companies proving authenticity without compromising privacy.

Your documents, impossible to forge.Zero knowledge required. Total trust.