Enterprise-grade document verification. Your files never leave your device.
Bachelor of Technology
Computer Science & Engineering
Issued: May 2024 · Roll No. CS20B1058
First Class with Distinction
VERIFIED
Polygon Network
0x8f3b...c9d4
Documents Verified
Organizations
Uptime
Three simple steps to tamper-proof document verification
SHA-256 hash computed locally in your browser. Your document never leaves your device.
Hash checked against Polygon smart contract. Immutable, transparent proof.
Verified, revoked, or not found — in under 2 seconds.
Your documents never leave your device. We only see a 64-character hash — a mathematical fingerprint that cannot be reversed. Even we can't read your files.
const hash = SHA256(file);
// 64-char fingerprint
"a7ffc6f8bf1ed766..."
// File never leaves device
// Only hash sent to chainInstant trust. One click. Zero doubt.
Blockchain Verified · Polygon Network
SHA-256
0xa3f8b2c9d4e71f6823a9b5c0d8e4f1a2b7c6d5e4f3...
Six tiers of verified badges — just like social media, but for real trust
Verified Business · tcs.com
12,450
documents
Verified Institution · iith.ac.in
8,200
documents
Verified Individual · arunsiddardha.com
340
documents
Government Entity · education.gov.in
52,000
documents
Verified NGO · cry.org
3,800
documents
Verified Publisher · ieee.org
28,500
documents
Join 500+ organizations already verifying with ProofCrest
Your Document Wallet
Save verified PDFs, show and verify documents in person, and scan QR codes for instant verification — all from your pocket.
Coming Soon to iOS & Android
Show your verified status to visitors. One line of code — works on any website.
<!-- Add to your website -->
<script src="https://proofcrest.com/sdk.js">
</script>
<div id="proofcrest-badge"
data-org="your-org-id"
data-theme="dark">
</div>Preview
Verified Advocate · Bar Council of India
Doctors, lawyers, CAs — show your verified status on your website
Start free, upgrade when you need more. Verification is always free.
For anyone verifying documents
Custom pricing for universities, banks, government bodies, and large organizations with multiple departments and sub-organizations.
Trusted by organizations like
💚 Special discounts for NGOs, child development organizations, girl education initiatives, and free education nonprofits. We believe in accessible verification for those who need it most.
Integrate document verification in 3 lines of code with our SDK.
$ npm install @proofcrest/sdk
import { verify } from '@proofcrest/sdk';
const result = await verify(file);When you upload a document, we compute its SHA-256 hash on your device. This hash is then checked against the Polygon blockchain. If an organization has registered that exact hash, we show who registered it and when. The document itself never leaves your device.
Yes, 100% free, forever. Verification doesn't cost us gas fees (it's a read-only blockchain query). We want maximum adoption — free verification drives trust in the platform.
No. ProofCrest handles all blockchain interactions behind the scenes. Organizations get custodial wallets, and the platform pays gas fees. Users never interact with crypto.
Even a single byte change produces a completely different hash. This is by design — it ensures that only the exact original document will verify.
We use Polygon (formerly Matic), an Ethereum Layer 2. It offers low gas fees, fast finality (~2 seconds), and full EVM compatibility.
Join 500+ organizations already using ProofCrest for blockchain-powered document verification.
Start Free — No Credit Card Required