Live on Polygon Mainnet

Prove Your Integrity
When It Matters Most

ChainSeal creates an immutable proof of your documents on the blockchain. Anyone can verify. No one can tamper. Trust becomes unnecessary.

When Disputes Arise, No One Can Prove Document Integrity

History's biggest corporate scandals share one common thread: when auditors asked for proof, no one could independently verify whether documents had been altered.

Germany, 2020
Wirecard
€1.9B Lost

€1.9 billion in cash simply didn't exist. KPMG couldn't verify if bank statements were authentic. First DAX company to go bankrupt.

China/US, 2020
Luckin Coffee
$310M Fabricated

Employees ran a parallel fake database. $310M in fabricated revenue went undetected until a short-seller investigation.

USA, 2001
Enron
$74B Destroyed

Arthur Andersen shredded audit documents during investigation. $74B in shareholder value evaporated. Led to Sarbanes-Oxley Act.

In every case, the evidence chain depended on trusting the accused party's own systems.

A Decentralized Trust Layer for Documents

When a document is signed, we write its cryptographic fingerprint to a public blockchain. From that moment, anyone can verify — without trusting us or anyone else.

📄

Document Signed

Your existing signing workflow remains unchanged

🔐

Hash Generated

SHA-256 fingerprint computed locally

⛓️

Sealed on Chain

Hash + timestamp recorded on Polygon

Anyone Verifies

Independent verification in 3 seconds

Trust Elimination, Not Trust Transfer

Traditional solutions transfer trust to a single authority. ChainSeal eliminates the need for trust entirely.

TSA + Digital Signatures
ChainSeal
Trust Model
Relies on single authority (CA/TSA)
No single point of trust required
Validity Period
Certificates expire, need renewal
Permanent, no maintenance needed
Continuity Risk
Authority fails → verification breaks
Works even if ChainSeal disappears
Verification
Requires access to provider services
Anyone can verify independently

Your Documents Never Leave Your System

Only the SHA-256 hash goes on-chain — a 64-character fingerprint that cannot be reversed to reveal your document's content. Your files stay exactly where they are.

Simple, Transparent Pricing

Start small, scale as you grow. All plans include full blockchain verification.

Starter
For small teams getting started
$99/mo
100 documents included
  • Polygon blockchain
  • Web dashboard
  • Email support
  • CSV export
Get Started
Enterprise
For large-scale deployments
Custom
Unlimited documents
  • Everything in Professional
  • SSO integration
  • Dedicated support
  • Custom SLA
Contact Sales

Built by Engineers Who Understand the Problem

👨‍💻
Haoche Chiu
CEO

Strong background in computer science, with experience in AI, systems research, and international academic collaboration.

👩‍💻
Yuyi Chang
CTO

Background in electrical engineering and computer science, with a focus on AI, human-centered systems, and interdisciplinary projects connecting technology with social impact.

Ready to Prove Your Integrity?

Join forward-thinking organizations that are building trust through transparency.