Record your document's cryptographic hash on the Polygon blockchain. Create permanent, tamper-proof proof that your document existed at a specific moment in time.
A simple process that creates permanent proof of your document's existence
Upload your PDF to DocuStamper. Your document never leaves our secure servers.
We create a unique SHA-512 fingerprint of your document - change one pixel and the hash changes.
The hash is permanently recorded on Polygon blockchain with the exact timestamp.
Receive a certificate with transaction hash - verifiable forever on PolygonScan.
Once recorded on the blockchain, your timestamp cannot be altered, deleted, or backdated by anyone - including us.
Blockchain timestamps are recognized under EU eIDAS regulation and accepted in courts worldwide as evidence of prior existence.
Anyone can verify your timestamp directly on PolygonScan - no need to trust DocuStamper or any third party.
Polygon network fees are fractions of a cent. We include timestamps in your subscription - no per-document fees.
Polygon confirms transactions in approximately 2 seconds - your proof is permanent almost instantly.
Blockchain data persists indefinitely. Your timestamp proof will be verifiable in 10, 50, or 100 years.
Prove contracts, agreements, and legal documents existed before a specific date
Establish prior art for patents, designs, and intellectual property
Timestamp research data and findings to prove originality
Timestamp financial records, compliance documents, and audit trails
Prove creation date of artwork, manuscripts, and creative works
Timestamp medical records and clinical trial data
Privacy Note: Only the document hash is recorded on the blockchain - not the document itself. Your document content remains private and is never shared.
Available on Starter plan ($9/month) and above. No per-document fees.