Document Sealing as a Service

Powerful and easy-to-use APIs for
sealing and verifying documents.

100 documents free every month

Try Sealninja Now

# Example API call for sealing a document
curl --user 'api:YOUR_API_KEY' \
  --form document='@invoice.pdf;type=application/pdf' \
  --form details='{"seller":"John","price":100}' \
  https://sealninja.com/api/documents/seal

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Why Document Sealing?

By sealing a document, a digital seal (or e-seal) is added to it, which will:

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Prove authenticity

A document’s seal can be verified to ensure the document’s origin.

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Prevent tampering

Altering the content of a sealed document will cause the seal to be invalid.

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Persist details

Valuable details can be included in the document’s seal for additional verification.

Why using Sealninja?

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Powerful API, no hassle with hashing, encrypting, key pairs, etc., we take care of all that.

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Super secure, because we use strong security, authentication, and encryption techniques.

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No sensitive data is stored: we don’t store any documents or seals.

Use cases

work Compliance

To be compliant with most regulations, all contracts containing information critical to business actions are required to be preserved for years in an authentic and irrefutable state. Sealing these contracts with Sealninja enables verification of authenticity and integrity at a later stage.

history Audit trail

An audit trail is a chronological record of security-relevant events from which a history can be reconstructed. Sealing such a record with Sealninja prevents any kind of tampering, allowing the audit trail to be used as legal evidence.

flare New features

Sealninja enables easy development of all kinds of features: from showing 'verified' check marks next to documents in the front-end to checking for corrupted documents in the back-end. Let us know what awesome feature you made with Sealninja!

Pricing

Get started with 100 documents
for free per month.

Pricing plans

Get started

Integrate document sealing into your app
in minutes with our API

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