Your Contracts, Unreadable to Us

Attest encrypts each document in the sender's browser before upload. The service stores only data it cannot read, while the evidence of every signature stays checkable.

About this video

Contracts hold prices, plans and commitments that should stay between the parties. Attest is built so that the signing service itself cannot read them.

  • Each document is encrypted in the sender's browser before it is uploaded.
  • Only the people who sign it can open it, on their own devices.
  • Agreements are anchored on Horizen as fingerprints, never their content.
  • Anyone can still check the evidence of the signatures, without seeing the terms.

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Two documents are free, with no credit card. The people you send documents to never pay and never need a crypto wallet.