Quantum Notary
View credit packsOne-time credit packs in an accountCheck a file freePaste a hash or drop a file — no account needed
Examples
Help CenterPractical guides for your next stepLearning CenterPlain-language lessons with live browser examplesBlockchain evidence in courtDocumented cases and what the courts considered
Security
Create an accountSign in

◈ Legal

Everything you agreed to,in one place.

The terms of service, privacy notice, subprocessor list and acceptable use policy. A data processing addendum (DPA) is not available.

TermsPrivacySubprocessorsAcceptable use

Data Processing Addendum

For customers who need the processor relationship written down.

Status

Not currently available · 2026-10-11

Sections
01Status02What is already documented03Requesting it

§ 01

Status

A Data Processing Addendum is not currently available.

§ 02

What is already documented

The substance a DPA would describe is already public: what is collected and what is not, in the Privacy Notice; who touches it, on the Subprocessors document; and the security measures around it, on the security page.

§ 03

Requesting it

If your organization requires one, contact [email protected].

A DPA is not currently available.

The Privacy Notice and Subprocessors document describe current practices. They do not replace a DPA if your organization requires one.

Read the termsContact us
Quantum Notary

Anchor a SHA-256 digest on Base and retain a receipt for later comparison. The chain stores the digest, not the original file.

Quantum Notary is a product of Endurance Applications.

Product

Create a free accountCheck a file free
View credit packs

Reading

Learning CenterExamplesHelpSecurity

Company

AboutContactSign inCreate a free account

Legal

All documents
© 2026 Endurance Applications
[email protected]