Blockchain Audit Log and Event API

Build a searchable, sharable, and tamper-proof audit log or event-based history.

A tamper-proof audit log

Searchable & sharable

Build a tamper-proof audit log in minutes. With our flexible and scalable connector, any event emitted by other services can easily be added to your audit log.

Circle check Tamper-proof
Circle check Customizable
Circle check User-friendly
Timestamped Documents

How it works

Event not locked

Step 1

Transmit your events

Transmit events that matter to you. If you tested a vaccine, a customer made a payment, or an employee deleted a row in a database. You can build your audit trail just as you need it.

Event locked

Step 2


We take all events that we receive from your end and append them to your tamper-proof event history. Inserting, modifying, or updating event data afterward becomes impossible - thanks to blockchain technology.

Event API feed

Step 3

Search, filter & share

Once done, you can share your tamper-proof event-based history or audit log with internal stakeholders or external auditors. You can search and filter through all events in real time. And if you need a PDF of a filtered view, there is a 1-click export.

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Our Technology

Why blockchain makes the difference.

Blockchain anchoring

Any event that is submitted is anchored to multiple public blockchains. This way, you can prove that an event was created at a specific time and not changed since. This proof doesn't expire, is independent of OriginStamp, and remains verifiable at all times.

Continous sealing

We chain each event to the predecessor event. As a result, it's impossible to insert, modify or delete any event from your event trail. In combination with blockchain anchoring, gapless sealing creates undeniable proof of integrity for your event trail.

Event API Pricing

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On premise
Starting at


Multiple event trails
Unlimited retention
Unlimited users
Snapshot export
Query API
Custom SLA
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Up to 1'000 timestamps/month
6 months free
30 min onboarding
Share link white-labelling
Unlimited event trails
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Built with 9+ years of expertise and referenced by 80+ scientific publications.

What's included

White Labelled Event Trail

White Labelling

Embed your logo and customize the Event API to your cooperate identity. Your users will identify the trail as related to your business, but it's still clearly visible that the data is transparently hosted and provided by OriginStamp.

Connector tools

Connect any Software

Connect any software with your tamper-proof audit log. Our solution integrates seamlessly into any software with no coding required. Plug-in via webhooks, form or app builder, or use our comprehensive API.

Shareable link on custom domain

Share Links

Build trust by allowing transparent access for outside stakeholders like end-consumer or partners. Everyone possessing the share link can view your event trail and validate its consistency. These shared trails can also be made accessible within your own domain.

What customers are saying

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We'd love to talk about how we can work together.

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