LEGAL DOCUMENT

Privacy Policy

Last updated: September 2026

Your privacy is important to us. This policy explains what information we collect, how we use it, and which rights you have. MainChain.AI processes personal data in accordance with the EU General Data Protection Regulation (GDPR) and the German Federal Data Protection Act (BDSG).

1. Controller

The controller responsible for data processing on this website is:

MainChain.AI GmbH

Akazienstrasse 11

61476 Kronberg im Taunus, Germany

Phone: +49 176 5606 7276

E-Mail: Info@MainChain.AI

VAT ID: DE455749360

2. Information we collect

We collect information you provide directly to us, for example when you use our contact form, create an account, or correspond with us. This may include your name, e-mail address, company name, and the content of your message.

When you visit the website, our server automatically records technical access data such as your IP address, the date and time of the request, the requested file, and the referring page. This data is used to deliver the website and to ensure its stability and security.

3. How we use your information

Respond to your inquiries and provide our services
Send technical notices, confirmations, and support messages
Improve our website, services, and documentation
Comply with legal and regulatory obligations

4. Legal basis

Where you have given consent, processing is based on Article 6(1)(a) GDPR. Processing necessary for the performance of a contract or for pre-contractual steps is based on Article 6(1)(b) GDPR. Processing for our legitimate interests, such as secure operation of the website, is based on Article 6(1)(f) GDPR.

5. Cookies and consent

Our website shows a cookie consent banner on your first visit. You can accept or decline non-essential cookies. Technically necessary cookies required to display the site may remain active. Your choice is stored locally in your browser so that the banner is not shown again on your next visit.

6. Data sharing

We do not sell or trade personal information. We share data only with service providers that support us in operating the website and communications infrastructure, and only to the extent necessary. Where we are legally obliged to do so, we may disclose data to authorities.

7. Retention

Contact inquiries are stored until the matter is concluded and then deleted, unless a longer retention period is required by law. Account and profile data are stored for as long as the account is active.

8. Your rights

You have the right to access, rectify, erase, and restrict the processing of your personal data, the right to data portability, and the right to object to processing based on legitimate interests. You may withdraw consent at any time. You also have the right to lodge a complaint with a supervisory authority, in particular the data protection authority of the German state of Hesse.

To exercise any of these rights, contact us at Info@MainChain.AI.

9. Security

We implement appropriate technical and organizational measures, including encryption in transit and access controls, to protect your personal information against unauthorized access, alteration, disclosure, or destruction.

10. Questions

If you have any questions about this Privacy Policy, please contact us through our website or by e-mail at Info@MainChain.AI.

LEGAL DOCUMENT

Terms of Use

Last updated: September 2026

Please read these terms carefully before using our website and services. These terms govern the use of the MainChain.AI website and the services offered through it.

Acceptance of Terms

By accessing and using our services, you accept and agree to be bound by these terms and the provisions of this agreement. If you do not agree, please do not use our website or services.

Use of Services

You may use our services only for lawful purposes and in accordance with these terms. You agree not to use the services in any way that could damage, disable, or impair our systems or interfere with any other party's use of the services.

You must provide accurate and complete information
You are responsible for maintaining the confidentiality of your account
You must not use our services for any illegal or unauthorized purpose
You must not violate any laws in your jurisdiction

Professional Services

Consulting, advisory, and software deliverables are governed by the separate written agreement concluded with the respective client. Where such an agreement exists, it prevails over these website terms.

Intellectual Property

The content, features, and functionality of our services are owned by MainChain.AI and are protected by international copyright, trademark, and other intellectual property laws.

Limitation of Liability

In no event shall MainChain.AI be liable for any indirect, incidental, special, consequential, or punitive damages, including without limitation, loss of profits, data, use, goodwill, or other intangible losses, arising out of or in connection with the use of this website.

Termination

We may terminate or suspend your account and access to our services immediately, without prior notice, for conduct that we believe violates these terms or is harmful to other users, us, or third parties, or would be unlawful.

Changes to Terms

We reserve the right to modify these terms at any time. We will notify you of any changes by posting the new terms on our website. Continued use after changes are posted constitutes acceptance of the revised terms.

Governing Law

These terms are governed by the laws of the Federal Republic of Germany, excluding the UN Convention on Contracts for the International Sale of Goods. The place of jurisdiction is Frankfurt am Main, to the extent the customer is a merchant, a legal entity of public law, or a public-law special fund.

Contact Information

If you have any questions about these Terms of Use, please contact us through our website or by e-mail at Info@MainChain.AI.

LEGAL DOCUMENT

Legal Notice / Imprint

Information according to German law (§ 5 TMG)

MainChain.AI GmbH

Akazienstrasse 11
61476 Kronberg im Taunus
Germany

Commercial Register: HRB 139014

Register Court: Amtsgericht Frankfurt am Main

Represented by the Managing Director: Dr. Burkhard Eisele

Contact

Phone: +49 176 5606 7276

E-Mail: Info@MainChain.AI

VAT ID

Value Added Tax Identification Number according to § 27a VAT Act:
DE455749360

Responsible for content according to § 55 (2) MStV

Dr. Burkhard Eisele
MainChain.AI GmbH
Akazienstrasse 11
61476 Kronberg im Taunus
Germany

Online Dispute Resolution

The European Commission provides a platform for online dispute resolution (OS): https://ec.europa.eu/consumers/odr. Our e-mail address can be found above in this legal notice.

We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board.

Liability for Content

As a service provider, we are responsible for our own content on these pages in accordance with § 7 (1) TMG under general law. However, according to §§ 8-10 TMG, we are not obliged to monitor transmitted or stored third-party information or to investigate circumstances that indicate illegal activity. Obligations to remove or block the use of information under general law remain unaffected. Liability in this respect is only possible from the time of knowledge of a concrete infringement.

Liability for Links

Our website contains links to external third-party websites over whose content we have no influence. Therefore, we cannot accept liability for this third-party content. The respective provider or operator of the linked pages is always responsible for the content of the linked pages. The linked pages were checked for possible legal infringements at the time of linking. No illegal content was recognizable at the time of linking.

Copyright

The content and works created by the site operators on these pages are subject to German copyright and other laws of intellectual property. Any duplication, processing, distribution, and any type of use outside the limits of copyright law require the written consent of the respective author or creator.