What is ySign?

ySign is a decentralized app based on Blockchain technology. We are giving our users the chance to communicate free, secure and anonymous. Exchanging information has never been easier and more secure! Thanks to the Blockchain technology, a copy of your private messages and calls will only be saved on your own device. There is no central server, where private information could be stored. ySign ensures 100% security and privacy during the exchange of messages and calls.

Anonymity Guaranteed

We don’t need your private information. The only thing you have to do is generate an “ID key” and create a password. ID keys are exclusively owned by the users. You alone are responsible for the safety of your key!

What’s Special

For Business and Pleasure

ySign was made for you to interact safely with friends and family as well as business colleagues during work assignments.

Global connectedness

We want to connect people all around the world, by helping them overcome language barriers through our integrated translation mode.

Advanced Security

ySign is powered by Blockchain technology, which makes the communication between members decentralized and secure. There is no central server, where private information could be stored or misused.

Modern Design

While designing ySign we tried to create an easy to use app. Our design is clean, modern and simple. We are making communication easy again.


OS Compatibility

ySign is compatible with both operating systems




How It Works


Discover All Features


Decentralized Chat

Powered by Blockchain technology. A copy of your private information is only available on your own device. 100% privacy for all ySign members.


Build a Community

Create a business profile with all the relevant information about your company and share it with your very own community.



Make and receive free calls by using the ySign app. Talk to your friends or colleagues while knowing that no data will be shared with third parties. Conversations are decentralized and cannot be stored in any way.


Chat Translator

Overcome language barriers and connect with people all around the world with our translation mode. We help you translate your chat into another language and understand people from all corners of the world.


Group Chats

Get the job done – easy and safe with ySign! Convenient for businesses or any other group communication. You can always select one person out of the group and the app creates a one-on-one conversation.



Store all your cryptocurrencies on our integrated Wallet. View your current balance at any given time.


Make Your Life Private again

Why Blockchain?

The decentralized Blockchain-based system is our way to secure and guarantee total privacy during the exchange of information. Encrypted Peer-to-Peer communication enables ySign users to freely and securely communicate with each other without any of their personal data being stored on a central server. This way communication between registered users stays only between themselves and their private data is stored only on their own devices. Since there is no centralized copy of any personal data, there is also no chance to misuse any information about our ySign members.



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