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GNU TALER PRESERVING PRIVACY ON ELECTRONIC PAYMENT SYSTEMS USING DIGITAL COINS
STORED IN SELF-CUSTODY ON USER’S DEVICES

Christian Grothoff, CEO of Taler Systems

Taler Systems SA is a technology company specialising in creating free software
for digital payment systems. Our flagship product, the GNU Taler System, is a
privacy-respecting digital payment system with built-in age restrictions that
allows for fast and secure transactions with anonymity for the buyer. The Taler
system uses established cryptography, ensuring that transactions are processed
quickly and securely with user privacy. This makes the GNU Taler system ideal
for use in various industries, including e-commerce, micropayments, and the
sharing economy. The GNU Taler system is highly scalable, allowing it to handle
many transactions per second on cheap and power-saving hardware.

Overall, the GNU Taler system offers a unique solution for anyone looking to
securely and anonymously process digital payments in the spirit of GDPR. GNU
Taler works for standard and crypto-currencies.

HOW DID THE PROJECT BEGIN?

Working on a decentralized privacy-preserving Next Generation Internet, it was
clear that we needed a privacy-preserving payment system. However, blockchains
were not a socially desirable solution due to their high environmental and
social cost.

DID YOU HAVE A CONCEPT OF YOUR FINAL PROJECT IDEA, OR DID IT EVOLVE DURING THE
PROCESS?

We have over time, added various features based on ideas from the team or
requirements brought to us from third parties, but the basic idea of building a
privacy-preserving payment system has remained unchanged.

GNU Taler Team

MEET THE TEAM

We are a global community of Free Software developers and privacy activists with
roots in the GNU project. We have contributors of all genders from ages 14 to 70
years and over a dozen countries speaking various natural and programming
languages, trying to follow the culture of the GNU way of communicating.

GNU Taler has repeatedly received support from NGI
NGI funded the first external security audit of the protocol and core
implementation, the integration into the e-commerce solution WooCommerce with
usability studies, scalability experiments on the Grid5000, age-restrictions,
escrow and peer-to-peer payments, accessibility reviews to ensure the payment
system is usable by blind people and is providing ongoing funding for
enhancements to support regional currencies and the development of a Taler
wallet on iOS.

HOW DID YOU LEARN ABOUT NGI?

We probably first learned about NGI during consultations that resulted in the
inception of the NGI program.

WHAT WAS THE STATUS OF YOUR PROJECT/TECHNOLOGY SITUATION BEFORE APPLYING FOR NGI
FUNDING?

At the time of our first NGI funding for GNU Taler, we had a first working
prototype with academic publications backing the idea but no external reviews of
the Taler-specific code.

WILL YOU BE TAKING THE IDEA FURTHER NOW THAT THE SUPPORT FROM NGI IS OVER?
PLEASE OUTLINE A LITTLE ABOUT HOW THE PROJECT CONTINUES TO BE USED OR TO EVOLVE.

NGI support is still ongoing, and we hope that with continued support, we will
be able to bring GNU Taler into the European market as a payment solution
operated by retail or central banks.

WHAT IS THE ADVANTAGE OF BEING PART OF THE NGI COMMUNITY?

Among NGI projects, what is great is that we find mutual respect for certain
core values (Free Software, informational self-determination). And with respect
to the NGI administration organizations, we appreciate the reasonably fast
decisions and low administrative overheads.

WHAT IS UNIQUE ABOUT THE NGI COMMUNITY?

We appreciate that Libre Software is a respected core value that has no
boundaries for collaboration among NGI projects, and no one asks us to justify
business plans based on Libre Software licensing and support models.

HOW DO YOU SUPPORT WOMEN IN STEM?

The GNU Project encourages contributions from anyone who wishes to advance the
development of the GNU system, regardless of gender, race, ethnic group,
physical appearance, religion, cultural background, and any other demographic
characteristics, as well as personal political views. We do not have a special
treatment when it comes to gender, we welcome talented, enthusiastic and
motivated folks from all genders and parts of the world.

HOW HAS THE COMMUNITY USED THE TOOL FOR OPEN SOURCE SOFTWARE?

Operating GNU Taler, in general, is expected to require an e-money issuer
license. We are still adding required AML and KYC features that seem necessary
before anyone can legally use the payment system at scale. However, members of
the community have already successfully used the payment system to handle
payments for drinks at a conference and it is also in limited operation at the
BFH.

Taler Systems vending machine

COULD YOU EXPLAIN IN SIMPLE TERMS WHAT IS NEW AND ORIGINAL IN YOUR PROJECT?

GNU Taler offers one-sided privacy, where the person making a payment remains
anonymous to the other party and the payment system operators, while anyone
receiving payments can be easily identified by the operator. This prevents mass
surveillance in the private domain (where we spend money) while preventing
criminals from using the system to receive money for illegal business activities
or evading taxation.

WHAT PROBLEM DOES YOUR PROJECT SOLVE?

There is no privacy-preserving, usable, efficient and legal payment system for
the Internet.

PLEASE EXPLAIN A LITTLE ABOUT ANY MARKETING OR BUSINESS DEVELOPMENT INITIATIVES
AROUND THE PROJECT?

Taler Systems SA is a start-up dedicated to further developing and commercially
supporting the GNU Taler software.

TOWARDS THE END OF THE PROJECT, WHAT WAS THE EVOLUTION OF THE IDEA?

Initially, we focused on the protocols, then the user interfaces, and now we are
focusing more on community-requested features, performance and compliance.

WHERE DO YOU SEE YOURSELF IN 5/10 YEARS?

In 10 years, GNU Taler will either be the technology backing the Digital Euro,
or GNU Taler, will be the technology that made the Digital Euro project of the
European Central Bank obsolete, or we will be “enjoying” life without liberty
under a government in absolute control.

#christianGrothoffinnovatorsNext Generation InternetNGINGI InnovatorsNGI4euWho's
NGI
Next Generation Internet account
Apr 17, 2024

List of 41 new NGI0 awardees:
https://nlnet.nl/news/2024/20240417-announcing-projects.html
@NGIZero #NGI #opensource

📄
NLnet; 41 new projects awarded
0
7
5
NGI TALER account
Apr 4, 2024

🔦 The applications for NGI TALER's 1st Funding Call closed last Monday, April
1st, at 12:00 CET! We are extremely grateful about the energy & time that
applicants devoted in this funding opportunity!!

💯THANK YOU!

🎯 We have received 27 applications! We expect to announce results by end of
June.

🎉 Follow our social media & website, as well as the @EC_NGI for future open
calls!

🌐 Subscribe to the TALER Integration Community Hub (TALER ICH)
https://ich.taler.net/ created by @ps
#GoTALER


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NGI4ALL.E has received funding from the European Union’s Horizon Europe research
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