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GNU Taler 0.0.0

From: Christian Grothoff
Subject: GNU Taler 0.0.0
Date: Fri, 3 Jun 2016 20:22:33 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.6.0

Dear all,

I'm happy to announce the release of GNU Taler 0.0.0.

GNU Taler is a free software electronic payment system providing
anonymity for customers. Payments can in principle be made in any
existing currency, or a bank can be launched to support new currencies.
Merchants are not anonymous, and--due to income-transparency--the state
can perform effective tax audits.

This is a first alpha release of the four key components providing logic
for running a bank, exchange, merchant and wallet.

What works:
* Exchange implements the full Taler protocol, but does not
  integrate with traditional banking systems (only with Taler's
  own "bank").
* Wallet can withdraw and spend coins, but does not yet handle
  refreshing, refunding, synchronizing, or export of
  cryptographic proofs.  Some error handling may be insufficient.
  The wallet was only tested with Chrome/Chromium.
* Merchant backend can generate contracts and handle payments,
  but does not yet offer full back-office support for tracking
  payments received.  Frontend examples are available in Python
  and PHP.
* The bank can manage accounts, allows the wallet to withdraw
  funds and can receive payments from the exchange.

Key open issues include:
* Wallet transactions are sometimes linkable because refresh is
  not implemented.
* There is no auditor, and hence components do not properly
  support auditors either. As a result, a dishonest exchange
  could embezzle funds.
* No integration with "real" banks, so only toy currencies are
  available for now.
* Documentation, testing, error handling and usability still
  need to be improved.

You can download GNU Taler from:
* All GNU FTP mirrors   
* Our Git repository is at      

Please report bugs to our bugtracker at

Documentation can be found at        
Additional documentation about the APIs is at
A demo is running at               

Happy hacking!

Christian & Florian & Gabor & Jeff & Marcello

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