[Taler] GNU Taler 0.3.0 released

[Christian Grothoff]

Dear all,

We are happy to announce the release of GNU Taler 0.3.0.

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 still an alpha release of the five key components providing
logic for running an auditor, 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 and refresh coins, but does not yet
  handle refunding, synchronizing, or export of cryptographic proofs.
  Some error handling may be insufficient.
  The wallet works for Chromium/Chrome, Firefox and Opera.
* Merchant backend can generate contracts and handle payments,
  and has basic 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.
* The auditor can verify the cryptographic proofs collected by the
  payment service provider and calculate the expected balances.
  It does not yet check with the bank to make sure that the wire
  transfers match its calculations.

Key open issues include:
* No integration with "real" banks, so only toy currencies are
  available for now.
* Documentation, testing, error handling and performance still
  need to be improved.


You can download GNU Taler from:
* All GNU FTP mirrors             ftp://ftpmirror.gnu.org/gnu/taler/
* Our Git repository is at                https://www.git.taler.net/

Please report bugs to our bugtracker at     https://gnunet.org/bugs/

Documentation can be found at                  http://www.taler.net/
Additional documentation about the APIs is at https://api.taler.net/
A demo is running at                         https://demo.taler.net/


Happy hacking!

Christian & Florian & Gabor & Jeff & Marcello

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