GNU Taler is electronic money, not a currency. Neutral, every one can make its own currency. Transaction is secure (trust in the e-money) because of GNUnet; it

GNU Taler is electronic money, not a currency. Neutral, every one can make its own currency. Transaction is secure (trust in the e-money) because of GNUnet; it even addressed the Sybil attacks concerns. Trust on the currency comes from real life trust. A bank for the Euro. A human for a novel human-made currency. Then, Exchanges that trust 2 different currencies can buy/sell those currencies.