Bulgaria and the euro a stable ERM-II member for a minimum of two years. While Bulgaria has not formally joined the exchange rate mechanism, the ±15% floating band permitted within ERM II is less restrictive than Bulgaria's current strict peg of 1.95583 BGN to 1 EUR. The lev has been pegged to the euro since its launch, and prior to that was pegged on par to the German Mark. While the currency board which pegs Bulgaria to the euro has been seen as beneficial to the country fulfilling criteria so quickly, the ECB has pressured Bulgaria to drop it as it did not know
Community currency have been written supporting the management of community currencies. In 1998, Richard Kay, a Senior Lecturer at Birmingham City University, wrote a "Multi-registry System" specification for routing and processing community currency transactions using an approach designed to be decentralized, with no single point of control or failure, using the Domain Name System for server discovery. Community currency A community currency is a type of complementary currency that is used by groups with a common bond, like members of a locality, or association, and designed to meet their needs. A community currency may be geography-based, making it a type of local