There are two cryptocurrencies issued by Lighthouse Blockchain Technology GmbH: core LHT coin and USDX token. To explain the structure of USDX we need to speak about both.
LHT is a digital asset with a limited supply. Its price is volatile and depends on the demand for it. LHT is a coin that exists on autonomous Lighthouse Blockchain. Lighthouse Blockchain is built using tried-and-true BitShares protocol, but operates independently of any other platform. USDX is a token that is issued on top of Lighthouse Blockchain. Smart contract ensures each USDX token is collateralized with at least 200% worth of LHT coins according to LHT’s current market price.
LHT cryptocurrency is limited in supply: the maximum amount of LHT coins is one billion, i.e. 1,000,000,000 coins. The Lighthouse Blockchain is able to issue USDX tokens using those LHT as a collateral. That said, the issuance of USDX tokens is controlled by the price of LHT coin: the higher the price of LHT, the less LHT the blockchain needs to put as a collateral and the more USDX tokens can be issued