Skip to main content Over 150 years ago, Western Union built the first transcontinental telegraph line — and now the financial services firm is launching its own stablecoin, enabling its customers to send and receive dollar-backed digital currencies using blockchain technology. According to The Wall Street Journal, the stablecoin — known as the U.S. Dollar Payment Token, or USDPT — will be built on the Solana blockchain and issued by Anchorage Digital Bank.