ChainCatcher news, Tether announced a grant of $100,000 to the BTCPay Server Foundation to support the development of free and open-source software (FOSS).It is reported that the BTCPay Server Foundation is dedicated to advancing financial privacy and freedom, and its open-source payment processing software allows thousands of merchants and businesses worldwide to customize and use it for free, accepting Bitcoin and Tether USD (USDt) payments (via the Liquid network).