Found it…… https://www.walletofsatoshi.com/disclosure
8. USD-Denominated Stablecoins (USDB)
8.1 Nature of USDB
USDB is a US dollar-denominated stablecoin issued by Brale, a third party, on the Spark network. USDB is not issued, guaranteed, or backed by Wallet of Satoshi. USDB is not money, le...