[Mastercard, Citibank, and JPMorgan Chase cooperate to test shared ledger technology] Golden Finance reported that Mastercard is working with some of the largest banks in the United States to test shared ledger technology, which will allow the joint settlement of tokenized assets such as commercial bank currencies and treasury bills and investment-grade debt securities. Mastercard said in a statement that the regulated settlement network proof-of-concept will simulate US dollar transactions. The goal is to make cross-border and system transactions faster and easier, and reduce the chance of errors and fraud. Ledger technology may greatly change the way the financial world works today. Currently, commercial bank funds, wholesale central bank funds, and securities such as investment-grade debt reside in different systems. However, once these assets are transformed into tokens running on distributed ledgers, they can be settled on the same system.