On October 4th, the Deposit Trust and Clearing Corporation (DTCC) announced that it would delay the release of its blockchain derivatives trading system for several months. The official statement of the Central Securities Depository (CSD) is that the delay was to allow additional testing of the modified Trade Information Warehouse (TIW). A DTCC spokesperson said the project is going well. DLT and cloud development have been completed and DTCC will continue to conduct in-depth industry-wide testing with customers, suppliers and technology providers. However, in order to ensure that the technology is implemented in a prudent and safest manner, additional testing time has been allocated. But a person familiar with the technical testing process said that the uneasiness caused by the Brexit is also a factor in this delay.