Windows 2000 build 1947

Windows 2000 build 1947 is a build featured in Windows 2000 - The Daily Cycle (located at https://www.youtube.com/watch?v=DDqODDYR4Xk). It appears to be the build undergoing the testing cycle. There are also references to builds 1841, 1877, 1945, and 1946, as well as the NT 4.0 RTM in the video.