The modern and recommended approach is to use a native 64-bit Sentemul, but to rely on alternative, actively maintained emulators like MultiKey . In fact, many users searching for "sentemul 64 bit" are ultimately redirected to MultiKey, which is designed specifically for 64-bit systems and can emulate the same dongles, often with better stability and support for modern protections.

(often associated with Sentemul 2010 or Sentemul 2007 ) is a legacy software emulator used to create virtual dongles for applications protected by Sentinel hardware keys. Key Details for 64-Bit Systems

It is specifically optimized for analyzing modern 64-bit architectures (x86-64, ARMv8-A) and can intercept, modify, and replay execution flows across user-mode and kernel-mode components.

This is by far the most common technical reference to "Sentemul," especially in the context of "64-bit."