During the build setup, developers place their legally owned baserom.us.z64 file into the root directory of the project. The build scripts then execute the following steps:
A legitimate, clean byteswapped N64 ROM suitable for the baseromusz64 designation will exactly match these values: EC6B032B546D12AA2E245EEA7709FB21C5F2B56E MD5 Hash: D435307BCF4B84D37A7CE00F97274070 baseromusz64 link