Both files are security-related dumps from the Wii U hardware:
The files otp.bin and seeprom.bin are dumped from a physical Wii U console. They are essential for using an emulator (like Cemu) to play online or for hardware-level repairs like unbricking a console. otp.bin seeprom.bin
otp.bin often holds . Sharing your otp.bin publicly can allow attackers to clone your device's identity or bypass licensing checks. Treat these files as sensitive as your SSH private keys. Both files are security-related dumps from the Wii