To silent boot (black screen) without any text whatsoever, look at /boot/orangepiEnv.txt.

verbosity=1
bootlogo=true
console=serial
disp_mode=1920x1080p60
overlay_prefix=sun50i-h616
rootdev=UUID=551c3a76-a854-4201-b126-1cef2a294964
rootfstype=ext4
extraargs=console=tty3 consoleblank=1 loglevel=0 systemd.show_status=auto rd.udev.log_level=3 quiet
usbstoragequirks=0x2537:0x1066:u,0x2537:0x1068:u

The variables of note are: extraargs, bootlogo, and console.

Note this was tested on an Orange Pi Zero 2 with an Ubuntu server image provided by Orange Pi; Orangepizero2w_1.0.0_ubuntu_jammy_server_linux6.1.31.7z.

Preventing tty1 from starting

To prevent the tty console from starting, use systemctl mask getty@tty1.service.

Enjoy your dark boot!