WHOLE CHARACTER
真zhēn
true; real (真正, 真心); really; indeed (真好); clear (看得真); a genuine portrait (写真)
真 is true — real facts, real feelings, and really so.
ZDIC marks 会意 without naming pieces; the modern form is shown as a top cross piece over the lower 具-shaped piece.
TOP CROSS PIECE (十)
十shí
ten
Described structurally in 早; no invented story.
In 真: top cross piece (十) The top stroke piece; no historical role is claimed.
LOWER PIECE (具)
具jù
tool; to have
A standalone character; in 真 it is the lower piece with no claimed role.
In 真: lower piece (具) Shown as the lower piece; 具's standalone meaning is not claimed here.