It's possible to create a derived key pair, called a child key pair, by
simply adding the same value to both sides of the equation:
////
[latexmath]
++++
\begin{equation}
K + (123 \times G) =\!\!\!= (k + 123) \times G
\end{equation}
++++
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<div data-type="equation">
<math xmlns="http://www.w3.org/1998/Math/MathML" alttext="upper K plus left-parenthesis 123 times upper G right-parenthesis equals equals left-parenthesis k plus 123 right-parenthesis times upper G" display="block">