exist any lisp to introduce any description on any type of block ?

[jtm2020hyo]

I'm seeking for a lisp to introduce my personal mark to my work

for example, my nickname inside all my drawing blocks or anywhere I can introduce inside the block, like renaming.

[Sea-Haven]

Like this

[jtm2020hyo]

Yes

I want introduce my Autodesk nickname everywhere inside my drawings.

I'm searching for all possible alternatives.

My first idea it's add my nickname to the block description,(this block was created by jtm2019hyo and for jtm2019hyo) 

[Sea-Haven]

Sounds like you have answered your own question.

[jtm2020hyo]

well, just partially.
I used rename command for introducing my initials. (but I'm too lazy, I need lisp)

but I do not have any way to introduce any description in all blocks (preferably selected blocks).