To save themself a headache in the future
Posting a Bitcoin wallet address (and a PGP public key) was one of the first things I did too.

then my beginning is right?

Please Quote:

----BITCOIN ADRESS ----

1LUPTw2cHPRT4P2z3k7DLraxPaSdb1LjnQ

-----BEGIN BITCOIN SIGNED MESSAGE-----

Today is 02.04.2018 bitcointalk account OlegUmatov (u=1992945) belongs to this address

-----BEGIN SIGNATURE-----

H0tn6YZyr+fNDOQJ8fa14K23VO8cPucSMNokKvQ6jnOEVbdKNm9IPEjRFdk7wjxArxGLgOwylnpgEjsIMbOR70w=

Proof: https://brainwalletx.github.io/#verify?vrAddr=1LUPTw2cHPRT4P2z3k7DLraxPaSdb1LjnQ&vrMsg=Today%20is%2003.04.2018%20bitcointalk%20account%20OlegUmatov%20(u%3D1992945)%20belongs%20to%20this%20address&vrSig=H%2BzZGd%2B0MtlPytuxQDGGzxShy7lDie4F7HJoNnP48crXRT0iTzXghq%2Fh1jl2KxagIRjVvNJ3%2BUMEk6tPXAlfXg4%3D