JaKu?

Links to everything:
a)link to the steam id website: https://steamid.io/
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1)link to the 1st match: https://play.eslgaming.com/counterstrike/csgo/csgo/open/5on5-open-cup-series-72-poland/match/33395759/

1)link to JaKu main account: https://steamcommunity.com/id/JakOnToZrobil/    [U:1:194514408]
2)link to JaKu 1st connected account: https://steamcommunity.com/profiles/76561198067908422    [U:1:107642694]

1)1st match date:  13/02/16
3)1st ban date: 1/07/14


g)youtube video with tutorial:
What i want to say is that this method confirms only that the player logged in on the account i checked. We will never know if he was the one that got those accounts banned or no. Only Valve know it.