iso?

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/major/go4csgo-poland/cup-29/match/35249653/
2) link to iso main account: https://steamcommunity.com/id/isowsky/        [U:1:74615638]
3) link to 1st iso connected account: https://steamcommunity.com/profiles/76561198297588498   [U:1:337322770]
4) 1st match date:  18/08/17
5) 1st ban date: 24/06/17



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.