All the solutions we suggest have difficulties.. but for solve this is realy simple if the producers or game admins made a rule for multi acc exploit like use many accs for block in pvp they will got ban, and start to banned all the accs used for block and main acc.. if 10 players got banned this type of thing will stop... so how to prove it i think if we are able to see what happen a player with 10 camps of you, like how to see who and how is attacking him and share the replay just need a few reports to prove the abuse existence or not