I really don't understand what you're saying, I don't know who that account is and where it came from. I am contacting Yahoo62278 about this issue, it is definitely a misunderstanding, I can provide any evidence to prove it. LOL I wish I had a legendary alt account and some positive trust. I don't know why it happened but I swear this is a misunderstanding. One fine day I woke up and find that I was living with the negative trust for a guy that I didn't know.
Well your story is one of a kind.. Let's wait and see how it pans out.By the time Yahoo tags you for cheating or trying to cheat in the bounty. There is more than enough evidence to prove his claim. It can never be a mistake or coincidence. I have seen him tag dozens of users in the past and no one has ever come out to appeal against the tags, automatically meaning they were guilty.
Now we have a unique story to watch, I believe there must be some reason for Yahoo62278 to make a decision. I have just checked your profile and LOL 
no reference link.
Yahoo62278 also doesn't share how he catches cheats so that future cheats can not know how to avoid getting caught... that's why there is always no reference in the tags no reference link.