Sir i follow your steps in every moments , in real scenario you actually perform as a BTC raiders. You just caught number of alt accounts. But i have tried to post against a certain groups , the members were higher than my level. There they blackmail me to give negative trust and so on. Thats why i have created this account to catch such activity. As a newbie nobody will believe me , i know. Thats why you guys are here to help me.
Any person can give you negative trust it does not matter. If they believe you deserve the negative trust then you have to live with that. You cannot remove your negative trust by doing anything and only the person who gave it can remove it.
Then again threatening to give negative trust is blackmail or not - I am not sure about this. If the person is a DT1 or 2 member and then it can lead to a red mark on your account under the "Trusted Feedback". If they are not DT then it wont matter because it will be under "Untrusted feedback". Again trust is something that is subjective and DT giving a blackmail negative trust is punishable - possibly by exclusion from the list of the person who added them.
But seriously speaking - does trust matter so much to you if you have to be busting alt accounts? Look at the amount of Untrusted feedback on The Pharmacist, actmyname, Lauda and Vod's profiles - they never got deterred by it.