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Seems like you have provided almost everything. Just need a screenshot where he gave you his telegram ID. Perhaps in like a personal message on bitcointalk and that's the last thing required for the make this scam accusation solid enough.
here is screenshot sending me pm here with his dicord username :
http://prntscr.com/q2wpw3 here from discord he took my id and talked to me on telegram with darkstar :
http://prntscr.com/q2ws3z darkstar also can confirm