I just invested $400,000 into Bitcoin
proof: 1DDWEQM11uMUKiqpGEWvBT2at3CjCw3Vra
but thats over 600 coins received over a long time, not a over 600 coin hold.. so yea nice try
proof would be to sign a message using an address holding coin,
Yah prove it moriarty and sign the address.