prevent assets with BIT prefix
prevent assets with BIT prefix

oxarbitrage/bitshares-core,bitshares/bitshares-2,bitshares/bitshares-2,oxarbitrage/bitshares-core,abitmore/bitshares-2,bitshares/bitshares-2,bitshares/bitshares-2,pmconrad/graphene,pmconrad/graphene,oxarbitrage/bitshares-core,abitmore/bitshares-2,oxarbitrage/bitshares-core,abitmore/bitshares-2,pmconrad/graphene,pmconrad/graphene,abitmore/bitshares-2