<s>
PlusToken	B-Protocol
was	O
a	O
ponzi	O
scheme	O
that	O
operated	O
worldwide	O
but	O
mainly	O
had	O
investors	O
in	O
China	O
and	O
South	O
Korea	O
.	O
</s>
<s>
PlusToken	B-Protocol
started	O
in	O
April	O
2018	O
.	O
</s>
<s>
It	O
offered	O
monthly	O
payments	O
to	O
users	O
of	O
its	O
cryptocurrency	B-Protocol
wallet	I-Protocol
.	O
</s>
<s>
The	O
total	O
amount	O
of	O
cryptocurrency	O
taken	O
by	O
PlusToken	B-Protocol
was	O
estimated	O
to	O
be	O
worth	O
(	O
based	O
on	O
2019	O
prices	O
)	O
between	O
$2	O
and	O
US	O
$2.9	O
billion	O
.	O
</s>
<s>
The	O
selling	O
of	O
cryptocurrencies	O
from	O
PlusToken	B-Protocol
was	O
speculated	O
to	O
have	O
been	O
the	O
cause	O
of	O
price	O
drops	O
in	O
bitcoin	B-Protocol
.	O
</s>
<s>
In	O
July	O
2020	O
,	O
China	O
's	O
Ministry	O
of	O
Public	O
Security	O
announced	O
that	O
27	O
"	O
major	O
criminal	O
suspects	O
"	O
and	O
82	O
"	O
key	O
"	O
members	O
of	O
PlusToken	B-Protocol
have	O
been	O
arrested	O
.	O
</s>
