<s>
Tornado	B-Protocol
Cash	I-Protocol
(	O
also	O
stylized	O
as	O
TornadoCash	B-Protocol
)	O
is	O
an	O
open	B-License
source	I-License
,	O
non-custodial	O
,	O
fully	O
decentralized	O
cryptocurrency	O
tumbler	O
that	O
runs	O
on	O
Ethereum	B-Application
Virtual	O
Machine-compatible	O
networks	O
.	O
</s>
<s>
The	O
project	O
is	O
governed	O
through	O
a	O
decentralized	B-Operating_System
autonomous	I-Operating_System
organization	I-Operating_System
(	O
DAO	O
)	O
and	O
using	O
the	O
$TORN	O
token	O
as	O
a	O
voting	O
system	O
for	O
protocol	O
updates	O
.	O
</s>
<s>
On	O
18	O
August	O
2022	O
,	O
Tornado	B-Protocol
Cash	I-Protocol
was	O
present	O
on	O
the	O
Ethereum	B-Application
(	O
ETH	O
)	O
,	O
Binance	O
Smart	O
Chain	O
,	O
Polygon	O
,	O
and	O
Optimism	O
networks	O
,	O
with	O
Ethereum	B-Application
being	O
the	O
most-used	O
one	O
,	O
having	O
had	O
over	O
US	O
$7.6	O
billion	O
in	O
ETH	O
go	O
through	O
the	O
mixer	O
.	O
</s>
<s>
Tornado	B-Protocol
Cash	I-Protocol
uses	O
multiple	O
smart	B-Application
contracts	I-Application
that	O
accept	O
different	O
quantities	O
of	O
ETH	O
and	O
ERC-20	O
deposits	O
.	O
</s>
<s>
Zero-knowledge	B-Protocol
proofs	I-Protocol
(	O
in	O
particular	O
zk-SNARKs	O
)	O
are	O
used	O
to	O
ensure	O
privacy	O
,	O
and	O
there	O
is	O
no	O
way	O
to	O
link	O
a	O
withdrawal	O
to	O
its	O
deposit	O
,	O
which	O
ensures	O
asset	O
confidentiality	O
.	O
</s>
<s>
On	O
8	O
August	O
2022	O
,	O
the	O
Office	O
of	O
Foreign	O
Assets	O
Control	O
of	O
the	O
U.S.	O
Department	O
of	O
the	O
Treasury	O
blacklisted	O
Tornado	B-Protocol
Cash	I-Protocol
,	O
making	O
it	O
illegal	O
for	O
United	O
States	O
citizens	O
,	O
residents	O
,	O
and	O
companies	O
to	O
receive	O
or	O
send	O
money	O
through	O
the	O
service	O
.	O
</s>
<s>
The	O
same	O
day	O
,	O
the	O
domain	O
used	O
by	O
the	O
project	O
was	O
taken	O
down	O
,	O
and	O
GitHub	B-Application
removed	O
the	O
Tornado	B-Protocol
Cash	I-Protocol
repository	O
and	O
suspended	O
the	O
developers	O
 '	O
accounts	O
.	O
</s>
<s>
Circle	O
,	O
the	O
company	O
behind	O
USD	B-Protocol
Coin	I-Protocol
,	O
froze	O
about	O
$	O
75,000	O
in	O
USDC	O
from	O
Ethereum	B-Application
addresses	O
belonging	O
to	O
the	O
mixer	O
.	O
</s>
<s>
On	O
10	O
August	O
2022	O
,	O
Tornado	B-Protocol
Cash	I-Protocol
developer	O
Alexey	B-Protocol
Pertsev	I-Protocol
was	O
arrested	O
in	O
Amsterdam	O
on	O
the	O
suspicion	O
of	O
"	O
involvement	O
in	O
concealing	O
criminal	O
financial	O
flows	O
and	O
facilitating	O
money	O
laundering	O
through	O
the	O
mixing	O
of	O
cryptocurrencies	O
through	O
the	O
decentralised	O
Ethereum	B-Application
mixing	O
service	O
Tornado	O
Cash.	O
"	O
</s>
