<s>
An	O
airdrop	B-Protocol
is	O
an	O
unsolicited	O
distribution	O
of	O
a	O
cryptocurrency	O
token	O
or	O
coin	O
,	O
usually	O
for	O
free	O
,	O
to	O
numerous	O
wallet	O
addresses	O
.	O
</s>
<s>
Airdrops	B-Protocol
are	O
often	O
associated	O
with	O
the	O
launch	O
of	O
a	O
new	O
cryptocurrency	O
or	O
a	O
DeFi	B-Protocol
protocol	O
,	O
primarily	O
as	O
a	O
way	O
of	O
gaining	O
attention	O
and	O
new	O
followers	O
,	O
resulting	O
in	O
a	O
larger	O
user	O
base	O
and	O
a	O
wider	O
disbursement	O
of	O
coins	O
.	O
</s>
<s>
Airdrops	B-Protocol
have	O
been	O
a	O
more	O
important	O
part	O
of	O
ICOs	O
since	O
crypto	O
entrepreneurs	O
have	O
started	O
doing	O
private	O
sales	O
instead	O
of	O
public	O
offerings	O
to	O
raise	O
initial	O
capital	O
.	O
</s>
<s>
One	O
example	O
of	O
this	O
is	O
by	O
the	O
company	O
Omise	O
,	O
which	O
gave	O
away	O
five	O
percent	O
of	O
its	O
OmiseGO	O
cryptocurrency	O
to	O
Ethereum	B-Application
holders	O
in	O
September	O
2017	O
.	O
</s>
<s>
Airdrops	B-Protocol
aim	O
to	O
take	O
advantage	O
of	O
the	O
network	O
effect	O
by	O
engaging	O
existing	O
holders	O
of	O
a	O
particular	O
blockchain-based	O
currency	O
,	O
such	O
as	O
Bitcoin	B-Protocol
or	O
Ethereum	B-Application
in	O
their	O
currency	O
or	O
project	O
.	O
</s>
<s>
A	O
dusting	B-Protocol
attack	I-Protocol
is	O
one	O
risk	O
of	O
crypto	O
airdrops	B-Protocol
.	O
</s>
