<s>
Proof	B-Algorithm
of	I-Algorithm
authority	I-Algorithm
(	O
PoA	O
)	O
is	O
an	O
algorithm	O
used	O
with	O
blockchains	B-Application
that	O
delivers	O
comparatively	O
fast	O
transactions	O
through	O
a	O
consensus	O
mechanism	O
based	O
on	O
identity	O
as	O
a	O
stake	O
.	O
</s>
<s>
It	O
,	O
however	O
,	O
does	O
require	O
maintaining	O
the	O
computer	O
(	O
the	O
authority	O
node	B-Protocol
)	O
uncompromised	O
.	O
</s>
<s>
The	O
term	O
was	O
coined	O
by	O
Gavin	O
Wood	O
,	O
co-founder	O
of	O
Ethereum	B-Application
and	O
Parity	O
Technologies	O
.	O
</s>
<s>
This	O
is	O
considered	O
more	O
robust	O
than	O
PoS	O
(	O
proof-of-stake	B-Protocol
)	O
-	O
PoS	O
,	O
while	O
a	O
stake	O
between	O
two	O
parties	O
may	O
be	O
even	O
,	O
it	O
does	O
not	O
take	O
into	O
account	O
each	O
party	O
’s	O
total	O
holdings	O
.	O
</s>
<s>
On	O
the	O
other	O
hand	O
,	O
PoA	O
only	O
allows	O
non-consecutive	O
block	O
approval	O
from	O
any	O
one	O
validator	O
,	O
meaning	O
that	O
the	O
risk	O
of	O
serious	O
damage	O
is	O
centralized	O
to	O
the	O
authority	O
node	B-Protocol
.	O
</s>
