<s>
Royal	B-Protocol
Mint	I-Protocol
Gold	I-Protocol
was	O
a	O
digital	O
gold	O
currency	O
and	O
a	O
cryptocurrency	O
backed	O
by	O
gold	O
reserves	O
in	O
the	O
UK	O
Royal	O
Mint	O
.	O
</s>
<s>
The	O
blockchain	O
used	O
is	O
the	O
Prova	B-Language
open-source	O
distributed	O
ledger	O
.	O
</s>
<s>
A	O
proof-of-stake	B-Protocol
algorithm	O
demonstrates	O
ownership	O
of	O
the	O
physical	O
gold	O
.	O
</s>
