Heavy metal music has its own cryptocurrency, Metal Music Coin (MTLMC3). The creators of this altcoin have a very clear objective: to try to make it become a recognized cryptocurrency and thus be able to support the heavy metal scene, especially the most underground part, they do not seek to profit but to support less known heavy metal artists, a initiative that if materialized would be a notable boost in the heavy metal scene. This cryptocurrency is based on the scrypt algorithm and has its own blockchain. With a total of 2,500 million total coins, it can be mined and as a curious fact in its new version (v3) for each block mined 666 coins are obtained (satan always present in metal). Currently there are about 80 million coins in circulation, which do not represent a very notable part of the total, so they are already on the way to achieve their goal.