[RockyMcNuts]

Supply is not a number, it's a function relating the price someone bids, to the quantity the bidder could buy at that price.

For example, if 100 bitcoins that were previously unavailable at any price, become available for $600, then supply at $600 (and above) increases by 100. The supply curve shifts to the right.

http://www.investopedia.com/university/economics/economics3....

[baddox]

It is fairly common to use the phrase "the supply increased" to mean "the supply curve shifted to the right." It's an abuse of terminology in my opinion, but it's already extremely widespread.