I stumbled on the Franko website, a bitcoin clone cryptocurrency (actually, it’s a litecoin clone).
If you read the introduction, the concept is explained very well:
- There are 11,235,813 Frankos
- Everyday 720 new coins are released
- The mathematical equivalent to find a needle in an haystack
- More people searching for the needle = the bigger the haystack has to be = the algorithm is more difficult to solve
If you get at the end of the introduction you can get 0.001 Franko for free (it’s less than a cent of a dollar)