How it works

1. Pick a coin and a round: the next clock hour, or the next UTC day.
2. Draw where the price goes. Redraw as often as you like until the lock.
3. After the lock the real chart traces over your line, with the crowd's mean line behind it.
4. When the round ends: your score out of 100 and your place among every drawing of the round.

The score, the rules and the limits