I have created an auto-updated leaderboard page for this competition -
https://tiramisu77.github.io/bct-game-leaderboard/It takes the entries from the second post of this thread, calculated the delta - how close the prediction is to the current price, then sorts the whole list and displays it, with each predictions delta added as a second column.
This is really nice, here's what the Top 10 closest predictions looks like right now:
Current Bitcoin price: 7157.82
7187 29 Spray.
7080 78 aundroid *
7266 108 irsada
7000 158 Globb0 *
7375 217 dragonvslinux *
6890 268 morvillz7z
6820 338 Koal-84 *
7510 352 illyiller
6755 403 Heisenberg_Hunter *
6666 492 iwantapony