The block in which the above post is included has a merkle root of 5d1108bafafe0593ee986849195193ac51e5c702.
To find the winner we:

1. Convert the merkle root into base 10:
   5d1108bafafe0593ee986849195193ac51e5c702 = 531316014879425753204342268860140960082425136898.
2. Compute the residual after dividing by the number of tickets: 531316014879425753204342268860140960082425136898 mod 622 = 344.
3. This is the winning ticket, held by @skepticology.

Congratulations!