The block in which the above post is included has a merkle root of e9329de13d1377b0c3b7cc7e05ffe820c069b8b9.
To find the winner we:

1. Convert the merkle root into base 10:
   e9329de13d1377b0c3b7cc7e05ffe820c069b8b9 = 1331323640135488972867940351711084974805762029753.
2. Compute the residual after dividing by the number of tickets: 1331323640135488972867940351711084974805762029753 mod 851 = 138.
3. This is the winning ticket, held by @votum.

Congratulations!