The block in which the above post is included has a merkle root of 92c569f5dcf49b678531b4e30ef32f5ce74ef898.
To find the winner we:

1. Convert the merkle root into base 10:
   92c569f5dcf49b678531b4e30ef32f5ce74ef898 = 837915129797294065234117879538640040952018696344.
2. Compute the residual after dividing by the number of tickets: 837915129797294065234117879538640040952018696344 mod 857 = 689.
3. This is the winning ticket, held by @bethvalverde.

Congratulations!