The block in which the above post is included has a merkle root of 8e84cc61bbaad5e94d69dcce46197ef6fcaaac12.
To find the winner we:

1. Convert the merkle root into base 10:
   8e84cc61bbaad5e94d69dcce46197ef6fcaaac12 = 813638191986363589432231970934401148355043044370.
2. Compute the residual after dividing by the number of tickets: 813638191986363589432231970934401148355043044370 mod 873 = 200.
3. This is the winning ticket, held by @curatorbot.

Congratulations!