The block in which the above post is included has a merkle root of 6f949ff54e6185dc8d8f1d7235fede66f7e37b89.
To find the winner we:

1. Convert the merkle root into base 10:
   6f949ff54e6185dc8d8f1d7235fede66f7e37b89 = 637012420177657916424951375475974751889905646473.
2. Compute the residual after dividing by the number of tickets: 637012420177657916424951375475974751889905646473 mod 686 = 107.
3. This is the winning ticket, held by @steem-raffle.

Congratulations!