Except this block didn't include the 12.5 BTC mining reward. I wonder...
What block number was it? I hate clicking links posted here.
Apparently it's meant to be a rootstock commitment, but whoever mined it didn't add the output which pays the reward to themselves.
https://www.reddit.com/r/Bitcoin/comments/7n1ie5/someone_destroyed_125_newly_mined_bitcoins/