What's the S stand for?
June 30, 2019. Rapid fire hints, one every 30 minutes. The answer is three capital letters with an S. The TOMI field starts with two more sets of three, then a word. Digits 2d7 and ee.
The hints go to Hal Finney's posts on Bitcointalk, number 4 on that list. Then IBM and BITcoin. Then Imperfect anagram HAL.
HAL to IBM
The answer is HAS and the TOMI field is HAL BIT Caesar. Shift HAL one letter to the right and you get IBM, like the computer in 2001. HAS is almost HAL, and Hal once asked what that S stands for. Nobody knows. Maybe $, the author guesses.
u/silver_anth got it with a script, three capital letters at a time. And then asked how anyone was meant to get this. Fair question, no? "There is not much logic in this block", the author admitted.
The claim confirmed at 06:48:05 UTC, under three hours after the post. The block was also a hint for block 53. And for block 76, later. Everything is Hal here.