I thought you would use the block hash itself. that is a lot more random. as when there is a cut off time it is rather easy to guess the block number within a dozen or so - as long as hash rate/diff has remained steady.
I considered using the block hash, however doing so would result in there either being too few spots (if I only used the last digit), or way too many spots (if I used the last two digits).
Each spot can be guessed by only one person, so while you might be able to correctly guess the block number two hours out, there isn't a guarantee that spot will be unoccupied two hours prior to the cutoff time.
bc1qztj3uf3t7mzee3gla09yqnh36sdh04c52ul8ys
Sent --
7de445730482f6e42422290f28610c49d103bf12e4c851c50ef07f8946e2007fOnce bullrun2020bro responds to my PM and/or posts his address in this thread, I will send his prize.
Thank you to everyone who participated. I hope you all had as much fun as I did. I may host another giveaway sometime in the future.