Why you think no one didn't show up for years and now he moved some coins to raise the reward ?
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they are sitting there only to control the security level.
He didn't show up to add more funds because there wasn't any serious people involved in the hunt, after asking him for a couple of month to add more funds in order to make it worth while, he nicely did so.
About someone sitting some where to control the security, I can think of 3 possible scenarios,
1- he is trying to show off, and test the skills of community members to see if some one can find a quick way to collect the coins or not, so it is an evaluation test for safety and reassurance for the world.
2- he already knows that there are some shortcuts to find the keys, by doing this he is trying to determine whether other people know about them or not.
3- he enjoys boasting and torturing us. 🤣
If the calculations of WP, are correct then solving 125 will require the same amount of work as solving 66, therefore no one will try addresses with no known public keys, note that solving 130 would require the same amount of work as brute forcing #68 I think?
So yeah.
Ps, I was thinking about 1000
BTC in a single exposed public key in a high range, that would be a real safety check.Once again, there are many talented people lurking around these woods which are honest and not thieves, but if there is a very large incentive they could work 24/7 to eventually find a solution, without that large incentive, they won't spend all their time trying to steal coins from other people.
I would love to participate in such a big and difficult challenge personally.😉