[mrorbitman]

I get that it's statistically impossible to actually rob bitcoin using this site (by finding a "green" private key).

But can anyone explain why I am able to find so many "yellow" ones (empty wallets that have previously made transactions)?

I expected going in to _only_ find "red" (never used) wallets and was surprised to find that was very much not the case.

[jerry1979]

As far as I have found, the yellow ones appear on the first pages and last pages. The first key listed is this: 5HpHagT65TZzG1PH3CSu63k8DbpvD8s5ip4nEB3kEsreAnchuDf

That key might look large, but I believe it is actually the number 1 in WIF format. See here: https://learnmeabitcoin.com/technical/wif