This program, for example transforms the "z69JZ..." string into
5KZnsvrXDcP7JFD7GCuZvifrbcBtK4kAe8nHx6ibktgvPJxs4Lp
Notice how the first two characters changed to 5K ? That's what private keys start with. However, the answer I get doesn't transform into a valid private key since the checksum doesn't match. I'm posting my program in the hopes someone else has a better variation. I just want this thing over...
I was just going to post the exact same findings, except that at my end, I got the same key and it does convert to a public key. Namely, 1nchRAYGJofxyrkuhbL1CGYtD5x8Lowi5. It made my heart jump when I found it, but it is, alas, empty.