ku <ext_pri_key> -s 1/4/6/2/8/4/2/5.......
How many levels deep into the tree would I need to go (using only single digits) before it would be infeasible for an attacker to find it using a systematic search.
Twenty levels deep I thought would be adequate:
10**20 = 100000000000000000000
I know there are more effictive ways to obscure your address but I'm interested in this particular use case.