I am making an attempt to think about circumstances of utilizing derived unhardened youngster keys. My understanding is that any such key inside a tree might be created with out the grasp prolonged non-public key i.e. might be created with a baby prolonged public key. I additionally see that the prolonged public key might trigger safety points to the HD tree at massive ought to one other youngster non-public key be uncovered as effectively (grasp prolonged non-public key not compromised on this situation).
No matter particular use-case, is the proprietor of unhardened youngster keys making an attempt to publicly show a relationship?
If for one thing extra easy like inner group, what benefit does a sub-tree of an prolonged public key present over assigning roles to hardened youngster keys?