user81044: Assuming you know the hd key's private & public info, and you have a given address is there an easy way to know whether or not that address is derived from said hdkey?

user48884: Other than just deriving a ton of potential keys and checking whether they correspond to the address, no. There is no mathematical relation between keys in a HD keychain that allows you to determine whether they are in that keychain.

81044: <p>Assuming you know the hd key's private &amp; public info, and you have a given address is there an easy way to know whether or not that address is derived from said hdkey?</p>
 48884: <p>Other than just deriving a ton of potential keys and checking whether they correspond to the address, no. There is no mathematical relation between keys in a HD keychain that allows you to determine whether they are in that keychain.</p>
