The ownership of any cryptocurrency boils down to who owns the private key or the seed phrase of the wallet. Unlike the other kind of crypto wallet that you shove into your back pocket or purse, a cryptocurrency wallet is an interface that allows you to access digital assets, interact with them, and manage the keys that you own. The moment someone else can access their private key and use it, they also become “0x71dA0b62…” and we will be none the wiser. There is also one other thing we both know: my friend’s existence is only as good as where their private key or seed phrase is stored and who can access it. We don’t communicate much, but I know they are always there whenever I need to transact value, and they know I will always be there for the same. But in the Hardened child key, it is not possible to reach on your master key.My online, best friend’s name starts with “0x71dA0b62.” before trailing off into something worthy of waking Cthulhu from his slumber. If you lost your child address private key and you created a child’s key using a normal public key so it might change then someone will get your master private key using a reverse algorithm and break your wallet and steal all the bitcoins that you have in your child addresses. ParentChildCode = "8ufdf8uw88fdh8sfdh8sf." parentPrivateKey = "94uhufhdsfd9sfhdfdsd." index = 2147483648 data = 0x00 + parentPrivateKey + index // add three parameters into data result = HMAC(data, parentChildCode) leftResult = result rightResult = result newChainCode = rightResult childPrivateKey = (leftResult + parentPrivateKey) % n childPrivateKey = childPrivateKey (64 bytes) //convert into HEX childPublicKey = ECDSA.encode(childPrivateKey) //get the public key the fact is that there is no parent public key used. The process is much similar to a normal child key. ![]() because we can not do anything without a private key. As Pieter: suggests it should be a default way of creating an address.The index number is the last split of possible children which is from 2147483648 to 4294967295.It is used for an internal or secret purposes. ![]()
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