I’m generating multiple children using one extended key. I have no problem generating public addresses:
$master = HierarchicalKeyFactory::fromExtended(myKey);
$key = $master->deriveChild(1);
$publicAddress = $key->getPublicKey()->getAddress()->getAddress();
In order to sign a transaction, I need the public address’ private key. How do I generate / extract the private key of a derived child? I’m assuming I’m not using the extended key for that.
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