I am writing a webapp in PHP that needs to generate Bitcoin addresses from their mpk.
I wanted to do the same for P2SH-P2WSH addresses (starting with a 3, with a ypub mpk) to make use of SegWit, but I always get the same error, using the same method (using the 49' derivation path instead of 44'):
HD key magic bytes do not match network magic bytes.
I have checked and this library can generate P2SH-P2WSH addresses, but so far, I have only been able to generate them from the raw public key (following Bitwasp's examples).
So I was wondering, could I be pointed towards a method to generate the P2SH-P2WSH addresses from their ypub using PHP only?