This is the extended public key. ...
How would the real extended public key become known? I don't see a feasible way.
Yes, I know it is zpub. I know it uses BIP84 key derivation for P2PKH addresses. I know it contains 024ee2be2d4e9f92d2f5a4a03058617dc45befe22938feed5b7a6b7282dd74cbdd public key, double SHA-256 checksum, equal to 0xb968b15d, and some other information, which you can see in hex. However, the chain code, and some other information is still missing.
Why zpub and why BIP84 key derivation? To my knowledge BIP84 derivation is for P2WPKH, ie. native Segwit addresses which aren't used in this puzzle.
So what's the purpose of a half-baked extended public key when it's incomplete? I don't get the picture...