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Can we please clarify if there is any difference (because apparently some technical documentation explicitly requests to include apostrophes) between a derivation from extended private key (xprv) or public key (xpub) of a child subkey, where m = root (xprv or xpub).
m/44/0/0/0 and m/44'/0'/0'/0
What are the meaning of the apostrophes and how / when should they be applied? Do they change anything in a derivation path -- will the derived child subkey be different with or without them?
The apostrophes show whether or not that particular derivation is hardened.
The difference been hardened and non-hardened keys is described in BIP32.
See the wiki for some further detail. https://bitcoin.org/en/glossary/hardened-extended-key
