Father passed away and left me his ledger.

Hey guys, father recently passed away and left me his ledger. I have full access to this and hold the seed phrase etc. I already have possession of everything and we are starting to go through probate. My understanding is because I have possession of the wallet and seed phrase, there is nothing left to do to “transfer” it to myself. He has no online accounts that hold bitcoin, it’s just the wallet.

So my question: Is there anything linking his ownership to the bitcoin and the ledger that would mean solicitors need to get involved? Couldn’t exactly find a concrete answer for this and the executor of the will seems to think it works like a bank account which is tied to identity. From my understanding the only way you could tie his identity to the wallet is a purchase receipt at a stretch. Any help is much appreciated!

I am based in Australia if that makes any difference.

Thanks guys!

Edit: He had in his original will (2020) that all bitcoin in his Swyftx account to go to me. He didn’t update that before he died but last year he transferred it all into the ledger and gave me all the details. My aunty (the executor) wants to put it all through properly so wants details on it for the solicitor. Solicitor doesnt seem to be up to date with how bitcoin works…