Whether or not the Internet Archive counts as a legally acceptable trustee service is being litigated in the court systems [1]. The link is a bit dated so unsure what the current situation is. There's also this discussion [2].

[1] https://www.mololamken.com/assets/htmldocuments/NLJ_5th%20Ci...

[2] https://www.nortonrosefulbright.com/en-au/knowledge/publicat...