A tamper-evident audit ledger is an append-only record of every action a system takes, in which each entry is cryptographically linked (hash-chained) to the previous one, so that any later alteration of the history is detectable. Unlike an ordinary activity log, entries cannot be silently edited or deleted — by the user or the vendor.
The plain-English version: a diary where changing yesterday's page visibly breaks the book.
Why it matters: landlord disputes are decided on records. An editable log is contestable evidence; a hash-chained one is designed for the standards records face when tested — including the federal rules for self-authenticating electronic records (FRE 902(13)-(14)). Aptoria's ledger is hash-chained for exactly this reason. This is general education, not legal advice.
This is general educational information, not legal or tax advice. Rules vary by state and locality and change over time — check your local law and confirm specifics with a qualified professional.