Auditing is a core feature of most modern RDBMS systems. Anyways the reason why it's immutable is that it's public so everyone knows every transaction. You can

Auditing is a core feature of most modern RDBMS systems. Anyways the reason why it's immutable is that it's public so everyone knows every transaction. You can just have a normal db and maker it public. Blockchain is overkill in this case. Also this is a much more niche problem than "supply chains"