Let me rephrase: you don't need a public permissionless blockchain to have an append-only ledger that allow you to audit transactions. If you're not using a pub

Let me rephrase: you don't need a public permissionless blockchain to have an append-only ledger that allow you to audit transactions. If you're not using a public permissionless blockchain, then there's nothing new that hasn't been around for decades. See also the paragraph about private blockchains in https://www.schneier.com/essays/archives/2019/02/theres_no_good_reaso.html https://www.schneier.com/essays/archives/2019/02/theres_no_g...