Oh well. Just had another pointless argument about cryptocurrency and legal tender with someone in another context. The argument was pointless for a couple of reasons…
First of all, the argument was stupid because the person I was arguing with didn’t know what “legal tender” means anyway and, as I’ve already pointed out, it doesn’t mean what a lot of people think it means. Let’s just have a quick legal tender recap, using the United States as the case study. Section 31 U.S.C. 5103 “Legal tender” states that “United States coins and currency [including Federal reserve notes and circulating notes of Federal reserve banks and national banks] are legal tender for all debts, public charges, taxes, and dues”. Here is chapter and verse from The Man commenting on what that means: “This statute means that all United States money as identified above is a valid and legal offer of payment for debts when tendered to a creditor. There is, however, no Federal statute mandating that a private business, a person, or an organization must accept currency or coins as payment for goods or services. Private businesses are free to develop their own policies on whether to accept cash unless there is a state law which says otherwise”.
TL:DR; The Man says no-one can force you to take dollar, dollar bills.
Secondly, the argument was stupid because the person I was arguing with hadn’t bothered to fact-check the story that they were arguing with me about in the first place. It was to do with this story, supposedly noting Bitcoin’s status in Japan saying that “in Japan bitcoin core (BTC) is ruled legal tender and is already used to buy everything from airline tickets to sushi”. This is, as you may suspect, is completely false because in Japan the Virtual Currency Act defines Bitcoin (and other virtual currencies) as a form of payment method and not as any kind of legally-recognized currency or legal tender.
TL:DR; Bitcoin is not legal tender in Japan, nor anywhere else for that matter.
Nor, I strongly suspect, will it ever be. So let’s put that to bed and ask the more interesting question as to whether a central bank digital currency (e$, for short) would be legal tender. Here, I think the answer is unequivocal: yes, and in unlimited amounts, because there is no credit risk attached. A transfer of e$ is full and final settlement in central bank money and in time Section 31 U.S.C. 5013 will undoubtedly be extended to say so.