[oska]

> Fungibility is just a social convention

No, the fungibility of money is law, established by legal precedent. Specifically the case of Crawfurd v The Royal Bank (1749).

> On 30 July 1748, an Edinburgh lawyer named Hew Crawfurd mailed two £20 notes to the merchant William Lang in Glasgow, but the letter was lost. Prior to sending them, Crawfurd had meticulously signed his name on the banknotes and recorded their serial numbers, so he notified the Bank of Scotland and advertised his predicament in several newspapers. One of the notes was never found, but the other note turned up at the Royal Bank of Scotland. Crawfurd requested the Royal Bank to open a multiplepoinding action with respect to the note, but the Bank refused. Thus he brought suit in the Court of Sessions against the Royal Bank.

> Both banks were alarmed by his action, as an adverse finding would subject banknotes to infirmities of title like any other property, which would threaten the idea of paper money as a common circulating currency. Despite their generally poor relations with each other at the time, they agreed to cooperate and jointly defend the case.

https://en.wikipedia.org/wiki/Crawfurd_v_The_Royal_Bank

[vintermann]

> No, the fungibility of money is law, established by legal precedent.

Laws ARE a kind of social convention. And to the degree that the fungibility of "money" is law, law also decides what counts as "money", and there's no reason why they (yes, they, not it - law is actually people) should let your crypto-token of choice count as money for legal fungibility purposes.