[cyphar]

Bitcoin is technically non-fungible because the transaction history of a coin is public information (I imagine if someone got ahold of Satoshi's coins they would be worth more than regular Bitcoins -- even just in terms of sentimental value). But for most practical purposes it is basically fungible.

[jrochkind1]

Sure, good clarification. And fungibility can definitely be contextual, depending on context and requirements. Fungibility is really always about "enough people think it's fungible for their purposes and have agreed to treat it as fungible, so it is."