Surely fungibility is very important to maintain into the future for bitcoin, but I doubt that fungibility summarizes my ONLY points.


I recall that there is some case law regarding attempts to mark dollars and to make recipients responsible for looking for blacklisted bills.

Ultimately and luckily, those kinds of responsibilities did not fall upon dollar recipients because it would have likely crippled the dollar's fungibility and devalued the dollar worse than it already is... hahahahhaha


Surely, there are some responsibilities on people not to accept counterfeit bills and things like that, and we are still learning in the crypto-space the extent to which fungibility is going to remain a value and built into the custom and practices.

When I buy bitcoins on local bitcoins, I do not make any meaningful attempt to figure out from where someone is getting their coins; however, if the behavior of someone is strange and they seem to have a lot of bitcoins that they are discarding for under market price, I worry about getting involved with them and taking their bitcoins (because I don't really want to be a target of any law enforcement efforts).

When I am selling bitcoins on local bitcoins, I make a simple disclaimer that I will not sell to persons who inform me directly or indirectly that they are purchasing bitcoins for any illegal or arguably illegal activities.

I am not sure whether I am completely protecting myself in regard to such practices, but ultimately, I am taking certain measures to attempt to protect myself and also assuming a considerable amount of fungibility remains in the bitcoin space (at least for the time being).