So basically, via these coloured coins which is just a way of saying, external institutions can actually program specific Bitcoins to be used as tokens only for certain use.

Then why are there all these altcoins? If Bitcoin can be used as a general currency and also as a specialised currency that only works in a special situation that you want? Like I am issuing Bitcoins for charity. I can program them so that they can only be used by the charity and nowhere else? Something like that?

 Hey guys, I am curious about this programmable nature of Bitcoin that i am seeing at minute 3:00 in this video: https://www.youtube.com/watch?v=YIVAluSL9SU

From what they said there, you could program every single Satoshi to act as a token that could only be spent only where you want it to spend. For example programming Bitcoin to be available just for healthcare, or programming them to come back to you if your receiver doesn't spend them or a ton of other things. It sounded amazing but I am never seeing or hearing about this aspect of Bitcoin elsewhere. Is it some kind of Bitcoin functionality that was lost along the way or what exactly?

PS: I did this exact thread in the general discussion but i thought that it fits better here actually. Sorry for my double posts.

 Hey guys, I am curious about this programmable nature of Bitcoin that i am seeing at minute 3:00 in this video: https://www.youtube.com/watch?v=YIVAluSL9SU

From what they said there, you could program every single Satoshi to act as a token that could only be spent only where you want it to spend. For example programming Bitcoin to be available just for healthcare, or programming them to come back to you if your receiver doesn't spend them or a ton of other things. It sounded amazing but I am never seeing or hearing about this aspect of Bitcoin elsewhere. Is it some kind of Bitcoin functionality that was lost along the way or what exactly?