But what we don't see is like who owns it before, so the historical state is not well, I mean, like it's there, but it's not easily accessible. But we know it's, there are some transactions down in the blockchain that changed the state, but to compute back the state, like how was it? I know, like three months ago, basically we would need to redo all these transactions in an opposite way. So the blockchain is an event-sourcing system similar to Redux, if you probably know Redux. Now it is not so cool anymore, but yeah.
Cool, yeah, and I already touched a little bit on the problem that we don't have the so-called provenance, especially for NFT, so provenance actually, it's a term that comes from art and in art provenance means like when I buy, I don't know, like a very expensive image or a picture that I wanna hang in my villa that I don't have. Then I wanna know who owned it before and also like what's also part of the provenance is actually, is it not a fake one, is it the correct one? So when I see that one that was owned by this gallery or that like very famous collector, then, yeah, the chances are high that I don't have a fake one. And on the blockchain, yeah, the provenance kind of record it, but it's hard to get. So what we don't really have is this time machine. So, I mean, theoretically possible the data is there, but you need to understand, like that the Ethereum blockchain for example, when we run a full archive node that has like all the blocks stored since Ethereum started, we end up with a storage capacity of three terabytes currently roughly. But that's even like heavily compressed. So then to access that data, we need to uncompress and stuff, so that makes it slow. Plus, yeah, and you can think, you can see like there are always new blocks produce, so that probably doesn't get away, right? Like we always have, we always need to think about where to store that data and how to access that data. And then to really get the historical view, it gets a bit hard. So that's kind of one of the problems that we see with blockchain data.