I still don't really get this. Do you mean that frent-ends have proprietary code?
Contracts on-chain can be slightly inscrutable in their bytecode format, but it's pretty uncommon for smart contracts to not be published with source code and a verifiable build.
> Do you mean that front-ends have proprietary code?
Yes, sorry for not being clear, but this is what I meant. When the average person uses crypto, they're not using an open source app to buy/sell it. They'll be doing it through a propriety service, with a non-open source front-end. That service will build on top of a lot of great open source tech yes, but the final layer is very likely a private company.
I know there are open source options, but my understanding is the overwhelming majority of human trades won't be using them. My point is, refusing to use pix because there's not an open source mobile app is odd to me.
Contracts on-chain can be slightly inscrutable in their bytecode format, but it's pretty uncommon for smart contracts to not be published with source code and a verifiable build.
Example, picked randomly from a transaction in a recent block: https://etherscan.io/address/0x388c818ca8b9251b393131c08a736...