Nah. the commenter above is just wrong. It’s just that anyone who isn’t selling bullshit uses their real name- Merkel trees - which are fundamental to modern software development (git, zfs, nix, nosql).
We define “blockchain” and “blockchain network”, and then discuss two very different, well known classes of blockchain networks: cryptocurrencies and Git repositories.
That’s a similar but different concept. Blockchain adds a way to determine consensus of the correct tree. While git is distributed, it’s generally not trustless, there’s generally a trusted version of the repository.
what? Git is very much distributed and while you can have a main branch, you can set as many up streams as you want and merge things sideways.
It’s trust less in the sense that commits can’t be easily forged and are signed with cryptographic keys and identities-- as in, I don’t have to trust that the source code is genuine since I can verify the commit history myself.
Consensus is just a pull request.
That wiki article literally lists Bitcoin and Ethereum as implementations of Merkel trees.