A project (well, technically two) to learn blockchain technology, that I first made in Go, and then remade in Rust.

Common features:

• Blockchain itself
• Wallet implemented over said blockchain
• PKCS transaction signing & verification
• Mining blocks based on hash prefix difficulty

I didn't know Go in beforehand, but development using it progressed far quicker than with Rust, but ultimately I was bored by it by day two. Go has a notoriously low skill ceiling, and after around 10 hours of coding it was painful to write yet another if err != nil. The only part where Go implementation is more advanced than Rusts is that it has a REST server, that lets you mine blocks and announce them to the network.

On the other hand, programming in Rust proved to be much more interesting and challenging. While I had some previous language knowledge, it still took me around a day to get up to speed. Rust chain, while packing the same features, also included chain forking, which preferred the longest chain and eventually discarded those that were falling behind. Rust implementation was also much more memory efficient and faster (partially because Rust itself is faster, and partially because I've learned many things about blockchain that I didn't know when I was developing in Go).