bitcoin

Understanding Bitcoin LevelDB Format (and messing up with bytes)

I’ve contributed to a small project I found useful in my digging of Bitcoin‘s LevelDB databases structure; leveldbctl is a CLI tool that permits to parse a LevelDB database rather simply. But it was missing a critical function for my use case, hexadecimal fields handling, which are heavily used by Bitcoin. Until now it was only capable of reading / writing strings. It is now possible to use it to retrieve values from Bitcoin's (and probably a lot more cryptocurrencies) block index keys, i.

proof-of-work based blockchain explained with golang

Yet another “blockchain explained” article, I know, I really thought about if releasing it or not, but you know, you only understand what you can explain clearly, so I hope I’ll be able to explain proof of work and blockchain as clearly as it is clear in my mind. The originality of this post is that I’ll try to make those concepts clear through pieces of code extensively explained so it doesn’t feel like a theoretical expose where you get the idea without the taste.