FYI: Big fan of building your own blockchains (learn by doing), thus, I've started to collect starter blockchains (in 20 lines of JavaScript, Python, Ruby, ...) and articles (like BrewChain) over at the Awesome Blockchains page [1]. Anything missing? Contributions welcome. Happy blockchaining. [1]: https://github.com/openblockchains/awesome-blockchains