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 ## CryptoCurrency
 - [Blockchain demo](https://blockchaindemo.io/) : A visual demo of Blockchain technology
+- [Build a blockchain in Python](https://hackernoon.com/learn-blockchains-by-building-one-117428612f46) : Learn Blockchains by Building One
 - [Coin demo](https://coindemo.io/) : CryptoCurrency demo
 - [Lopp Bitcoin Resources](https://lopp.net/bitcoin.html) : Some Bitcoin Resources
 - [Blockchain Basics](https://www.sitepen.com/blog/2017/09/21/blockchain-basics/) : Great introduction to blockchain