How to: Cryptocurrencies and Blockchains
* [Blockchain Lite](https://github.com/openblockchains/blockchain.lite.rb) - Build your own blockchains with crypto hashes; revolutionize the world with blockchains, blockchains, blockchains one block at a time.
* [Ciri](https://github.com/ciri-ethereum/ciri) - Ruby implementation of Ethereum.
* [MoneyTree](https://github.com/GemHQ/money-tree) - A Ruby implementation of Bitcoin HD Wallets (Hierarchical Deterministic) BIP32.
* [Peatio](https://github.com/rubykube/peatio) - Most Advanced Cryptocurrency open-source assets exchange.