# 3.4 课外阅读与思考

1. 关于 UTXO 的思考（Vitalik Buterin）：<https://ethfans.org/posts/thoughts-on-utxo>
2. 比特币和以太坊技术原理对比之账户模型：<https://www.jianshu.com/p/14bd783d2ced>
3. 狗狗币基本上无限接近于一种货币，光靠金钱可以做好慈善吗？如果不能，那么你认为应该怎么设计？

[![Gitter](https://badges.gitter.im/naturaldao/%E5%8C%BA%E5%9D%97%E9%93%BE%E6%A6%82%E8%AE%BA.svg)](https://gitter.im/naturaldao/区块链概论?utm_source=badge\&utm_medium=badge\&utm_campaign=pr-badge)


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