> For the complete documentation index, see [llms.txt](https://u.naturaldao.io/be/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://u.naturaldao.io/be/chapter2.md).

# 第二章 区块链钱包

- [2.1 钱包及账户里的秘密](https://u.naturaldao.io/be/chapter2/2.1-qian-bao-ji-zhang-hu.md): 钱包是区块链的入口，你还不下载一个？
- [2.2 签名与多重签名](https://u.naturaldao.io/be/chapter2/2.4-qian-ming-yu-duo-chong-qian-ming.md)
- [2.3 交易与Gas](https://u.naturaldao.io/be/chapter2/2.5-jiao-yi-shou-xu-fei.md): 天下没有免费的交易
- [2.4 双重支付（双花）](https://u.naturaldao.io/be/chapter2/2.6-shuang-chong-zhi-fu-shuang-hua.md)
- [2.5 电脑钱包安装](https://u.naturaldao.io/be/chapter2/2.2-dian-nao-qian-bao-an-zhuang.md)
- [2.6 手机钱包安装](https://u.naturaldao.io/be/chapter2/2.1-shou-ji-qian-bao-an-zhuang.md): 区块链钱包其实就是你的私人银行
- [2.7 钱包的数据存储方式与特色](https://u.naturaldao.io/be/chapter2/2.7-qian-bao-de-shu-ju-cun-chu-fang-shi-yu-te-se.md)
- [2.8 钱包的安全性](https://u.naturaldao.io/be/chapter2/2.8-qian-bao-de-an-quan-xing.md)
- [2.9 讨论与练习](https://u.naturaldao.io/be/chapter2/2.9-tao-lun-yu-lian-xi.md)