# Base58

> **最後更新：2026 年 1 月**

類似於[Base64](/gei-kai-fa-zhe-de-zhi-nan/cryptography/base64.md)，由[比特幣](/bi-te-bi/bi-te.md)創辦人[Satoshi Nakamoto](/cong-zhong-ben-cong-dao-bi-te-bi/satoshi-nakamoto.md)所提出，將原先的64的字元縮減成58個。

## 去除長得很像的字母或是數字

縮減的方式就是去除大寫"I"與小寫"l"這種基本上分辨不出來的字元，另外還有大寫"O"與數字"0"組合，以及"+"與"/"兩個無用符號也被去除。

留下的字元包含：

```
123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz
```

***

#### 相關條目

* [Coinbase Wallet](/qian-bao-lei-xing/untitled/coinbase-wallet.md)
* [Coinbase](/mai-mai-shu-wei-zi-chan-de-chang-suo/shang/coinbase.md)
* [Base64](/gei-kai-fa-zhe-de-zhi-nan/cryptography/base64.md)
* [哈希算法](/gei-kai-fa-zhe-de-zhi-nan/cryptography/hash.md)
* [SHA256](/gei-kai-fa-zhe-de-zhi-nan/cryptography/sha256.md)

#### 參考資料


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://www.0x1.academy/gei-kai-fa-zhe-de-zhi-nan/cryptography/base58.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.