> For the complete documentation index, see [llms.txt](https://870167019.gitbook.io/blockchainspider/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://870167019.gitbook.io/blockchainspider/label-spiders/overview.md).

# Overview

The label spiders aim at collecting the labels of addresses or transactions in the blockchain. The data sources that BlockchainSpider collects include:

* **CryptoScamsDB**: an open-source dataset tracks malicious URLs and their associated addresses to make this entire ecosystem safer.
* **LabelCloud**: an online label database maintained by Etherscan.
* **OFAC**: the Office of Foreign Assets Control (OFAC), which publishes a Specially Designated Nationals (SDN) list containing information of several entities in the blockchain.
* **Tor**: a network solution for anonymizing communications on the internet.

**Note**: Please indicate the source when using crawling labels.