> For the complete documentation index, see [llms.txt](https://docs.usebrist.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.usebrist.com/fundamentals/on-chain-events.md).

# On-chain events

#### Event parsing

Brist parses each new block for transactions in which at least one of the following occurs: 

* A transfer of ETH
* A transfer of an ERC-20 token
* A transfer of an ERC-721 token (NFT)

Brist then enriches these transactions and passes them forward through each filter, before dispatching the filtered messages to the output channels.