> ## Documentation Index
> Fetch the complete documentation index at: https://chainstack-docs-polygon-erigon-trace-deprecation.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Beacon Chain events

> Subscribe to Beacon Chain event streams via Server-Sent Events. Get real-time head updates, block notifications, and attestation data from the consensus layer.

<CardGroup>
  <Card title="Subscribe to events" href="/reference/subscribetobeaconevents" icon="angle-right" iconType="solid" horizontal />
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For developers and network participants, this is a valuable tool for monitoring the chain's progress and ensuring their systems are synchronized with the latest state of the network.