In the upcoming guide, we will attempt to build a Substream that tracks ERC721 holder count for a given contract.
You can find the accompanying repository here:

Developer Guide

We have broken down the guide into a few steps:
  1. 1.
    Installation: Install all the dependencies and setup your environment to create your first Substreams
  2. 2.
    Creating Your Manifest: Setup your first substreams.yaml which gives you a high-level overview of the file
  3. 3.
    Creating Protobuf Schemas: Write your first Protobuf schema that will be used in your handlers
  4. 4.
    Writing Module Handlers: Write your first module handler
  5. 5.
    Running your Substreams: Run your newly written Substreams
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