Recently for a Good Minds art drop, I needed to get a snapshot of all NFT holders at a specific block.
I did some research, and all I came across were some old holder count Dune dashboards, and a web app that gave incorrect results.
I wrote a Dune query that accomplishes this initially, but upon seeing that the pro tier (needed to save an output as .csv) was $390/mo, I wrote this code. For anyone interested, here's the query.
The code is fairly simple. It uses the web3 package as this allows you to specify a block number when calling a contract's methods.
For collections that have a totalSupply exposed, it'll use that to find the size of the collection, otherwise you'll need to provide it yourself.
Before running the code, check out the root README Getting Started's