NFT Snapshot

A script to scrape owners of a given NFT. Helpful for snapshots for airdrops, white lists, etc.

How To Use

1. Install dependencies (ethers and csv-writer) with npm install.
2. Create a file in the root of the project named .env
3. Open .env, and create the following contents. Make sure all of the settings are appropriate.

• PROVIDER_ENDPOINT: A URL from Infura or Alchemy to create a JSON RPC provider.
• CHAIN_ID: The ID for the chain the NFT lives on (defaults to Ethereum Mainnet, ID: 1).
• OPENSEA_TOKEN: Your OpenSea token

Example File:

PROVIDER_ENDPOINT="https://..."
CHAIN_ID=1
OPENSEA_TOKEN=abcdefg

You can optionally provide these in the command line (export PROVIDER_ENDPOINT="https://...")

4. Optionally install the package globally on your system with npm i -g ./
5. Use example scripts below to run the script

Example Scripts

To query a self-custody collection (a typical NFT collection underneath a known ERC 721 address):

nftsnap erc721 -n collectionname -a yourtokenaddress

To query a self-custody 1155 collection (a multi-issue NFT with multiple owners per NFT): NOTE: This requires a Moralis API Key

nftsnap erc1155 -n collectionname -a yourtokenaddress

To query an OpenSea shared storefront collection. More info from OpenSea on collection slugs: NOTE: This requires an Opensea API Key

nftsnap opensea --slug your-collection-slug

Formats

There are three options for output formats for the data:

• json: Like ownerByTokenId, but stored in a json object
• tokensByOwner: Lists each owner, the count of the number of NFTs they own, and the specific IDs they own.
• ownerByTokenId: Lists all token IDs in order and the owner associated with each.

Automation

You can run an automated snapshot by creating an automate.json file in the root of the project with the following schema. This only supports json at the moment.

{
    "combine": false, [optional, default=true. if false, creates a separate json file for each collection]
    "exclude": [optional]
    [
        "excluded-collection-name" 
    ],
    "collections": [
        {
            "type": "openSea",
            "name": "opensea-collection-slug"
        },
        {
            "type": "erc721",
            "name": "721-collection-name",
            "address": "0xAABBCC...",
            "startId": 0, [optional, default=1] 
            "endId": 1999  [optional, default=20000, the script will automatically stop when it hits a failed fetch.] 
        },
        {
            "type": "erc1155",
            "name": "1155-collection-name",
            "address": "0x518Dd6f7fAb52280deF1eDf40e5500D37Ec70c41",
            "startId": 0, [optional, default=1] 
            "endId": 1999  [optional, default=20000, the script will automatically stop when it hits a failed fetch.]
        },
    ]
}

You can then run the script with

nftsnap automate