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  - Understanding gas, Gwei, and cost saving strategies
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  - Staking Contract Troubleshooting - Not Owned or Approved
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How to
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  - How to get all tokenIDs in an NFT contract
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  - How to find the contract address from your transaction hash after deploying a contract
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Troubleshooting Errors
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  - Execution reverted: !CONDITION
  - Execution Reverted: Not within the sale window
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  - Execution Reverted: !Amt Error
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- Block Explorers (i.e. Etherscan)
  - Token verification on Etherscan
  - Blockscout API contract verification
Payments
More

Take a Snapshot of Existing Holders

Here’s how you can take a snapshot of wallet addresses holding your NFT

Last updated on December 12, 2022

Using this repo, you can take a snapshot of all the holders of a given NFT collection. This is frequently used ahead of airdropping NFT rewards.

After downloading the repo locally, you can make adjustments to you index.ts file as needed:

Replace demo with your Alchemy API Key

Replace NETWORK.ETH_MAINNET on alchemySettings with the Chain you're using.

Replace ethereum on thirdweb SDK initialization with the Chain you're using. (Example: "polygon", "avalanche", "fantom" )

Replace the erc const with either erc1155 or erc721, depending on your needs.

Replace contractAddress, network and tokenId (in case of erc1155) with the contract address to take a snapshot of.

Run with npx ts-node index.ts

Underlined variables from the repo below are where you make updates (as needed):

Can’t get this working? If you’ve followed the above and still have issues, contact our support team for help.

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How to close Auction Listings in a Marketplace openPack Function out of gas