Opensea ERC-1155 proof of ownership

Question

I'm creating a web3.0 project where I need to know if the user has a specific token in their wallet to provide access to content.

The collection was created in opensea, was lazy minted, and the contract is ERC-1155 provided by opensea.

My question is, based on Opensea is the owner of the contract, how can I determine if the asset hold for the customer is the one in the collection?

Answer 1

• Ask the customer to verify their wallet using Sign in with Ethereum

• After you have verified the address of the customer wallet, you can use this address to query NFTs under it using web3.js and NFT ABIs

• ERC-1155 ABIs are available in several Github repositories

• You need an Ethreum node you can trust to give you a correct answer for proof of ownership queries

Answer 2

You can determine if a wallet holds an NFT or not using Moralis NFT API.

Here is an example step-by-step: https://docs.moralis.io/web3-data-api/evm/how-to-get-all-nfts-owned-by-an-address .

Also here is a guide on how to build a protected webpage that only an owner of an NFT can access: https://docs.moralis.io/example-dapps/evm/token-gating-website-nextjs .