nftAbi

[CodeLikeLisa]

I am trying to find out if anyone here has a resource or knows how one world fetch abi's of an infinite number of nft collections... I was surprised to find out nftAbi's are necessary for a marketplace to interact with a collection as it confused me regarding how marketplaces have access to these abi's (automatically - I understand the manual process that is shared in this tutorial) as I am unaware of a call that fetches abi's from the blockchain/etherscan etc... Does anyone have any guidance they're willing to share on this? or logic even... Am I thinking about this the right way?

[krakxn]

Flowchart of how Opensea's Seaport/Marketplace works: https://github.com/ProjectOpenSea/seaport/blob/main/diagrams/Seaport.drawio.svg

[CodeLikeLisa]

The question is how do we get ABI and I am telling you that you cannot using a wallet address and marketplaces do not do this using ipfs

[krakxn]

Opensea does. If you specify the marketplace I can explain the algorithm behind it

[CodeLikeLisa]

No you clearly cannot - thanks

[CodeLikeLisa]

thanks for your time anyway

[CodeLikeLisa]

It almost seems like you're here to troll... Let people who know what they're talking about answer the questions please. I appreciate you wanting to answer but you cannot honestly teach anyone anything you do not know yourself... It wastes everyones time

[btwandrew]

The ways of fetching the ABI @krakxn mentioned are indeed correct. There is one more way:

• ERC721 Txns (sample address: https://etherscan.io/address/0x4EacA2F7dAAE09D1cb4E35ba17C0680360014aDe#tokentxnsErc721)
• Can get the tokens stored in user wallet
• Token addresses -> ABI (by encoding contract data from Etherscan>Analytics)

This one is similar to the one @krakxn recommended, but instead of directly displaying the tokens the wallet has, we do it by transactions instead

[CodeLikeLisa]

programmatically was the question...

It's quite simple going to etherscan to get contract abi... How would we do it in code? (in the event that we weren't the deployer)

[CodeLikeLisa]

https://www.youtube.com/watch?v=dArGajlpng0 Found the answer thanks @krakxn @btwandrew

[krakxn]

That is awesome, best of luck!

[mattjaf]

from my understanding,

ABI is the interface,

so they get it from standards, such as IERC721 and IERC1155

[krakxn]

@CodeLikeLisa A sample program to fetch ABI w/ Ethers:

// Using Solidity

// The compiler
var solc = require('solc');

// Contract source code
var source = "contract TestContract { }";

// The compiled result
var compiled = solc.compile(source);

// The ABI
var abi = compiled.contracts.TestContract.interface