Soroban NFT

[crude heron]

How to create NFT in soroban?

[stray bay]

I published a draft interface for nfts at

https://github.com/stellar/stellar-protocol/pull/1406 (erc1155 like)
Or
https://github.com/vinamogit/stellar-protocol/pull/2 (721 like)

No guarantees these stay in their current format though since theyre draft prs.

Also there is a more traditional erc721 interface at https://github.com/vinamogit/stellar-protocol/pull/1

Hope it helps

[crude heron]

So it isn't launched officially?

[stray bay]

These are still in review

[hollow palm]

The standards haven't been formalized yet but one of the authors @zenith fractalalso wrote this implementation:

https://github.com/candela-network/millionlumenhomepage.art/tree/main/erc721

[hollow palm]

@crude heron simplest way to create an NFT would be to include @zenith fractal 's WASM in your code and specify name and symbol before hitting deploy.

    pub fn initialize(env: Env, admin: Address) {
        let name = String::from_slice(&env, "Non-Fungible Token");
        let sym = String::from_slice(&env, "NFT");
        erc721::ERC721Contract::initialize(env, admin, name, sym);
    }

[crude heron]

Can we add this nft in wallet?

[crude heron]

okay, so when we can officially use this?

[young mica]

I am using @zenith fractal erc721 as a base contract for one nft project I am working on. Even if the review ends up in something completely different I guess it is a good starting point

[crude heron]

In that contract, I'm not able to get token_uri using token_id. Can you help with that?

[zenith fractal]

have you checked the example? https://github.com/candela-network/millionlumenhomepage.art/blob/main/erc721-example/src/lib.rs
It uses a storage entry to map a token id to an uri (written during mint)

[young mica]

Yeah but maybe he is talking about the million lummens contract where you are creating a url based off the token. But when he tries to invoke that url it will be returning 404 because the contract is not saving anything in the url right?

[crude heron]

I've gone through that but still not able to get uri using token_id.

[young mica]

I think the problem is that the example stores the value here

    // set the uri for the token id
    env.storage()
        .persistent()
        .set(&DatakeyMetadata::Uri(token_id), &uri);

But the getter gets from
erc721::ERC721Contract::token_uri(env, token_id)

[zenith fractal]

Yes right, it should be instance and not persistent it seems, or change the getter to get from persistent...

[stray bay]

Hey guys steve from the blue marble has open sourced the token contract compatible nft implementation they have made that i helped with. Here is a link

https://github.com/taskdotio/soroban-nft-royalties

[young mica]

Cool so is this a proposed standard? Will look more into the details of it later

[stray bay]

That implementation is what I had wrote a standard off of but there is discussion about whetther a NFT standard should even be defined if it's just a like incrimental token interface contract.

I don't think that one has the URI metadata in it though

[young mica]

I guess it would make sense so that anyone implementing systems to interact with the nfts knows what all NFTs have in common and in the same way everyone building nft projects know that by respecting the interface they will comply with the rules . So basically it will facilitate any current or future integrations I guess is what I am trying to say ahah