The standard for secure NFTs

OpenGem provides tools for users and developers to secure ownership of digital assets. We also advice leading organizations by performing audits on their NFT products.

Gem score

Audit to evaluate level of ownership NFT collections offer

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Team follow-up

A coaching for your team to provide trustable NFT project

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Standard

Smart contract standard for secured NFT offering sovereignty for creators and the best level of ownership for owners

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Forge

Tool to deploy your sovereign smart contract & create persistent NFTs

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              pragma solidity ^0.8.9;
              

              import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
              import  "@opengem/contracts/token/ERC721/extensions/ERC721PermanentURIs.sol";


              

              contract Example is ERC721, ERC721PermanentURIs {
              

              constructor() ERC721( "ExampleToken", "ETK" ) {
              _addPermanentURI("ipfs://QmXXX/", ".json");
              }
              

              function safeMint(address to, uint256 tokenId) public { 
              _safeMint(to, tokenId);
              _addPermanentTokenURI(tokenId, "arweave.net/xxx");
              }
              }

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The challenges for secure NFTs

PERSISTENCE

Like physical assets, digital assets are subject to alteration over time.

DECENTRALIZATION

NFTs do not systematically guarantee ownership to the owner.

SECURITY

Smart contracts are subject to security breaches especially when standards are not followed.