erc721-implementation

If your project requires max 256 non-fungible tokens, this is the implementation you should use as the most gas efficient.

Note: This implementation does not contain code related to ERC721Metadata. It's up to the user to add that to support explorers, exchanges and whatnot. See ExampleERC721Metadata.sol.

If you really need an implementation that supports more NFTs, like 257 or maybe even 496, I recommend one of these repositories:

• https://github.com/0xcert/ethereum-erc721
• https://github.com/OpenZeppelin/openzeppelin-solidity

And remember: scarcity is the key.