ERC 721
We’ve discussed how you can make a fungible token using ERC20, but what if not all tokens are alike? This comes up in situations like real estate, voting rights, or collectibles, where some items are valued more than others, due to their usefulness, rarity, etc. ERC721 is a standard for representing ownership of non-fungible tokens, where each token is unique.
Inputs:
Platform Setting:
Chain: Network to deploy the contract
Custodial Wallet: Custodial wallet to deploy the contract
Contract Setting:
Contract name: Name for the contract
Contract symbol: Symbol for the contract
Base URI: Concatenated with token IDs to generate the token URIs
Features:
Mintable: Privileged accounts can create more supply
Burnable: Token holders can destroy their tokens
Pausable: Privileged accounts can pause functionality (useful for emergency response)
Auto Increment Ids: New tokens will be automatically assigned an incremental ID
Votes: Keeps track of historical balances for voting in on-chain governance, with delegation capability
Enumerable: Allows on-chain enumeration of all tokens or those owned by an account
URI Storage: Allows updating token URIs for individual token IDs
Access Control:
Ownable: Simple mechanism with a single account authorized for all privileged actions
Roles: Flexible mechanism with a separate role for each privileged action
Upgradeability:
Transport: Uses a more complex proxy with higher overhead, requires fewer changes in your contract
UUPS: Uses a simpler proxy with less overhead, requires including extra code in your contract
Info:
Contact: Contact information for reporting security issues
License: License information
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