SoulboundToken
0x5E206F6392dD1484D58D0A80E1C3760d79Ea281dVerifiedNative balance0USDX
Account typeSmart contract
NetworkTuven 99359
Overview
- Contract name
- SoulboundToken
- Verification
- Verified source
- Creation transaction
- 0x57738e1a55a4f0a9ef4e557b3cba1d26c035342c8deae0a35389cd7fed20ec53
- Token
- Tuven SBT
- Balance updated at block
- 12551
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import {ERC721URIStorage} from "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
interface ISponsorRegistry {
function setSponsored(address who, bool on) external;
}
/// @notice Non-transferable ERC721 (ERC-5192 semantics). The issuer mints and
/// revokes; holders cannot transfer.
///
/// This token is a *source* for the SponsorRegistry: issuing marks the
/// holder as sponsored (pays gas in UMCC), and revoking clears it. For
/// the registry calls to succeed, the registry's
/// `authorizedSource[thisSBT]` must be true (wired by the multisig at
/// deploy via addSource).
contract SoulboundToken is ERC721URIStorage {
address public immutable issuer;
ISponsorRegistry public immutable registry;
error NotIssuer();
error Soulbound();
event Issued(address indexed to, uint256 indexed tokenId, string uri);
event Revoked(uint256 indexed tokenId);
modifier onlyIssuer() {
if (msg.sender != issuer) revert NotIssuer();
_;
}
constructor(
address _issuer,
address _registry,
string memory name_,
string memory symbol_
) ERC721(name_, symbol_) {
require(_issuer != address(0), "issuer=0");
require(_registry != address(0), "registry=0");
issuer = _issuer;
registry = ISponsorRegistry(_registry);
}
function issue(address to, uint256 tokenId, string calldata uri) external onlyIssuer {
_safeMint(to, tokenId);
if (bytes(uri).length != 0) {
_setTokenURI(tokenId, uri);
}
// Mark the holder as sponsored (gas paid in UMCC).
registry.setSponsored(to, true);
emit Issued(to, tokenId, uri);
}
function revoke(uint256 tokenId) external onlyIssuer {
address owner = ownerOf(tokenId);
_burn(tokenId);
// Clear the holder's sponsored flag on revocation.
registry.setSponsored(owner, false);
emit Revoked(tokenId);
}
/// @dev Block transfers. Allow only mint (from == 0) and burn (to == 0).
function _update(address to, uint256 tokenId, address auth) internal override returns (address) {
address from = _ownerOf(tokenId);
if (from != address(0) && to != address(0)) revert Soulbound();
return super._update(to, tokenId, auth);
}
}
Contract ABI
[
{
"inputs": [
{
"internalType": "address",
"name": "_issuer",
"type": "address"
},
{
"internalType": "address",
"name": "_registry",
"type": "address"
},
{
"internalType": "string",
"name": "name_",
"type": "string"
},
{
"internalType": "string",
"name": "symbol_",
"type": "string"
}
],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"inputs": [
{
"internalType": "address",
"name": "sender",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
},
{
"internalType": "address",
"name": "owner",
"type": "address"
}
],
"name": "ERC721IncorrectOwner",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "operator",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "ERC721InsufficientApproval",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "approver",
"type": "address"
}
],
"name": "ERC721InvalidApprover",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "operator",
"type": "address"
}
],
"name": "ERC721InvalidOperator",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
}
],
"name": "ERC721InvalidOwner",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "receiver",
"type": "address"
}
],
"name": "ERC721InvalidReceiver",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "sender",
"type": "address"
}
],
"name": "ERC721InvalidSender",
"type": "error"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "ERC721NonexistentToken",
"type": "error"
},
{
"inputs": [],
"name": "NotIssuer",
"type": "error"
},
{
"inputs": [],
"name": "Soulbound",
"type": "error"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "approved",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "Approval",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "operator",
"type": "address"
},
{
"indexed": false,
"internalType": "bool",
"name": "approved",
"type": "bool"
}
],
"name": "ApprovalForAll",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "uint256",
"name": "_fromTokenId",
"type": "uint256"
},
{
"indexed": false,
"internalType": "uint256",
"name": "_toTokenId",
"type": "uint256"
}
],
"name": "BatchMetadataUpdate",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "to",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
},
{
"indexed": false,
"internalType": "string",
"name": "uri",
"type": "string"
}
],
"name": "Issued",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "uint256",
"name": "_tokenId",
"type": "uint256"
}
],
"name": "MetadataUpdate",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "Revoked",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "from",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "to",
"type": "address"
},
{
"indexed": true,
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "Transfer",
"type": "event"
},
{
"inputs": [
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "approve",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
}
],
"name": "balanceOf",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "getApproved",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"internalType": "address",
"name": "operator",
"type": "address"
}
],
"name": "isApprovedForAll",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
},
{
"internalType": "string",
"name": "uri",
"type": "string"
}
],
"name": "issue",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "issuer",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "name",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "ownerOf",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "registry",
"outputs": [
{
"internalType": "contract ISponsorRegistry",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "revoke",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "from",
"type": "address"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "safeTransferFrom",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "from",
"type": "address"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
},
{
"internalType": "bytes",
"name": "data",
"type": "bytes"
}
],
"name": "safeTransferFrom",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "operator",
"type": "address"
},
{
"internalType": "bool",
"name": "approved",
"type": "bool"
}
],
"name": "setApprovalForAll",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "bytes4",
"name": "interfaceId",
"type": "bytes4"
}
],
"name": "supportsInterface",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "symbol",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "tokenURI",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "from",
"type": "address"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "tokenId",
"type": "uint256"
}
],
"name": "transferFrom",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
}
]