The LoyaltyPoint contract is the core contract for managing loyalty points. It defines the token logic, including minting and burning points (tokens), as well as role-based access control (RBAC) for managing permissions around minting.

​
Addresses

Gravity Alpha Testnet Sepolia: 0x8a85eC5AE1ae2c757eEfBb10b1203C984120bf8c

​
Key Features

  • Minting and Burning Allows approved minters to mint and burn loyalty points.
  • ERC20 Compatibility This contract follows the ERC20 token standard, making it interoperable with other blockchain systems.
  • Role-based Access Control (RBAC) Uses role-based control to assign permissions to mint and burn points.
  • Custom Metadata Name and symbol for the loyalty point can be customized during deployment.

​
Constructor

constructor(
    string memory _name,
    string memory _symbol,
    address _initialAdmin,
    address[] memory _minters
)
  • _name Name of the loyalty point token (e.g., “Galxe Points”).
  • _symbol Token symbol (e.g., “GP”).
  • _initialAdmin Admin address responsible for managing permissions.
  • _minters An array of addresses with permission to mint points.

​
Role Management

  • The DEFAULT_ADMIN_ROLE is given to the _initialAdmin address.
  • The MINTER_ROLE is assigned to any addresses specified in the _minters array.
  • Admin can add or revoke roles using grantRole and revokeRole.

​
Minting and Burning

  • mint()
    Allows any address with the MINTER_ROLE to mint new points.

    function mint(address _to, uint256 _amount) external;

  • burn()
    Allows any address with the MINTER_ROLE to burn points from a specified account.

    function burn(address _from, uint256 _amount) external;

​
Usage Example

To mint new loyalty points to a user:

loyaltyPoint.mint(userAddress, 1000);  // Mint 1000 points to userAddress

To burn loyalty points from a user:

loyaltyPoint.burn(userAddress, 500);  // Burn 500 points from userAddress

​
Custom Events

  • Mint Emitted when new points are minted.
    • to: The address receiving the minted points.
    • amount: The amount of points minted.
  • Burn Emitted when points are burned.
    • from: The address from which points are burned.
    • amount: The amount of points burned.

​
Security

  • Pausable The contract can be paused and unpaused by the admin using the inherited Pausable functionality.
  • Access Control Implements role-based control using OpenZeppelin’s AccessControl.

​
ABI

[
  {
    "type": "constructor",
    "inputs": [
      { "name": "spaceName", "type": "string", "internalType": "string" },
      { "name": "initialAdmin", "type": "address", "internalType": "address" },
      { "name": "minters", "type": "address[]", "internalType": "address[]" }
    ],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "DEFAULT_ADMIN_ROLE",
    "inputs": [],
    "outputs": [{ "name": "", "type": "bytes32", "internalType": "bytes32" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "DOMAIN_SEPARATOR",
    "inputs": [],
    "outputs": [{ "name": "", "type": "bytes32", "internalType": "bytes32" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "MINTER_ROLE",
    "inputs": [],
    "outputs": [{ "name": "", "type": "bytes32", "internalType": "bytes32" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "acceptDefaultAdminTransfer",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "allowance",
    "inputs": [
      { "name": "owner", "type": "address", "internalType": "address" },
      { "name": "spender", "type": "address", "internalType": "address" }
    ],
    "outputs": [{ "name": "", "type": "uint256", "internalType": "uint256" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "approve",
    "inputs": [
      { "name": "spender", "type": "address", "internalType": "address" },
      { "name": "value", "type": "uint256", "internalType": "uint256" }
    ],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "balanceOf",
    "inputs": [
      { "name": "account", "type": "address", "internalType": "address" }
    ],
    "outputs": [{ "name": "", "type": "uint256", "internalType": "uint256" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "beginDefaultAdminTransfer",
    "inputs": [
      { "name": "newAdmin", "type": "address", "internalType": "address" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "burn",
    "inputs": [
      { "name": "_user", "type": "address", "internalType": "address" },
      { "name": "_amount", "type": "uint256", "internalType": "uint256" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "burnBatch",
    "inputs": [
      { "name": "_users", "type": "address[]", "internalType": "address[]" },
      { "name": "_amounts", "type": "uint256[]", "internalType": "uint256[]" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "cancelDefaultAdminTransfer",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "changeDefaultAdminDelay",
    "inputs": [
      { "name": "newDelay", "type": "uint48", "internalType": "uint48" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "decimals",
    "inputs": [],
    "outputs": [{ "name": "", "type": "uint8", "internalType": "uint8" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "defaultAdmin",
    "inputs": [],
    "outputs": [{ "name": "", "type": "address", "internalType": "address" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "defaultAdminDelay",
    "inputs": [],
    "outputs": [{ "name": "", "type": "uint48", "internalType": "uint48" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "defaultAdminDelayIncreaseWait",
    "inputs": [],
    "outputs": [{ "name": "", "type": "uint48", "internalType": "uint48" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "eip712Domain",
    "inputs": [],
    "outputs": [
      { "name": "fields", "type": "bytes1", "internalType": "bytes1" },
      { "name": "name", "type": "string", "internalType": "string" },
      { "name": "version", "type": "string", "internalType": "string" },
      { "name": "chainId", "type": "uint256", "internalType": "uint256" },
      {
        "name": "verifyingContract",
        "type": "address",
        "internalType": "address"
      },
      { "name": "salt", "type": "bytes32", "internalType": "bytes32" },
      { "name": "extensions", "type": "uint256[]", "internalType": "uint256[]" }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "getRoleAdmin",
    "inputs": [
      { "name": "role", "type": "bytes32", "internalType": "bytes32" }
    ],
    "outputs": [{ "name": "", "type": "bytes32", "internalType": "bytes32" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "grantRole",
    "inputs": [
      { "name": "role", "type": "bytes32", "internalType": "bytes32" },
      { "name": "account", "type": "address", "internalType": "address" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "hasRole",
    "inputs": [
      { "name": "role", "type": "bytes32", "internalType": "bytes32" },
      { "name": "account", "type": "address", "internalType": "address" }
    ],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "mint",
    "inputs": [
      { "name": "_user", "type": "address", "internalType": "address" },
      { "name": "_amount", "type": "uint256", "internalType": "uint256" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "mintBatch",
    "inputs": [
      { "name": "_users", "type": "address[]", "internalType": "address[]" },
      { "name": "_amounts", "type": "uint256[]", "internalType": "uint256[]" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "name",
    "inputs": [],
    "outputs": [{ "name": "", "type": "string", "internalType": "string" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "nonces",
    "inputs": [
      { "name": "owner", "type": "address", "internalType": "address" }
    ],
    "outputs": [{ "name": "", "type": "uint256", "internalType": "uint256" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "owner",
    "inputs": [],
    "outputs": [{ "name": "", "type": "address", "internalType": "address" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "pause",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "paused",
    "inputs": [],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "pendingDefaultAdmin",
    "inputs": [],
    "outputs": [
      { "name": "newAdmin", "type": "address", "internalType": "address" },
      { "name": "schedule", "type": "uint48", "internalType": "uint48" }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "pendingDefaultAdminDelay",
    "inputs": [],
    "outputs": [
      { "name": "newDelay", "type": "uint48", "internalType": "uint48" },
      { "name": "schedule", "type": "uint48", "internalType": "uint48" }
    ],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "permit",
    "inputs": [
      { "name": "owner", "type": "address", "internalType": "address" },
      { "name": "spender", "type": "address", "internalType": "address" },
      { "name": "value", "type": "uint256", "internalType": "uint256" },
      { "name": "deadline", "type": "uint256", "internalType": "uint256" },
      { "name": "v", "type": "uint8", "internalType": "uint8" },
      { "name": "r", "type": "bytes32", "internalType": "bytes32" },
      { "name": "s", "type": "bytes32", "internalType": "bytes32" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "renounceRole",
    "inputs": [
      { "name": "role", "type": "bytes32", "internalType": "bytes32" },
      { "name": "account", "type": "address", "internalType": "address" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "revokeRole",
    "inputs": [
      { "name": "role", "type": "bytes32", "internalType": "bytes32" },
      { "name": "account", "type": "address", "internalType": "address" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "rollbackDefaultAdminDelay",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "setName",
    "inputs": [
      { "name": "newName", "type": "string", "internalType": "string" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "setSymbol",
    "inputs": [
      { "name": "newSymbol", "type": "string", "internalType": "string" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "setTransferable",
    "inputs": [
      { "name": "newTransferable", "type": "bool", "internalType": "bool" }
    ],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "supportsInterface",
    "inputs": [
      { "name": "interfaceId", "type": "bytes4", "internalType": "bytes4" }
    ],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "symbol",
    "inputs": [],
    "outputs": [{ "name": "", "type": "string", "internalType": "string" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "totalSupply",
    "inputs": [],
    "outputs": [{ "name": "", "type": "uint256", "internalType": "uint256" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "transfer",
    "inputs": [
      { "name": "to", "type": "address", "internalType": "address" },
      { "name": "value", "type": "uint256", "internalType": "uint256" }
    ],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "transferFrom",
    "inputs": [
      { "name": "from", "type": "address", "internalType": "address" },
      { "name": "to", "type": "address", "internalType": "address" },
      { "name": "value", "type": "uint256", "internalType": "uint256" }
    ],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "nonpayable"
  },
  {
    "type": "function",
    "name": "transferable",
    "inputs": [],
    "outputs": [{ "name": "", "type": "bool", "internalType": "bool" }],
    "stateMutability": "view"
  },
  {
    "type": "function",
    "name": "unpause",
    "inputs": [],
    "outputs": [],
    "stateMutability": "nonpayable"
  },
  {
    "type": "event",
    "name": "Approval",
    "inputs": [
      {
        "name": "owner",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "spender",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "value",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "DefaultAdminDelayChangeCanceled",
    "inputs": [],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "DefaultAdminDelayChangeScheduled",
    "inputs": [
      {
        "name": "newDelay",
        "type": "uint48",
        "indexed": false,
        "internalType": "uint48"
      },
      {
        "name": "effectSchedule",
        "type": "uint48",
        "indexed": false,
        "internalType": "uint48"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "DefaultAdminTransferCanceled",
    "inputs": [],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "DefaultAdminTransferScheduled",
    "inputs": [
      {
        "name": "newAdmin",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "acceptSchedule",
        "type": "uint48",
        "indexed": false,
        "internalType": "uint48"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "EIP712DomainChanged",
    "inputs": [],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "Paused",
    "inputs": [
      {
        "name": "account",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "RoleAdminChanged",
    "inputs": [
      {
        "name": "role",
        "type": "bytes32",
        "indexed": true,
        "internalType": "bytes32"
      },
      {
        "name": "previousAdminRole",
        "type": "bytes32",
        "indexed": true,
        "internalType": "bytes32"
      },
      {
        "name": "newAdminRole",
        "type": "bytes32",
        "indexed": true,
        "internalType": "bytes32"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "RoleGranted",
    "inputs": [
      {
        "name": "role",
        "type": "bytes32",
        "indexed": true,
        "internalType": "bytes32"
      },
      {
        "name": "account",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "sender",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "RoleRevoked",
    "inputs": [
      {
        "name": "role",
        "type": "bytes32",
        "indexed": true,
        "internalType": "bytes32"
      },
      {
        "name": "account",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "sender",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "Transfer",
    "inputs": [
      {
        "name": "from",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "to",
        "type": "address",
        "indexed": true,
        "internalType": "address"
      },
      {
        "name": "value",
        "type": "uint256",
        "indexed": false,
        "internalType": "uint256"
      }
    ],
    "anonymous": false
  },
  {
    "type": "event",
    "name": "Unpaused",
    "inputs": [
      {
        "name": "account",
        "type": "address",
        "indexed": false,
        "internalType": "address"
      }
    ],
    "anonymous": false
  },
  { "type": "error", "name": "AccessControlBadConfirmation", "inputs": [] },
  {
    "type": "error",
    "name": "AccessControlEnforcedDefaultAdminDelay",
    "inputs": [
      { "name": "schedule", "type": "uint48", "internalType": "uint48" }
    ]
  },
  {
    "type": "error",
    "name": "AccessControlEnforcedDefaultAdminRules",
    "inputs": []
  },
  {
    "type": "error",
    "name": "AccessControlInvalidDefaultAdmin",
    "inputs": [
      { "name": "defaultAdmin", "type": "address", "internalType": "address" }
    ]
  },
  {
    "type": "error",
    "name": "AccessControlUnauthorizedAccount",
    "inputs": [
      { "name": "account", "type": "address", "internalType": "address" },
      { "name": "neededRole", "type": "bytes32", "internalType": "bytes32" }
    ]
  },
  { "type": "error", "name": "ECDSAInvalidSignature", "inputs": [] },
  {
    "type": "error",
    "name": "ECDSAInvalidSignatureLength",
    "inputs": [
      { "name": "length", "type": "uint256", "internalType": "uint256" }
    ]
  },
  {
    "type": "error",
    "name": "ECDSAInvalidSignatureS",
    "inputs": [{ "name": "s", "type": "bytes32", "internalType": "bytes32" }]
  },
  {
    "type": "error",
    "name": "ERC20InsufficientAllowance",
    "inputs": [
      { "name": "spender", "type": "address", "internalType": "address" },
      { "name": "allowance", "type": "uint256", "internalType": "uint256" },
      { "name": "needed", "type": "uint256", "internalType": "uint256" }
    ]
  },
  {
    "type": "error",
    "name": "ERC20InsufficientBalance",
    "inputs": [
      { "name": "sender", "type": "address", "internalType": "address" },
      { "name": "balance", "type": "uint256", "internalType": "uint256" },
      { "name": "needed", "type": "uint256", "internalType": "uint256" }
    ]
  },
  {
    "type": "error",
    "name": "ERC20InvalidApprover",
    "inputs": [
      { "name": "approver", "type": "address", "internalType": "address" }
    ]
  },
  {
    "type": "error",
    "name": "ERC20InvalidReceiver",
    "inputs": [
      { "name": "receiver", "type": "address", "internalType": "address" }
    ]
  },
  {
    "type": "error",
    "name": "ERC20InvalidSender",
    "inputs": [
      { "name": "sender", "type": "address", "internalType": "address" }
    ]
  },
  {
    "type": "error",
    "name": "ERC20InvalidSpender",
    "inputs": [
      { "name": "spender", "type": "address", "internalType": "address" }
    ]
  },
  {
    "type": "error",
    "name": "ERC2612ExpiredSignature",
    "inputs": [
      { "name": "deadline", "type": "uint256", "internalType": "uint256" }
    ]
  },
  {
    "type": "error",
    "name": "ERC2612InvalidSigner",
    "inputs": [
      { "name": "signer", "type": "address", "internalType": "address" },
      { "name": "owner", "type": "address", "internalType": "address" }
    ]
  },
  { "type": "error", "name": "EnforcedPause", "inputs": [] },
  { "type": "error", "name": "ExpectedPause", "inputs": [] },
  {
    "type": "error",
    "name": "InvalidAccountNonce",
    "inputs": [
      { "name": "account", "type": "address", "internalType": "address" },
      { "name": "currentNonce", "type": "uint256", "internalType": "uint256" }
    ]
  },
  { "type": "error", "name": "InvalidAddress", "inputs": [] },
  { "type": "error", "name": "InvalidShortString", "inputs": [] },
  { "type": "error", "name": "ParamsLengthMismatch", "inputs": [] },
  { "type": "error", "name": "PermissionDenied", "inputs": [] },
  {
    "type": "error",
    "name": "SafeCastOverflowedUintDowncast",
    "inputs": [
      { "name": "bits", "type": "uint8", "internalType": "uint8" },
      { "name": "value", "type": "uint256", "internalType": "uint256" }
    ]
  },
  { "type": "error", "name": "SetTransferableNotAllowed", "inputs": [] },
  {
    "type": "error",
    "name": "StringTooLong",
    "inputs": [{ "name": "str", "type": "string", "internalType": "string" }]
  },
  { "type": "error", "name": "TransferNotAllow", "inputs": [] }
]
HookLoyaltyPointFactory