Notifications (Events)

DApps can subscribe to the following events being emitted by Quadrata's smart contracts to get notified in real time.
​
Event SetAttributeReceipt
Emitted when a passport attribute is issued or updated
IQuadPassport.sol
import "@quadrata/contracts/interfaces/IQuadPassport.sol";
​
event SetAttributeReceipt(
    address indexed _account,   // Address of the Passport holder
    address indexed _issuer,    // Address of the Passport Issuer 
    uint256 _fee                // Fee paid to the Passport Issuer
);
Event BurnPassportsIssuer
Emitted when a passport has been burned by a Passport Issuer
IQuadPassport.sol
import "@quadrata/contracts/interfaces/IQuadPassport.sol";
​
event BurnPassportsIssuer(
    address indexed _issuer,    // Address of the Passport holder
    address indexed _account    // Address of the Passport Issuer 
);
import "@quadrata/contracts/interfaces/IQuadSoulBound.sol";
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(
    address indexed operator, // Address of the Passport Issuer
    address indexed from,     // Address of the Passport holder
    address indexed to,       // Address 0x00..000 signals a burn
    uint256 id,               // ID of Issuer
    uint256 value             // Amount of NFT deleted, should always be 1
);
Event BurnPassports (using TransferSingle event)
Emitted when a Passport holder deletes their own passport
import "@quadrata/contracts/interfaces/IQuadSoulBound.sol";
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(
    address indexed operator, // Address of the Passport holder
    address indexed from,     // Address of the Passport holder
    address indexed to,       // Address 0x00..000 signals a burn
    uint256 id,               // ID of Issuer
    uint256 value             // Amount of NFT deleted, should always be 1
);
TransferSingle is emitted for all burns and mints, so pay attention to the arguments to detect if it is a burn and which type of burn it is.
Event QueryEvent
Emitted when an attribute is queried for a Passport holder
IQuadReader.sol
import "@quadrata/contracts/interfaces/IQuadReader.sol";
​
event QueryEvent(
    address indexed _account,    // Address of the Passport holder 
    address indexed _caller,     // Address of the smart contract querying the info
    bytes32 _attribute           // Attribute being queried 
);
Event QueryEventBulk
Emitted when multiple attributes are queried for a Passport holder
IQuadReader.sol
import "@quadrata/contracts/interfaces/IQuadReader.sol";
​
event QueryBulkEvent(
    address indexed _account,    // Address of the Passport holder  
    address indexed _caller,     // Address of the smart contract querying the info 
    bytes32[] _attributes        // List of attributes being queried 
);
​
Last modified 2mo ago