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LSP8IdentifiableDigitalAsset

Standard Specifications
Solidity implementation

Implementation of a LSP8 Identifiable Digital Asset, a contract that represents a non-fungible token.

Standard implementation contract of the LSP8 standard. Minting and transferring are done by providing a unique tokenId. This implementation is agnostic to the way tokens are created. A supply mechanism has to be added in a derived contract using _mint For a generic mechanism, see LSP7Mintable.

Public Methods

Public methods are accessible externally from users, allowing interaction with this function from dApps or other smart contracts. When marked as 'public', a method can be called both externally and internally, on the other hand, when marked as 'external', a method can only be called externally.

fallback

References
fallback(bytes calldata callData) external payable returns (bytes memory);

The fallback function was called with the following amount of native tokens: msg.value; and the following calldata: callData.

Achieves the goal of LSP-17-ContractExtension standard by extending the contract to handle calls of functions that do not exist natively, forwarding the function call to the extension address mapped to the function being called. This function is executed when:

  • Sending data of length less than 4 bytes to the contract.

  • The first 4 bytes of the calldata do not match any publicly callable functions from the contract ABI.

  • Receiving native tokens

  1. If the data is equal or longer than 4 bytes, the ERC-725Y storage is queried with the following data key: _LSP17_EXTENSION_PREFIX + bytes4(msg.sig) (Check LSP-2-ERC725YJSONSchema for encoding the data key)
  • If there is no address stored under the following data key, revert with NoExtensionFoundForFunctionSelector(bytes4). The data key relative to bytes4(0) is an exception, where no reverts occurs if there is no extension address stored under. This exception is made to allow users to send random data (graffiti) to the account and to be able to react on it.

  • If there is an address, forward the msg.data to the extension using the CALL opcode, appending 52 bytes (20 bytes of msg.sender and 32 bytes of msg.value). Return what the calls returns, or revert if the call failed.

  1. If the data sent to this function is of length less than 4 bytes (not a function selector), revert.

receive

References
receive() external payable;

LSP8 contract cannot receive native tokens.

Reverts whenever someone tries to send native tokens to a LSP8 contract.


authorizeOperator

References
function authorizeOperator(
address operator,
bytes32 tokenId,
bytes operatorNotificationData
) external nonpayable;

Allow an operator address to transfer or burn a specific tokenId on behalf of its token owner. See isOperatorFor. Notify the operator based on the LSP1-UniversalReceiver standard

Parameters

NameTypeDescription
operatoraddressThe address to authorize as an operator.
tokenIdbytes32The token ID operator has access to.
operatorNotificationDatabytesThe data to notify the operator about via LSP1.

balanceOf

References
function balanceOf(address tokenOwner) external view returns (uint256);

Get the number of token IDs owned by tokenOwner.

Parameters

NameTypeDescription
tokenOwneraddressThe address to query *

Returns

NameTypeDescription
0uint256The total number of token IDs that tokenOwner owns.

getData

References
function getData(bytes32 dataKey) external view returns (bytes dataValue);

Reading the ERC725Y storage for data key dataKey returned the following value: dataValue.

Get in the ERC725Y storage the bytes data stored at a specific data key dataKey.

Parameters

NameTypeDescription
dataKeybytes32The data key for which to retrieve the value.

Returns

NameTypeDescription
dataValuebytesThe bytes value stored under the specified data key.

getDataBatch

References
function getDataBatch(
bytes32[] dataKeys
) external view returns (bytes[] dataValues);

Reading the ERC725Y storage for data keys dataKeys returned the following values: dataValues.

Get in the ERC725Y storage the bytes data stored at multiple data keys dataKeys.

Parameters

NameTypeDescription
dataKeysbytes32[]The array of keys which values to retrieve

Returns

NameTypeDescription
dataValuesbytes[]The array of data stored at multiple keys

getOperatorsOf

References
function getOperatorsOf(bytes32 tokenId) external view returns (address[]);

Returns all operator addresses that are allowed to transfer or burn a specific tokenId on behalf of its owner.

Parameters

NameTypeDescription
tokenIdbytes32The token ID to get the operators for.

Returns

NameTypeDescription
0address[]An array of operators allowed to transfer or burn a specific tokenId. Requirements - tokenId must exist.

isOperatorFor

References
function isOperatorFor(
address operator,
bytes32 tokenId
) external view returns (bool);

Returns whether operator address is an operator for a given tokenId.

Parameters

NameTypeDescription
operatoraddressThe address to query operator status for.
tokenIdbytes32The token ID to check if operator is allowed to operate on.

Returns

NameTypeDescription
0booltrue if operator is an operator for tokenId, false otherwise.

owner

References
function owner() external view returns (address);

Returns the address of the current owner.

Returns

NameTypeDescription
0address-

renounceOwnership

References
function renounceOwnership() external nonpayable;

Leaves the contract without owner. It will not be possible to call onlyOwner functions anymore. Can only be called by the current owner. NOTE: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner.


revokeOperator

References
function revokeOperator(
address operator,
bytes32 tokenId,
bool notify,
bytes operatorNotificationData
) external nonpayable;

Remove access of operator for a given tokenId, disallowing it to transfer tokenId on behalf of its owner. See also isOperatorFor.

Parameters

NameTypeDescription
operatoraddressThe address to revoke as an operator.
tokenIdbytes32The tokenId operator is revoked from operating on.
notifyboolBoolean indicating whether to notify the operator or not
operatorNotificationDatabytesThe data to notify the operator about via LSP1.

setData

References
Warning

Note for developers: despite the fact that this function is set as payable, if the function is not intended to receive value (= native tokens), an additional check should be implemented to ensure that msg.value sent was equal to 0.

function setData(bytes32 dataKey, bytes dataValue) external payable;

Setting the following data key value pair in the ERC725Y storage. Data key: dataKey, data value: dataValue.

Sets a single bytes value dataValue in the ERC725Y storage for a specific data key dataKey. The function is marked as payable to enable flexibility on child contracts. For instance to implement a fee mechanism for setting specific data.

Requirements:

  • SHOULD only be callable by the owner.

Emitted events:

Parameters

NameTypeDescription
dataKeybytes32The data key for which to set a new value.
dataValuebytesThe new bytes value to set.

setDataBatch

References
Warning

Note for developers: despite the fact that this function is set as payable, if the function is not intended to receive value (= native tokens), an additional check should be implemented to ensure that msg.value sent was equal to 0.

function setDataBatch(bytes32[] dataKeys, bytes[] dataValues) external payable;

Setting the following data key value pairs in the ERC725Y storage. Data keys: dataKeys, data values: dataValues.

Batch data setting function that behaves the same as setData but allowing to set multiple data key/value pairs in the ERC725Y storage in the same transaction.

Requirements:

  • SHOULD only be callable by the owner of the contract.

Emitted events:

Parameters

NameTypeDescription
dataKeysbytes32[]An array of data keys to set bytes values for.
dataValuesbytes[]An array of bytes values to set for each dataKeys.

supportsInterface

References
function supportsInterface(bytes4 interfaceId) external view returns (bool);

Returns true if this contract implements the interface defined by interfaceId. See the corresponding https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] to learn more about how these ids are created. This function call must use less than 30 000 gas.

Parameters

NameTypeDescription
interfaceIdbytes4-

Returns

NameTypeDescription
0bool-

tokenIdsOf

References
function tokenIdsOf(address tokenOwner) external view returns (bytes32[]);

Returns the list of token IDs that the tokenOwner address owns.

Parameters

NameTypeDescription
tokenOwneraddressThe address that we want to get the list of token IDs for.

Returns

NameTypeDescription
0bytes32[]An array of bytes32[] tokenIds owned by tokenOwner.

tokenOwnerOf

References
function tokenOwnerOf(bytes32 tokenId) external view returns (address);

Returns the list of tokenIds for the tokenOwner address.

Parameters

NameTypeDescription
tokenIdbytes32tokenOwner The address to query owned tokens

Returns

NameTypeDescription
0addressThe owner address of the given tokenId.

totalSupply

References
function totalSupply() external view returns (uint256);

Returns the number of existing tokens that have been minted in this contract.

Returns

NameTypeDescription
0uint256The number of existing tokens.

transfer

References
function transfer(
address from,
address to,
bytes32 tokenId,
bool force,
bytes data
) external nonpayable;

Transfer a given tokenId token from the from address to the to address. If operators are set for a specific tokenId, all the operators are revoked after the tokenId have been transferred. The force parameter MUST be set to true when transferring tokens to Externally Owned Accounts (EOAs) or contracts that do not implement the LSP1 standard.

Parameters

NameTypeDescription
fromaddressThe address that owns the given tokenId.
toaddressThe address that will receive the tokenId.
tokenIdbytes32The token ID to transfer.
forceboolWhen set to true, the to address CAN be any addres. When set to false, the to address MUST be a contract that supports the LSP1 UniversalReceiver standard.
databytesAny additional data the caller wants included in the emitted event, and sent in the hooks of the from and to addresses.

transferBatch

References
function transferBatch(
address[] from,
address[] to,
bytes32[] tokenId,
bool[] force,
bytes[] data
) external nonpayable;

Transfers multiple tokens at once based on the arrays of from, to and tokenId. If any transfer fails, the whole call will revert.

Parameters

NameTypeDescription
fromaddress[]An array of sending addresses.
toaddress[]An array of recipient addresses.
tokenIdbytes32[]An array of token IDs to transfer.
forcebool[]When set to true, to may be any address. When set to false, to must be a contract that supports the LSP1 standard and not revert.
databytes[]Any additional data the caller wants included in the emitted event, and sent in the hooks to the from and to addresses.

transferOwnership

References
function transferOwnership(address newOwner) external nonpayable;

Transfers ownership of the contract to a new account (newOwner). Can only be called by the current owner.

Parameters

NameTypeDescription
newOwneraddress-

Internal Methods

Any method labeled as internal serves as utility function within the contract. They can be used when writing solidity contracts that inherit from this contract. These methods can be extended or modified by overriding their internal behavior to suit specific needs.

Internal functions cannot be called externally, whether from other smart contracts, dApp interfaces, or backend services. Their restricted accessibility ensures that they remain exclusively available within the context of the current contract, promoting controlled and encapsulated usage of these internal utilities.

_checkOwner

function _checkOwner() internal view;

Throws if the sender is not the owner.


_setOwner

function _setOwner(address newOwner) internal nonpayable;

Changes the owner if newOwner and oldOwner are different This pattern is useful in inheritance.


_getData

function _getData(bytes32 dataKey) internal view returns (bytes dataValue);

Read the value stored under a specific dataKey inside the underlying ERC725Y storage, represented as a mapping of bytes32 data keys mapped to their bytes data values.

mapping(bytes32 => bytes) _store

Parameters

NameTypeDescription
dataKeybytes32A bytes32 data key to read the associated bytes value from the store.

Returns

NameTypeDescription
dataValuebytesThe bytes value associated with the given dataKey in the ERC725Y storage.

_setData

function _setData(bytes32 dataKey, bytes dataValue) internal nonpayable;

The ERC725Y data key _LSP8_TOKENID_TYPE_KEY cannot be changed once the identifiable digital asset contract has been deployed.


_isOperatorOrOwner

function _isOperatorOrOwner(
address caller,
bytes32 tokenId
) internal view returns (bool);

verifies if the caller is operator or owner for the tokenId

Returns

NameTypeDescription
0booltrue if caller is either operator or owner

_revokeOperator

function _revokeOperator(
address operator,
address tokenOwner,
bytes32 tokenId,
bool notified,
bytes operatorNotificationData
) internal nonpayable;

removes operator from the list of operators for the tokenId


_clearOperators

function _clearOperators(
address tokenOwner,
bytes32 tokenId
) internal nonpayable;

revoke all the current operators for a specific tokenId token which belongs to tokenOwner.

Parameters

NameTypeDescription
tokenOwneraddressThe address that is the owner of the tokenId.
tokenIdbytes32The token to remove the associated operators for.

_exists

function _exists(bytes32 tokenId) internal view returns (bool);

Returns whether tokenId exists. Tokens start existing when they are minted (_mint), and stop existing when they are burned (_burn).


_existsOrError

function _existsOrError(bytes32 tokenId) internal view;

When tokenId does not exist then revert with an error.


_mint

info

Any logic in the:

  • _beforeTokenTransfer function will run before updating the balances and ownership of tokenIds.

  • _afterTokenTransfer function will run after updating the balances and ownership of tokenIds, but before notifying the recipient via LSP1.

function _mint(
address to,
bytes32 tokenId,
bool force,
bytes data
) internal nonpayable;

Create tokenId by minting it and transfers it to to.

Emitted events:

  • Transfer event with address(0) as from address.

Parameters

NameTypeDescription
toaddress@param tokenId The token ID to create (= mint).
tokenIdbytes32The token ID to create (= mint).
forceboolWhen set to true, to may be any address. When set to false, to must be a contract that supports the LSP1 standard.
databytesAny additional data the caller wants included in the emitted event, and sent in the hook of the to address.

_burn

info

Any logic in the:

  • _beforeTokenTransfer function will run before updating the balances and ownership of tokenIds.

  • _afterTokenTransfer function will run after updating the balances and ownership of tokenIds, but before notifying the sender via LSP1.

Hint

In dApps, you can know which addresses are burning tokens by listening for the Transfer event and filter with the zero address as to.

function _burn(bytes32 tokenId, bytes data) internal nonpayable;

Burn a specific tokenId, removing the tokenId from the tokenIdsOf the caller and decreasing its balanceOf by -1. This will also clear all the operators allowed to transfer the tokenId. The owner of the tokenId will be notified about the tokenId being transferred through its LSP1 universalReceiver function, if it is a contract that supports the LSP1 interface. Its universalReceiver function will receive all the parameters in the calldata packed encoded.

Emitted events:

  • Transfer event with address(0) as the to address.

Parameters

NameTypeDescription
tokenIdbytes32The token to burn.
databytesAny additional data the caller wants included in the emitted event, and sent in the LSP1 hook on the token owner's address.

_transfer

info

Any logic in the:

  • _beforeTokenTransfer function will run before updating the balances and ownership of tokenIds.

  • _afterTokenTransfer function will run after updating the balances and ownership of tokenIds, but before notifying the sender/recipient via LSP1.

danger

This internal function does not check if the sender is authorized or not to operate on the tokenId.

function _transfer(
address from,
address to,
bytes32 tokenId,
bool force,
bytes data
) internal nonpayable;

Change the owner of the tokenId from from to to. Both the sender and recipient will be notified of the tokenId being transferred through their LSP1 universalReceiver function, if they are contracts that support the LSP1 interface. Their universalReceiver function will receive all the parameters in the calldata packed encoded.

Emitted events:

Parameters

NameTypeDescription
fromaddressThe sender address.
toaddress@param tokenId The token to transfer.
tokenIdbytes32The token to transfer.
forceboolWhen set to true, to may be any address. When set to false, to must be a contract that supports the LSP1 standard.
databytesAdditional data the caller wants included in the emitted event, and sent in the hooks to from and to addresses.

_beforeTokenTransfer

function _beforeTokenTransfer(
address from,
address to,
bytes32 tokenId,
bytes data
) internal nonpayable;

Hook that is called before any token transfer, including minting and burning. Allows to run custom logic before updating balances and notifiying sender/recipient by overriding this function.

Parameters

NameTypeDescription
fromaddressThe sender address
toaddress@param tokenId The tokenId to transfer
tokenIdbytes32The tokenId to transfer
databytesThe data sent alongside the transfer

_afterTokenTransfer

function _afterTokenTransfer(
address from,
address to,
bytes32 tokenId,
bytes data
) internal nonpayable;

Hook that is called after any token transfer, including minting and burning. Allows to run custom logic after updating balances, but before notifiying sender/recipient via LSP1 by overriding this function.

Parameters

NameTypeDescription
fromaddressThe sender address
toaddress@param tokenId The tokenId to transfer
tokenIdbytes32The tokenId to transfer
databytesThe data sent alongside the transfer

_notifyTokenReceiver

function _notifyTokenReceiver(
address to,
bool force,
bytes lsp1Data
) internal nonpayable;

An attempt is made to notify the token receiver about the tokenId changing owners using LSP1 interface. When force is FALSE the token receiver MUST support LSP1. The receiver may revert when the token being sent is not wanted.


_supportsInterfaceInERC165Extension

function _supportsInterfaceInERC165Extension(
bytes4 interfaceId
) internal view returns (bool);

Returns whether the interfaceId being checked is supported in the extension of the supportsInterface selector. To be used by extendable contracts wishing to extend the ERC165 interfaceIds originally supported by reading whether the interfaceId queried is supported in the supportsInterface extension if the extension is set, if not it returns false.


_getExtensionAndForwardValue

function _getExtensionAndForwardValue(
bytes4 functionSelector
) internal view returns (address, bool);

Returns the extension address stored under the following data key:

  • _LSP17_EXTENSION_PREFIX + <bytes4> (Check [LSP2-ERC725YJSONSchema] for encoding the data key).

  • If no extension is stored, returns the address(0).


_fallbackLSP17Extendable

info

The LSP8 Token contract should not hold any native tokens. Any native tokens received by the contract will be forwarded to the extension address mapped to the selector from msg.sig.

function _fallbackLSP17Extendable(
bytes callData
) internal nonpayable returns (bytes);

Forwards the call with the received value to an extension mapped to a function selector. Calls _getExtensionAndForwardValue to get the address of the extension mapped to the function selector being called on the account. If there is no extension, the address(0) will be returned. We will always forward the value to the extension, as the LSP8 contract is not supposed to hold any native tokens. Reverts if there is no extension for the function being called. If there is an extension for the function selector being called, it calls the extension with the CALL opcode, passing the msg.data appended with the 20 bytes of the msg.sender and 32 bytes of the msg.value


Events

AuthorizedOperator

References
event AuthorizedOperator(address indexed operator, address indexed tokenOwner, bytes32 indexed tokenId, bytes operatorNotificationData);

Emitted when tokenOwner enables operator to transfer or burn the tokenId.

Parameters

NameTypeDescription
operator indexedaddressThe address authorized as an operator.
tokenOwner indexedaddressThe owner of the tokenId.
tokenId indexedbytes32The tokenId operator address has access on behalf of tokenOwner.
operatorNotificationDatabytesThe data to notify the operator about via LSP1.

DataChanged

References
event DataChanged(bytes32 indexed dataKey, bytes dataValue);

The following data key/value pair has been changed in the ERC725Y storage: Data key: dataKey, data value: dataValue.

Emitted when data at a specific dataKey was changed to a new value dataValue.

Parameters

NameTypeDescription
dataKey indexedbytes32The data key for which a bytes value is set.
dataValuebytesThe value to set for the given data key.

OwnershipTransferred

References
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

Parameters

NameTypeDescription
previousOwner indexedaddress-
newOwner indexedaddress-

RevokedOperator

References
event RevokedOperator(address indexed operator, address indexed tokenOwner, bytes32 indexed tokenId, bool notified, bytes operatorNotificationData);

Emitted when tokenOwner disables operator to transfer or burn tokenId on its behalf.

Parameters

NameTypeDescription
operator indexedaddressThe address revoked from the operator array (getOperatorsOf).
tokenOwner indexedaddressThe owner of the tokenId.
tokenId indexedbytes32The tokenId operator is revoked from operating on.
notifiedboolBool indicating whether the operator has been notified or not
operatorNotificationDatabytesThe data to notify the operator about via LSP1.

Transfer

References
event Transfer(address operator, address indexed from, address indexed to, bytes32 indexed tokenId, bool force, bytes data);

Emitted when tokenId token is transferred from the from to the to address.

Parameters

NameTypeDescription
operatoraddressThe address of operator that sent the tokenId
from indexedaddressThe previous owner of the tokenId
to indexedaddressThe new owner of tokenId
tokenId indexedbytes32The tokenId that was transferred
forceboolIf the token transfer enforces the to recipient address to be a contract that implements the LSP1 standard or not.
databytesAny additional data the caller included by the caller during the transfer, and sent in the hooks to the from and to addresses.

Errors

ERC725Y_DataKeysValuesEmptyArray

References
error ERC725Y_DataKeysValuesEmptyArray();

Reverts when one of the array parameter provided to setDataBatch function is an empty array.


ERC725Y_DataKeysValuesLengthMismatch

References
error ERC725Y_DataKeysValuesLengthMismatch();

Reverts when there is not the same number of elements in the datakeys and dataValues array parameters provided when calling the setDataBatch function.


ERC725Y_MsgValueDisallowed

References
error ERC725Y_MsgValueDisallowed();

Reverts when sending value to the setData or setDataBatch function.


InvalidExtensionAddress

References
error InvalidExtensionAddress(bytes storedData);

reverts when the bytes retrieved from the LSP17 data key is not a valid address (not 20 bytes)

Parameters

NameTypeDescription
storedDatabytes-

InvalidFunctionSelector

References
error InvalidFunctionSelector(bytes data);

reverts when the contract is called with a function selector not valid (less than 4 bytes of data)

Parameters

NameTypeDescription
databytes-

LSP4TokenNameNotEditable

References
error LSP4TokenNameNotEditable();

Reverts when trying to edit the data key LSP4TokenName after the digital asset contract has been deployed. The LSP4TokenName data key is located inside the ERC725Y Data key-value store of the digital asset contract. It can be set only once inside the constructor/initializer when the digital asset contract is being deployed.


LSP4TokenSymbolNotEditable

References
error LSP4TokenSymbolNotEditable();

Reverts when trying to edit the data key LSP4TokenSymbol after the digital asset contract has been deployed. The LSP4TokenSymbol data key is located inside the ERC725Y Data key-value store of the digital asset contract. It can be set only once inside the constructor/initializer when the digital asset contract is being deployed.


LSP8CannotSendToAddressZero

References
error LSP8CannotSendToAddressZero();

Reverts when trying to send token to the zero address.


LSP8CannotSendToSelf

References
error LSP8CannotSendToSelf();

Reverts when specifying the same address for from and to in a token transfer.


LSP8CannotUseAddressZeroAsOperator

References
error LSP8CannotUseAddressZeroAsOperator();

Reverts when trying to set the zero address as an operator.


LSP8InvalidTransferBatch

References
error LSP8InvalidTransferBatch();

Reverts when the parameters used for transferBatch have different lengths.


LSP8NonExistentTokenId

References
error LSP8NonExistentTokenId(bytes32 tokenId);

Reverts when tokenId has not been minted.

Parameters

NameTypeDescription
tokenIdbytes32-

LSP8NonExistingOperator

References
error LSP8NonExistingOperator(address operator, bytes32 tokenId);

Reverts when operator is not an operator for the tokenId.

Parameters

NameTypeDescription
operatoraddress-
tokenIdbytes32-

LSP8NotTokenOperator

References
error LSP8NotTokenOperator(bytes32 tokenId, address caller);

Reverts when caller is not an allowed operator for tokenId.

Parameters

NameTypeDescription
tokenIdbytes32-
calleraddress-

LSP8NotTokenOwner

References
error LSP8NotTokenOwner(address tokenOwner, bytes32 tokenId, address caller);

Reverts when caller is not the tokenOwner of the tokenId.

Parameters

NameTypeDescription
tokenOwneraddress-
tokenIdbytes32-
calleraddress-

LSP8NotifyTokenReceiverContractMissingLSP1Interface

References
error LSP8NotifyTokenReceiverContractMissingLSP1Interface(
address tokenReceiver
);

Reverts if the tokenReceiver does not implement LSP1 when minting or transferring tokens with bool force set as false.

Parameters

NameTypeDescription
tokenReceiveraddress-

LSP8NotifyTokenReceiverIsEOA

References
error LSP8NotifyTokenReceiverIsEOA(address tokenReceiver);

Reverts if the tokenReceiver is an EOA when minting or transferring tokens with bool force set as false.

Parameters

NameTypeDescription
tokenReceiveraddress-

LSP8OperatorAlreadyAuthorized

References
error LSP8OperatorAlreadyAuthorized(address operator, bytes32 tokenId);

Reverts when operator is already authorized for the tokenId.

Parameters

NameTypeDescription
operatoraddress-
tokenIdbytes32-

LSP8TokenContractCannotHoldValue

References
error LSP8TokenContractCannotHoldValue();

LSP8 contract cannot receive native tokens.

Error occurs when sending native tokens to the LSP8 contract without sending any data. E.g. Sending value without passing a bytes4 function selector to call a LSP17 Extension.


LSP8TokenIdTypeNotEditable

References
error LSP8TokenIdTypeNotEditable();

Reverts when trying to edit the data key LSP8TokenIdType after the identifiable digital asset contract has been deployed. The LSP8TokenIdType data key is located inside the ERC725Y Data key-value store of the identifiable digital asset contract. It can be set only once inside the constructor/initializer when the identifiable digital asset contract is being deployed.


LSP8TokenOwnerCannotBeOperator

References
error LSP8TokenOwnerCannotBeOperator();

Reverts when trying to authorize or revoke the token's owner as an operator.


NoExtensionFoundForFunctionSelector

References
error NoExtensionFoundForFunctionSelector(bytes4 functionSelector);

reverts when there is no extension for the function selector being called with

Parameters

NameTypeDescription
functionSelectorbytes4-

OwnableCallerNotTheOwner

References
error OwnableCallerNotTheOwner(address callerAddress);

Reverts when only the owner is allowed to call the function.

Parameters

NameTypeDescription
callerAddressaddressThe address that tried to make the call.

OwnableCannotSetZeroAddressAsOwner

References
error OwnableCannotSetZeroAddressAsOwner();

Reverts when trying to set address(0) as the contract owner when deploying the contract, initializing it or transferring ownership of the contract.