Owner Two Step Renounce Facet

Renounce ownership and clear pending owner for two-step ERC-173 diamonds

Key Features

• renounceOwnership() clears owner and pending owner in one call.
• Owner-only function; otherwise reverts OwnerUnauthorizedAccount.
• Emits OwnershipTransferred to address(0).

Storage

State Variables

Property	Type	Description
OWNER_STORAGE_POSITION	bytes32	Owner storage position within the diamond (Value: keccak256("erc173.owner"))
PENDING_OWNER_STORAGE_POSITION	bytes32	Pending owner storage position within the diamond (Value: keccak256("erc173.owner.pending"))

OwnerStorage

Definition

/** storage-location erc8042:erc173.owner */
struct OwnerStorage {
  address owner;
}

---

PendingOwnerStorage

Definition

/** storage-location erc8042:erc173.owner.pending */
struct PendingOwnerStorage {
  address pendingOwner;
}

Functions

renounceOwnership

Requires msg.sender to equal the stored owner; otherwise reverts OwnerUnauthorizedAccount. Sets owner to address(0), sets pendingOwner to address(0), and emits OwnershipTransferred(previousOwner, address(0)). After success, owner-only checks that read this storage should no longer authorize any account.

function renounceOwnership() external;

Events

Emitted after a successful renounce with _newOwner == address(0).

Signature:

event OwnershipTransferred(address indexed _previousOwner, address indexed _newOwner);

Errors

Signature:

error OwnerUnauthorizedAccount();

Best Practices

• Only the current owner can renounce; there is no pending step for renounce itself, but clearing pendingOwner avoids leaving a nominated successor after you renounce

Security Considerations

Renouncing is immediate and irreversible on-chain: the owner becomes address(0) in the same transaction.

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Last updated:March 24, 2026