> For the complete documentation index, see [llms.txt](https://sinqlarity.gitbook.io/sinqlarity-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sinqlarity.gitbook.io/sinqlarity-docs/contract-details/ownable.md).

# OWNABLE

### DESCRIPTION

The Ownable contract provides basic ownership functionality. It allows the owner to be set during contract deployment and provides a modifier onlyOwner to restrict access to certain functions only to the owner. The contract includes a currentOwner function to retrieve the address of the current owner. The owner can transfer ownership to a new address using the transferOwnership function. Additionally, the owner can renounce ownership using the renounceOwnership function, leaving the contract without an owner.

### FUNCTIONS

1. **currentOwner:** Returns the address of the current owner of the contract.
2. **transferOwnership:** Allows the current owner to transfer ownership of the contract to a new address. Requires the new owner's address as a parameter.
3. **renounceOwnership:** Allows the current owner to renounce ownership of the contract, making it ownerless.

### EXTRA PARAMETERS

**Contract level :** Easy

**Utility Tags:** Ownership, Access Control, Ownership Transfer

### USES

1. **Access Control:** The ownable contract can be inherited by other contracts to implement access control mechanisms, ensuring that only the designated owner can execute certain functions.
2. **Governance:** Contracts using the Ownable functionality can be utilized for decentralized governance, where ownership can be transferred to elected or voted addresses.
3. **Upgradeability:** Ownership functionality can be used in upgradeable contracts to transfer ownership to a new version of the contract.
4. **Contract Maintenance:** The ownable contract allows contract owners to perform maintenance tasks and update contract parameters securely.
5. **Smart Contracts:** Ownership functionality is commonly used in various smart contracts to manage permissions and control access to critical functions and resources.