> For the complete documentation index, see [llms.txt](https://a3sprotocolcontact.gitbook.io/a3s-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://a3sprotocolcontact.gitbook.io/a3s-protocol/a3s-v1.0/what-is-a3s-v1.0.md).

# What is A3S V1.0?

A3S Protocol V1.0 gives addresses liquidity and integrability, enabling addresses to be securely traded, leased, and escrow. Also, it makes the address an on-chain infrastructure that can be transferred and priced.

Addresses under the A3S Protocol V1.0 standard have the following characteristics:

* #### Transferrable 

  The control right of the address is separated from the address itself, which can realize the complete transfer of the address.
* #### Composable 

  Transferable addresses remove limitations in numerous application scenarios, as infrastructure can be combined with different protocols.
* #### No private key  

  There is no private key in the generation process of transferable addresses, so there is no risk of private key leakage.
* **Applicable to existing NFT infrastructure**

  The control rights are separated out to NFTs, so that various existing NFT-based infrastructures can be applied to such addresses