Standards Track BIPs consist of two parts, a design document and a reference implementation. The BIP should be reviewed and accepted before a reference implementation is begun, unless a reference implementation will aid people in studying the BIP. Standards Track BIPs must include an implementation -- in the form of code, a patch, or a URL to same -- before it can be considered Final.

Once a BIP has been accepted, the reference implementation must be completed. When the reference implementation is complete and accepted by the community, the status will be changed to "Final".